JPH0580414B2 - - Google Patents
Info
- Publication number
- JPH0580414B2 JPH0580414B2 JP60042387A JP4238785A JPH0580414B2 JP H0580414 B2 JPH0580414 B2 JP H0580414B2 JP 60042387 A JP60042387 A JP 60042387A JP 4238785 A JP4238785 A JP 4238785A JP H0580414 B2 JPH0580414 B2 JP H0580414B2
- Authority
- JP
- Japan
- Prior art keywords
- particles
- spindle
- shaped
- magnetic
- iron oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002245 particle Substances 0.000 claims description 269
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 90
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 52
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 49
- 229910052598 goethite Inorganic materials 0.000 claims description 44
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 claims description 44
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 39
- 239000000843 powder Substances 0.000 claims description 35
- 238000009826 distribution Methods 0.000 claims description 29
- 239000007864 aqueous solution Substances 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 22
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 20
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 17
- 239000002243 precursor Substances 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 238000007254 oxidation reaction Methods 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 8
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical compound [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 claims description 7
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 claims description 7
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 7
- 239000012266 salt solution Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052595 hematite Inorganic materials 0.000 claims description 4
- 239000011019 hematite Substances 0.000 claims description 4
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 238000000576 coating method Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 14
- 230000005415 magnetization Effects 0.000 description 13
- 239000006249 magnetic particle Substances 0.000 description 9
- 238000000635 electron micrograph Methods 0.000 description 7
- 238000006722 reduction reaction Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 239000011790 ferrous sulphate Substances 0.000 description 6
- 235000003891 ferrous sulphate Nutrition 0.000 description 6
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 6
- 239000007858 starting material Substances 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000010941 cobalt Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 229910000015 iron(II) carbonate Inorganic materials 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000029052 metamorphosis Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 150000001868 cobalt Chemical class 0.000 description 3
- 229940044175 cobalt sulfate Drugs 0.000 description 3
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 3
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001493 electron microscopy Methods 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229960002089 ferrous chloride Drugs 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 235000019351 sodium silicates Nutrition 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Compounds Of Iron (AREA)
- Silicon Compounds (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Hard Magnetic Materials (AREA)
Description
ãç£æ¥äžã®å©çšåéã
æ¬çºæã¯ãç£æ°èšé²çšç£æ§é
žåéç²åç²æ«ãæ®
ã«ããªãžãããã€ã¹ã¯ããããããŒãã€ã¹ã¯ãã
ã€ãžã¿ã«èšé²çšç£æ§é žåéç²åç²æ«ãšããŠæé©ã§
ããç²åºŠãåæã§ãããæš¹æç¶ç²åãæ··åšããŠã
ãããäžã€ã軞æ¯ïŒé·è»žïŒç軞ïŒãå°ããïŒïŒïŒ
以äžãæ®ã«ïŒïŒïŒä»¥äžã§ãã€ãŠãããããé«ãä¿
ç£åãšä¿ç£åååžã®å°ãã玡éåãåãããã°ã
ã¿ã€ãç²ååã¯ãã°ããã€ãç²åãããªãç£æ§é ž
åéç²åç²æ«åã³ãã®è£œé æ³ã«é¢ãããã®ã§ã
ãã ãåŸæ¥æè¡ã è¿å¹Žãç£æ°èšé²åççšæ©åšã®é·æéèšé²åãå°
å軜éåãé²ãã«ã€ããŠããããç£æ°èšé²åççš
æ©åšãšç£æ°ããŒããç£æ°ãã€ã¹ã¯çã®ç£æ°èšé²åª
äœãšã®äž¡é¢ã«ãããŠé«æ§èœåãé«å¯åºŠèšé²åã®èŠ
æ±ãé«ãŸã€ãŠããŠããã ç£æ°èšé²åªäœã®é«æ§èœåãé«èšé²å¯åºŠåã®çºã«
ã¯ãåæ£æ§ãå å¡«æ§ãæ®çç£æå¯åºŠBrãä¿ç£å
Hcã®åäžåã³ä¿ç£åååžã®æ¹è¯ãããŒãè¡šé¢ã®
å¹³æ»æ§ã®åäžåã³å¡èã®èå±€åãå¿ èŠã§ããã ãã®äºå®ã¯ãäŸãã°ç·åæè¡ã»ã³ã¿ãŒçºè¡ãç£
æ§ææã®éçºãšç£ç²ã®é«åæ£åæè¡ãã®ç¬¬140é
ã®ãé«èšé²å¯åºŠåã¯ãâŠäžå®ã®åºåã確ä¿ããã
ãã«Brã倧ããããå¿ èŠããããBrã倧ããã
ãã«ã¯ãâŠç£æ§ç²ã®å å¡«çãé«ããªããã°ãªããª
ããããªãèšèŒãåè³æ第15é ã®ãç£æ°èšé²ã«ã
ããæ§èœãè¡šãéèŠãªææ°ã¯ãâŠèšé²å¯åºŠã§ã
ããâŠãã®åéã«ãããä»ãŸã§ã®æ¹è¯ã®æ¹åãèŠ
çŽãããšãâŠèšé²åªäœïŒèããã€é«ãæç£åïŒä¿
ç£åïŒïŒHcïŒã®ç£æ§å±€ãå®çŸããããšâŠããªãèš
èŒãåè³æ第141é ã®ãé«å¯åºŠèšé²ã®ããã«ãå¡
èã®èå±€åã¯ãã€ãšãéèŠãªå åã§ãããããªã
èšèŒããªãžãããã€ã¹ã¯ã®ãããªãããæµ®äžåã®
å Žåã«æŒããåè³æ第143é ã®ããããã®æµ®äžé
ã¯é«å¯åºŠèšé²ã®æ¯é èŠå ã§ãããâŠäœæµ®äžéåã
ãå Žåããã€ã¹ã¯ã®è¡šé¢æ§ãæªããšããããã®ã
ããã³ã°ã«ããåçåºåã®äœäžããå®å®æµ®äžãä¹±
ãããããã¯ã©ãã·ãŠãçºçãããããªãèšèŒå
ã³ãæ¥çµãšã¬ã¯ãããã¯ã¹ïŒâïŒå·ã第112é ã®
ãâŠHcã倧ãããŠããã®ååžã倧ãããšïŒ¢âæ²
ç·ã§è§åæ¯ïŒBrïŒBmïŒãæªããããŒãã§è¯ãåº
åãåºã«ãããããªãèšèŒããæããã§ããã ç£æ°èšé²åªäœã®ãããè«žç¹æ§ã¯ãç£æ°èšé²åªäœ
ã«äœ¿çšãããç£æ§é žåéç²åç²æ«ãšå¯æ¥ãªé¢ä¿ã
æã€ãŠãããç£æ§é žåéç²åç²æ«ã®ç¹æ§æ¹åã匷
ãæãŸããŠããã ä»ãç£æ°èšé²åªäœã®è«žç¹æ§ãšäœ¿çšãããç£æ§é ž
åéç²åç²æ«ã®ç¹æ§ãšã®é¢ä¿ã«ã€ããŠè©³è¿°ããã°
次ã®éãã§ããã å ããç£æ°èšé²åªäœã®æ®çç£æå¯åºŠBrã¯ãç£
æ§é žåéç²åç²æ«ã®ããŒã¯ã«äžã§ã®åæ£æ§ãå¡è
äžã§ã®é åæ§åã³å å¡«æ§ã«äŸåããŠããã ãããŠãããŒã¯ã«äžã§ã®åæ£æ§ãå¡èäžã§ã®é
åæ§åã³å å¡«æ§ãåäžãããããã«ã¯ãããŒã¯ã«
äžã«åæ£ãããç£æ§é žåéç²åç²æ«ã®ç²åºŠãåæ
ã§ãããæš¹æç¶ç²åãæ··åšããŠããªãããšãèŠæ±
ãããã 次ã«ãç£æ°èšé²åªäœã®è¡šé¢æ§ã®æ¹è¯ã®çºã«ã¯ã
åæ£æ§ãé åæ§ãè¯ããäžã€ãç²åãµã€ãºãå°ã
ãç£æ§é žåéç²åç²æ«ãè¯ãããã®ãããªç£æ§é ž
åéç²åç²æ«ãšããŠã¯ç²åºŠãåæã§ãããæš¹æç¶
ç²åãæ··åšããŠããªãããšãèŠæ±ãããã æŽã«ãç£æ°èšé²åªäœã®å¡èã®èå±€åã®çºã«ã¯ã
åæ£æ§ãé åæ§ãè¯ãç£æ§é žåéç²åç²æ«ãè¯
ãããã®ãããªç£æ§é žåéç²åç²æ«ãšããŠã¯ãå
è¿°ããããã«ãç²åºŠãåæã§ãããæš¹æç¶ç²åã
æ··åšããŠããªãããšãèŠæ±ãããã ç£æ°èšé²åªäœã®ä¿ç£åHcã¯ãåè¿°ããéãã
é«æ§èœåãé«èšé²å¯åºŠåã®ããã«ã¯ãåºæ¥ãã ã
é«ããäžã€ãä¿ç£åååžãå°ããããšãå¿ èŠã§ã
ãããã®çºã«ã¯ãããŒã¯ã«äžã«åæ£ãããç£æ§ç²
åç²æ«ã®ä¿ç£åHcãåºæ¥ãã ãé«ããäžã€ãä¿
ç£åååžãå°ããããšãå¿ èŠã§ããã äžæ¹ãç£æ°èšé²åççšæ©åšã«ãããé«èšé²å¯åºŠ
åã®æ¹è¯æ¹æ³ã®äžã€ã¯ãç£æ°ãããã®ã€ããå·Ÿã
çãããããšã§ããã ãã®äºå®ã¯ãååºè³æ第15é ã®ãç£æ°èšé²ã«ã
ããæ§èœãè¡šããéèŠãªææ°ã¯ãâŠèšé²å¯åºŠã§ã
ããâŠãã®åéã«ãããä»ãŸã§ã®æ¹è¯ã®æ¹åãèŠ
çŽãããšâŠç£æ°ãããïŒçãã®ã€ããå·Ÿãšçãã
ã©ãã¯å·ŸâŠããªãèšèŒããæããã§ããã è¿å¹Žãé«å¯åºŠèšé²åãç®çãšããŠãç£æ°ããã
ã®ã®ã€ããå·Ÿã¯ãçã çããªãæ¹åã«ããããç£
æ°ãããã®ã®ã€ããå·Ÿãçãããå Žåãç£å¿ã®ã®
ã€ããä»è¿ã®ç£çã¯ãé·ææåãšãšãã«åŒ·ãåçŽ
æåãå«ãŸããããã«ãªãããã®çºãããããšæ¥
觊ããŠããç£æ°èšé²åªäœã®è¡šé¢å±€ã§ã¯ãåªäœã«å¯Ÿ
ããŠåçŽãªæ¹åã®ç£æååžãèããå¢å ããã åŸã€ãŠãé«å¯åºŠèšé²åã®çºã«ã¯ç£æ°èšé²åªäœäž
ã§åªäœã«åçŽãªæ¹åã«ç£å容ææ¹åãæãããã
ãšã奜ãŸããã åŸæ¥äœ¿çšãããŠãã代衚çãªç£æ§ç²åç²æ«ã¯é
ç¶ã®ãã°ãã¿ã€ãç²ååã¯ãã°ããã€ãç²åç²æ«
ã§ããããã®å Žå圢ç¶ç°æ¹æ§ã«ããç£å容ææ¹å
ã¯éç¶ã®é·ææ¹åã§ããã®ã§ãéç¶é žåéç²åã
å¡èäžã§åçŽã«é åãããããäžæ¬¡å çã«ã©ã³ã
ã ã«é åãããŠåçŽæåãå¢å ãããæ¹ã奜ãŸã
ãã ãã®äºå®ã¯ãç¹éæ57â183626å·å ¬å ±ã®ããŸ
ããè¿å¹ŽåçŽç£åèšé²ãšããèãæ¹ãå°å ¥ããã
ç£æ°èšé²åªäœã®é¢ã«åçŽãªæ¹åã®æ®çç£åæåã
æå¹ã«äœ¿ããšããææ¡ãããããã®åçŽç£åèšé²
ã«ãããšäžã«å®çŸ©ããèšé²å¯åºŠãé«ããªããâŠã
ãªãèšèŒãåã³ãå¡åžåã®ç£æ§å±€ã§ãç£æ§é¢ã«å¹³
è¡ã§ãªãæããŸãã¯åçŽã®ç£åæåãå©çšâŠããª
ãèšèŒããæããã§ããã ç£æ§é žåéç²åç²æ«ãå¡èäžã§äžæ¬¡å çã«ã©ã³
ãã ã«é åãããåçŽæåãå¢å ãããçºã«ã¯ã
åè¿°ããéãç²åºŠãåæã§ãããæš¹æç¶ç²åãæ··
åšããŠããªãããšã«å ããŠãç£æ§é žåéç²åç²æ«
ã®ç²åãµã€ãºãå°ãããã軞æ¯ãåºæ¥ãã ãå°ã
ãïŒïŒïŒä»¥äžãæ®ã«ïŒïŒïŒä»¥äžã«ããããšãå³
ã¡ã圢ç¶çã«çæ¹çã«ããããšãæå¹ã§ããã ãã®äºå®ã¯ãååºç¹éæ57â183626å·å ¬å ±ã®
ãæ¬çºæã¯ãâŠç²åãµã€ãºã0.30Ό以äžãšå°ããã
ãã€âŠãã®çžŠïŒæšªæ¯ãïŒãè¶ãïŒä»¥äžãšããçã
圢ç¶ãšããããšã«ãããâŠå¡åžã也ç¥æã®åã¿æ¹
åã®å¡èã®æžåã«ããç»å é åãå¡åžæã®æµåã«
ããæµå»¶æ¹åãžã®é åãšãã€ãç²åãé¢å ã«æšªã
ãã€ãŠé åããããšããæ§åãæãããã€å¿ èŠãª
ãç©æ¥µçã«åçŽãªæ®çç£åã倧ããåããããã«
ããããšãç¹åŸŽãšããããªãèšèŒããæããã§ã
ãã çŸåšãç£æ°èšé²çšç£æ§ç²åç²æ«ãšããŠäž»ã«éç¶
æ¶ãã°ãã¿ã€ãç²åç²æ«ãŸãã¯ãéç¶æ¶ãã°ãã
ã€ãç²åç²æ«ãçšããããŠããããããã¯äžè¬
ã«ã第äžé塩氎溶液ãšã¢ã«ã«ãªãšãåå¿ãããŠåŸ
ãããæ°Žé žå第äžéç²åãå«ãPH11以äžã®ã³ãã€
ã氎溶液ã空æ°é žåãïŒéåžžãã湿åŒåå¿ããšåŒ
ã°ããŠãããïŒãŠåŸãããéç¶æ¶ã²ãŒã¿ã€ãç²å
ããæ°ŽçŽ çéå æ§ã¬ã¹äž300ã400âã§éå ããŠé
ç¶æ¶ãã°ãã¿ã€ãç²åãšãããŸãã¯æ¬¡ãã§ãã
ãã空æ°äž200ã300âã§é žåããŠéç¶æ¶ãã°ãã
ã€ãç²åãšããããšã«ããåŸãããŠããã äžè¿°ããããã«ãç²åºŠãåæã§æš¹æç¶ç²åãæ··
åšããŠãããã軞æ¯ïŒé·è»žïŒç軞ïŒãå°ããç£æ§
ç²åç²æ«ã¯ãçŸåšãæãèŠæ±ãããŠãããšããã§
ããããã®ãããªç¹æ§ãåããç£æ§ç²åç²æ«ãåŸ
ãããã«ã¯ãåºçºåæã§ããã²ãŒã¿ã€ãç²åç²æ«
ã®ç²åºŠã§åæã§æš¹æç¶ç²åãæ··åšããŠããããç²
åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãå°ããããšãå¿ èŠã§ã
ãã åŸæ¥ãPH11以äžã®ã¢ã«ã«ãªé åã§ã²ãŒã¿ã€ãç²
åã補é ããæ¹æ³ãšããŠæã代衚çãªå ¬ç¥æ¹æ³
ã¯ã第äžé塩氎溶液ã«åœé以äžã®ã¢ã«ã«ãªæº¶æ¶²ã
å ããŠåŸãããæ°Žé žå第äžéç²åãå«ã溶液ãPH
11以äžã«ãŠ80â以äžã®æž©åºŠã§é žååå¿ãè¡ãããš
ã«ãããã²ãŒã¿ã€ãç²åãåŸããã®ã§ããã ãšããã§ãåšç¥ã®ããšããç£æ§ç²åç²æ«ã®ä¿ç£
åã®å€§ããã¯ã圢ç¶ç°æ¹æ§ãçµæ¶ç°æ¹æ§ãæªç°æ¹
æ§åã³äº€æç°æ¹æ§ã®ãããããè¥ããã¯ãããã®
çžäºäœçšã«äŸåããŠãããçŸåšãç£æ°èšé²çšç£æ§
ç²åç²æ«ãšããŠäœ¿çšãããŠããéç¶æ¶ãã°ãã¿ã€
ãç²åç²æ«ãåã¯ãéç¶æ¶ãã°ããã€ãç²åç²æ«
ã¯ããã®åœ¢ç¶ã«ç±æ¥ããç°æ¹æ§ãå©çšããããšã«
ããæ¯èŒçé«ãä¿ç£åïŒ350ã450OeïŒãåŸãŠã
ãã ãã®ããã«ãæ¢ç¥ã®éç¶æ¶ãã°ãã¿ã€ãç²åç²
æ«åã¯ãéç¶æ¶ãã°ããã€ãç²åç²æ«ã¯ããã®åœ¢
ç¶ç°æ¹æ§ãå©çšããŠæ¯èŒçé«ãä¿ç£åãåŸããã®
ã§ãããããããç²åãCoã§å€æããããšã«ã
ãããã®çµæ¶ç°æ¹æ§ãå©çšããŠãæŽã«ãä¿ç£åã
åäžãããããšãäžè¬çã«ç¥ãããŠããããã®å Ž
åãCoã®æ·»å éãå¢å ããçšãä¿ç£åã¯é«ããª
ãããšãç¥ãããŠããã ãçºæã解決ããããšããåé¡ç¹ã ç²åºŠãåæã§æš¹æç¶ç²åãæ··åšããŠãããã軞
æ¯ïŒé·è»žïŒç軞ïŒãå°ããç£æ§ç²åç²æ«ã¯çŸåšã
æãèŠæ±ãããŠãããšããã§ããããåºçºåæã§
ããéç¶æ¶ã²ãŒã¿ã€ãç²åã補é ããåè¿°ã®å ¬ç¥
æ¹æ³ã«ããåŸãããç²åç²æ«ã¯ã軞æ¯ïŒé·è»žïŒç
軞ïŒã10ïŒïŒä»¥äžã®éç¶åœ¢æ ãåããç²åã§ã
ããæš¹æç¶ç²åãæ··åšããŠããããŸãç²åºŠããèš
ãã°ãåæãªç²åºŠãæããç²åã§ãããšã¯èšãé£
ãã ããã§ãæ¬çºæè ã¯ã第äžé氎塩溶液ãšçé žã¢
ã«ã«ãªãšãåå¿ãããŠåŸãããFeCO3ãå«ã氎溶
液ã«é žçŽ å«æã¬ã¹ãéæ°ããŠé žåããããšã«ãã
ã²ãŒã¿ã€ãç²åã補é ããæ¹æ³ïŒç¹éæ50â
80999å·å ¬å ±ïŒã«çç®ããã ãã®æ¹æ³ã«ããå Žåã«ã¯ãç²åºŠãåæã§ããã
æš¹æç¶ç²åãæ··åšããŠãããã玡éåãåããã²
ãŒã¿ã€ãç²åãããªãç²æ«ãåŸãããã ããããªããããã®æ¹æ³ã«ããåŸãããã²ãŒã¿
ã€ãç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒã¯ïŒïŒïŒç²åºŠã§ã
ããæŽã«ã軞æ¯ïŒé·è»žïŒç軞ïŒãå°ããããããš
ãèŠæ±ãããã äžæ¹ãç£æ§é žåéç²åç²æ«ã®è»žæ¯ïŒé·è»žïŒç
軞ïŒãå°ããããå Žåããããç£æ§é žåéç²åç²
æ«ã®ä¿ç£åã¯åœ¢ç¶ã«ç±æ¥ããç°æ¹æ§ãå©çšããã
ãšãã§ããªãçºã300OeçšåºŠä»¥äžãšãªã€ãŠããŸ
ãã ããã§ãåè¿°ããéããç£æ§é žåéç²åç²æ«ã
Coå€æããããšã«ãããä¿ç£åãé«ããããšã
ç¥ãããŠããã ããããªãããCoã§å€æããç£æ§é žåéç²å
ç²æ«ã¯ä¿ç£åååžã®åºããã倧ãããšããæ¬ ç¹ã
æããŠãããããã¯ãCoã§å€æããç£æ§é žåé
ç²åç²æ«ã埮èŠçã«èŠãå Žåãåã ã®ç²åéã«ã
ããŠCoå€æéãçžéããããšåã³ïŒåã®ç²åã®
ç²åè¡šé¢ã«ãããŠãCoã®çµææ¯ã«ã°ãã€ããç
ããŠããããšã«ãããã®ãšèããããŠããã ãåé¡ç¹ã解決ããçºã®æ段ã æ¬çºæè ã¯ãç²åºŠãåæã§æš¹æç¶ç²åãæ··åšã
ãŠãããã軞æ¯ïŒé·è»žïŒç軞ïŒãå°ããç£æ§é žå
éç²åç²æ«ãåŸãã¹ããçš®ã æ€èšãéããçµæã
第äžé塩氎溶液ãšçé žã¢ã«ã«ãªãšãåå¿ãããŠåŸ
ãããFeCO3ãå«ã氎溶液ã«é žçŽ å«æã¬ã¹ãéæ°
ããŠé žåããããšã«ãã玡éåãåããã²ãŒã¿ã€
ãç²åç²æ«ãçæãããã«ãããã第äžé塩氎溶
液ãåèšçé žã¢ã«ã«ãªåã³é žçŽ å«æã¬ã¹ãéæ°ã
ãŠé žååå¿ãè¡ãããåã®åèšFeCO3ãå«ã氎溶
液ã®ããããã«ãæ°Žå¯æº¶æ§ã±ã€é žå¡©ãFeã«å¯Ÿã
Siæç®ã§0.1ã20ååïŒ æ·»å ããå Žåã«ã¯ãåºçº
åæã§ãã玡éåãåããã²ãŒã¿ã€ãç²åã®è»žæ¯
ïŒé·è»žïŒç軞ïŒãçããïŒïŒïŒä»¥äžãæ®ã«ãïŒïŒ
ïŒä»¥äžã«ããããšãã§ãããšããç¥èŠãæ¢ã«åŸãŠ
ããïŒç¹é¡æ58â200621å·ãç¹é¡æ59â87011
å·ïŒã æŽã«ãæ¬çºæè ã¯ãç²åºŠãåæã§ãããæš¹æç¶
ç²åãæ··åšããŠããããäžã€ã軞æ¯ïŒé·è»žïŒç
軞ïŒãå°ãããïŒïŒïŒä»¥äžãæ®ã«ïŒïŒïŒä»¥äžã§ã
ã€ãŠãããããé«ãä¿ç£åãšä¿ç£åååžã®å°ãã
ç£æ§é žåéç²åç²æ«ãåŸãã¹ãçš®ã æ€èšãéãã
çµæãäžèšSiãå«æãã玡éåãåããã²ãŒã¿ã€
ãç²åãåºçºåæãšããŠéå ãåã¯éå ãé žåã
ãŠåŸãããSiãå«æãã玡éåãåããç£æ§é žå
éç²åç²æ«ãåé§äœãšããŠçšãCoã§å€æããå Ž
åã«ã¯ãé«ãä¿ç£åãæãããšåæã«ä¿ç£åååž
ãå°ãããã®ã§ãããšããå šãæ°èŠãªç¥èŠãåŸã
æ¬çºæãå®æãããã®ã§ããã å³ã¡ãæ¬çºæã¯ãSiãFeã«å¯Ÿã0.1ã20ååïŒ
å«æã軞æ¯ïŒé·è»žïŒç軞ïŒãïŒïŒïŒä»¥äžã§ãã€
ãŠãç²åè¡šé¢ãFeã«å¯Ÿã0.5ã15.0ååïŒ ã®Coã§
å€æãããŠãããäžã€ãä¿ç£åååžãS.F.D.ã§
1.5以äžã§ããããšãç¹åŸŽãšãã玡éåãåãã
ãã°ãã¿ã€ãç²åãããªãç£æ§é žåéç²åç²æ«ã
SiãFeã«å¯Ÿã0.87ã7.7ååïŒ å«æã軞æ¯ïŒé·
軞ïŒç軞ïŒã1.3ïŒïŒä»¥äžã§ãã€ãŠãç²åè¡šé¢ã
Feã«å¯Ÿã0.5ã15.0ååïŒ ã®Coã§å€æãããŠããã
äžã€ãä¿ç£åååžãS.F.D.ã§1.5以äžã§ããããš
ãç¹åŸŽãšãã玡éåãåãããã°ããã€ãç²åã
ããªãç£æ§é žåéç²åç²æ«åã³ç¬¬äžé塩氎溶液ãš
çé žã¢ã«ã«ãªãšãåå¿ãããŠåŸãããFeCO3ãå«
ã氎溶液ã«é žçŽ å«æã¬ã¹ãéæ°ããŠé žåããããš
ã«ãã玡éåãåããã²ãŒã¿ã€ãç²åãçæãã
ãã«ããããåèšç¬¬äžé塩氎溶液ãåèšçé žã¢ã«
ã«ãªåã³é žçŽ å«æã¬ã¹ãéæ°ããŠé žååå¿ãè¡ã
ããåã®åèšFeCO3ãå«ã氎溶液ã®ããããã«ã
æ°Žå¯æº¶æ§ã±ã€é žå¡©ãFeã«å¯ŸãSiæç®ã§0.1ã20å
åïŒ æ·»å ããŠããããšã«ãããSiãå«æãã玡é
åãåããã²ãŒã¿ã€ãç²åãçæããã該Siãå«
æãã玡éåãåããã²ãŒã¿ã€ãç²åè¥ããã¯ã
ããå ç±è±æ°ŽããSiãå«æãã玡éåãåããã
ãã¿ã€ãç²åãéå æ§ã¬ã¹äžã§å ç±éå ããŠåŸã
ãã玡éåãåãããã°ãã¿ã€ãç²åãåé§äœç²
åãšããŠçšãã該åé§äœç²åã®Feã«å¯Ÿã0.5ã
15.0ååïŒ ã®Coãå«ãããã«ãäžèšåé§äœç²åã
æ°Žé žåã³ãã«ãåã¯æ°Žé žåã³ãã«ããšæ°Žé žå第äž
éãå«ãã¢ã«ã«ãªæžæ¿æ¶²äžã«åæ£ããã該åæ£æ¶²
ãéé žåæ§é°å²æ°äžã50ã100âã®æž©åºŠç¯å²ã§å
ç±åŠçããããšã«ããCoåã¯CoãšFe2+ã§å€æã
ããSiãå«æãã玡éåãåãããã°ãã¿ã€ãç²
åãåŸãããšãããªã玡éåãåãããã°ãã¿ã€
ãç²åãããªãç£æ§é žåéç²åç²æ«ã®è£œé æ³ã§ã
ãã ãäœçšã å ããæ¬çºæã«ãããŠæãéèŠãªç¹ã¯ãé«ãä¿
ç£åãšä¿ç£åååžãå°ããCoã§å€æããã玡é
åãåããç£æ§é žåéç²åç²æ«ã補é ããã«åœã
ããCoå€æã®çºã®åé§äœãšããŠç²åºŠãåæã§æš¹
æç¶ç²åãæ··åšããŠãããã軞æ¯ïŒé·è»žïŒç軞ïŒ
ãå°ããSiãå«æãã玡éåãåããç£æ§é žåé
ç²åç²æ«ãçšããç¹ã§ããã æ¬çºæã«ä¿ãç£æ§é žåéç²åç²æ«ã¯ãäœæ ãä¿
ç£åååžãå°ãããã®ã§ãããã¯æªã æããã§ã¯
ãªãããæ¬çºæè ã¯ãæ¬çºæã«ä¿ãåé§äœã§ãã
Siãå«æãã玡éåãåãããã°ãã¿ã€ãç²åå
ã¯ãã°ããã€ãç²åãåºçºåæã§ããã²ãŒã¿ã€ã
ç²åã®è£œé æ³ã«èµ·å ããŠç²åºŠãèããåæã§ãã
çºãåã ã®ç²åéã«ãããCoå€æéã®ã°ãã€ã
ãå°ããçºã§ããããšèããŠããã ä»ãæ¬çºæè ãè¡ã€ãæ°å€ãã®å®éšäŸãããã
ã®äžéšãæœåºããŠèª¬æããã°ã次ã®éãã§ããã å³ïŒã¯ãæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»å éãšSiãå«æ
ãã玡éåãåããã²ãŒã¿ã€ãç²åã®è»žæ¯ãšã®é¢
ä¿å³ã§ããã å³ã¡ãFe2+1.0molïŒãå«ãç¡«é žç¬¬äžé氎溶
液3.0ããããããããåå¿åšäžã«æºåããã
ã±ã€é žãœãŒããFeã«å¯ŸãSiæç®ã§ïŒã20ååïŒ
æ·»å ããŠåŸãããçé žãœãŒã氎溶液2.0ã«å ãã
PHçŽ10ã«ãããŠFeCO3ãå«ãæžæ¿æ¶²ãåŸã該æžæ¿
液ã«æž©åºŠ50âã«ãããŠæ¯å15ã®ç©ºæ°ãéæ°ããŠ
é žååå¿ãè¡ãããããšã«ããåŸãããSiãå«æ
ãã玡éåãåããã²ãŒã¿ã€ãç²åã®è»žæ¯ïŒé·
軞ïŒç軞ïŒãšæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»å éãšã®é¢ä¿
ã瀺ãããã®ã§ããã å³ïŒããæãããªéããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»
å éã®å¢å ã«äŒŽã€ãŠè»žæ¯ïŒé·è»žïŒç軞ïŒãçããª
ãåŸåã«ããã å³ïŒåã³å³ïŒã¯ããããããæ°Žå¯æº¶æ§ã±ã€é žå¡©
ã®æ·»å éãšSiãå«æãã玡éåãåããç£æ§é žå
éç²åç²æ«ã®è»žæ¯ãšã®é¢ä¿å³ã§ãããå³ïŒããã°
ãã¿ã€ãç²åç²æ«ã®å Žåãå³ïŒããã°ããã€ãç²
åç²æ«ã®å Žåã§ããã å³ã¡ãå³ïŒã¯å³ïŒã®å Žåãšåæ§ã«ããŠåŸããã
Siãå«æãã玡éåãåããã²ãŒã¿ã€ãç²åç²æ«
200ïœã400âã§45åéå ç±éå ããããšã«ããåŸ
ãããSiãå«æãã玡éåãåãããã°ãã¿ã€ã
ç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãšæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®
æ·»å éãšã®é¢ä¿ã瀺ãããã®ã§ããã å³ïŒããæãããªéããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»
å éã®å¢å ã«äŒŽã€ãŠçŽ¡éåãåãããã°ãã¿ã€ã
ç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãå°ãããªãåŸåã«ã
ãã æ°Žå¯æº¶æ§ã±ã€é žå¡©ãFeã«å¯ŸãSiæç®ã§0.1åå
ïŒ ä»¥äžæ·»å ããå Žåã«ã¯ãåŸããã玡éåãåã
ããã°ãã¿ã€ãç²åã®è»žæ¯ãïŒïŒïŒä»¥äžã«ããã
ãšãã§ãã0.3ååïŒ ä»¥äžæ·»å ããå Žåã«ã¯ãåŸ
ããã玡éåãåãããã°ãã¿ã€ãç²åã®è»žæ¯ã
ïŒïŒïŒä»¥äžã«ããããšãã§ããã å³ïŒã¯ãå³ïŒã§åŸãããSiãå«æãã玡éåã
åãããã°ãã¿ã€ãç²åç²æ«150ïœã空æ°äžã§15
åéé žåããããšã«ããåŸãããSiãå«æãã玡
éåãåãããã°ããã€ãç²åã®è»žæ¯ïŒé·è»žïŒç
軞ïŒãšæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»å éãšã®é¢ä¿ã瀺ã
ããã®ã§ããã å³ïŒããæãããªéããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»
å éã®å¢å ã«äŒŽã€ãŠSiãå«æãã玡éåãåãã
ãã°ããã€ãç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãå°ãã
ãªãåŸåã«ããã æ°Žå¯æº¶æ§ã±ã€é žå¡©ã¯Feã«å¯ŸãSiæç®ã§0.1åå
ïŒ ä»¥äžæ·»å ããå Žåã«ã¯ãåŸããã玡éåãåã
ããã°ããã€ãç²åã®è»žæ¯ãïŒïŒïŒä»¥äžã«ããã
ãšãã§ãã0.87ååïŒ ä»¥äžæ·»å ããå Žåã«ã¯ãåŸ
ããã玡éåãåãããã°ããã€ãç²åã®è»žæ¯ã
1.31以äžã«ããããšãã§ããã å³ïŒã¯ãå³ïŒã§åŸãããSiãå«æãã玡éåã
åãããã°ããã€ãç²åãFeã«å¯Ÿã4.0ååïŒ ã®
Coã§å€æããããšã«ããåŸãããCoã§å€æãã
ã玡éåãåãããã°ããã€ãç²åã®S.F.D.ãšSi
å«æéãšã®é¢ä¿ã瀺ãããã®ã§ããã å³ïŒããæãããªéããSiå«æéã®å¢å ã«äŒŽã€
ãŠS.F.D.ã¯å°ãããªã€ãŠãããSiå«æéãå¢å ã
ãçšä¿ç£åååžãå°ãããªãããšããããã å°ãããã§ãS.F.D.ïŒSwitching Field Distrib
utionïŒãšã¯ãç£æ§é žåéç²åç²æ«ã®ãã¹ããªã·
ã¹âã«ãŒãïŒHysteresisâLoopïŒã®ç¬¬ïŒè±¡é
ïŒåã¯ç¬¬ïŒè±¡éïŒããä¿ç£åã®åŸ®åæ²ç·ãæ±ãã
ãã®åŸ®åæ²ç·ã®å䟡巟ã埮åæ²ç·ã®ããŒã¯å€ã®ä¿
ç£åã§é€ããå€ãèšãããã®å€ãå°ããçšãä¿ç£
åååžãå°ããã ç£æ§å¡èã«ãããä¿ç£åååžã¯ã䜿çšããCo
ã§å€æãããç£æ§é žåéç²åç²æ«ã®ä¿ç£åååžã«
ãã€ãŠå·Šå³ããããã®ã§ãããä¿ç£åååžã®å°ã
ãCoã§å€æãããç£æ§é žåéç²åç²æ«ãçšããŠ
補é ããç£æ§å¡èã®ä¿ç£åååžã¯å°ãããªããç£
æ§å¡èã®S.F.D.ãäžèšç£æ§é žåéç²åç²æ«ã®å Žå
ãšåæ§ã«ããŠæ±ããããšãã§ããã 次ã«ãæ¬çºæå®æœã«ããã€ãŠè«žæ¡ä»¶ã«ã€ããŠè¿°
ã¹ãã æ¬çºæã«ãããŠäœ¿çšããã第äžé塩氎溶液ãšã
ãŠã¯ãç¡«é žç¬¬äžé氎溶液ãå¡©å第äžé氎溶液çã
ããã æ¬çºæã«ãããŠäœ¿çšãããçé žã¢ã«ã«ãªãšããŠ
ã¯ãçé žãããªãŠã ãçé žã«ãªãŠã ãçé žã¢ã³ã¢
ããŠã ãåç¬ã§ãåã¯ãããããšçé žæ°ŽçŽ ãããª
ãŠã ãçé žæ°ŽçŽ ã«ãªãŠã ãçé žæ°ŽçŽ ã¢ã³ã¢ããŠã
çã®çé žæ°ŽçŽ ã¢ã«ã«ãªãšã䜵çšããŠäœ¿çšããããš
ãã§ããã æ¬çºæã«ãããåå¿æž©åºŠã¯ã40ã80âã§ããã 40âæªæºã§ããå Žåã«ã¯ã玡éåãåããã²ãŒ
ã¿ã€ãç²åãåŸãããšãã§ããªãã 80âãè¶ããå Žåã«ã¯ãç²ç¶Fe3O4ãæ··åšããŠ
ããã æ¬çºæã«ãããPHã¯ãïŒã11ã§ããã ïŒæªæºãåã¯11ãè¶ããå Žåã«ã¯ã玡éåãå
ããã²ãŒã¿ã€ãç²åãåŸãããšãã§ããªãã æ¬çºæã«ãããé žåæ段ã¯ãé žçŽ å«æã¬ã¹ïŒäŸ
ãã°ç©ºæ°ïŒã液äžã«éæ°ããããšã«ããè¡ãã æ¬çºæã«ãããŠäœ¿çšãããæ°Žå¯æº¶æ§ã±ã€é žå¡©ãš
ããŠã¯ããããªãŠã ãã«ãªãŠã ã®ã±ã€é žå¡©ãã
ãã æ¬çºæã«ãããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã¯ãçæãã
玡éåãåããã²ãŒã¿ã€ãç²åã®è»žæ¯ïŒé·è»žïŒç
軞ïŒã«é¢äžãããã®ã§ãããåŸã€ãŠã玡éåãå
ããã²ãŒã¿ã€ãç²åã®çæåå¿ãéå§ãããåã«
ååšãããŠããããšãå¿ èŠã§ããã第äžé塩氎溶
液ãçé žã¢ã«ã«ãªåã³é žçŽ å«æã¬ã¹ãéæ°ããŠé ž
ååå¿ãè¡ãããåã®FeCO3ãå«ã氎溶液ã®ãã
ããã«æ·»å ããããšãã§ããã æ¬çºæã«ãããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»å éã¯ã
Feã«å¯ŸããŠSiæç®ã§0.1ã20ååïŒ ã§ããã 0.1ååïŒ æªæºã§ããå Žåã«ã¯ã玡éåãåã
ããã°ãã¿ã€ãç²ååã¯ãã°ããã€ãç²åã®è»žæ¯
ïŒé·è»žïŒç軞ïŒãçããããšããå¹æãååéæ
ããããšãã§ããªãã 20ååïŒ ãè¶ããå Žåã«ã¯ãçæãã玡éåã
åããã²ãŒã¿ã€ãç²åãããªãç²æ«ãéå ãå
ã¯ãæŽã«é žåããããšã«ããåŸãããç£æ§é žåé
ç²åç²æ«ã®é£œåç£åãäœäžããçºå¥œãŸãããªãã 玡éåãåãããã°ãã¿ã€ãç²ååã¯ãã°ãã
ã€ãç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒåã³é£œåç£åãè
æ ®ããå Žåã0.3ã15ååïŒ ã奜ãŸããã æ·»å ããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã¯ãã»ãŒå šéãçæ
ã²ãŒã¿ã€ãç²åç²æ«äžã«å«æãããåŸåºã®è¡šïŒã«
瀺ãããéããåŸãããã²ãŒã¿ã€ãç²åç²æ«ã¯æ·»
å éãšã»ãŒåéã®Feã«å¯ŸãSiæç®ã§0.14ã11.01
ååïŒ ãå«æããŠããã該ç²åãå ç±éå ããŠåŸ
ããããã°ãã¿ã€ãç²åããŸããåŸåºã®è¡šïŒã«ç€º
ãããéããæ·»å éãšã»ãŒåéã®Feã«å¯ŸãSiæ
ç®ã§0.13ã10.99ååïŒ ãå«æããŠãããåèšã
ã°ãã¿ã€ãç²åãæŽã«é žåããŠåŸããããã°ãã
ã€ãç²åããŸããåŸåºã®è¡šïŒã«ç€ºãããéããæ·»
å éãšã»ãŒåéã®Feã«å¯ŸãSiæç®ã§0.98ã10.99
ååïŒ ãå«æããŠããã æ¬çºæã«ãããç£æ§é žåéç²åç²æ«ã®Coå€æ
ã¯ãåžžæ³ã«ããè¡ãããšãã§ããäŸãã°ãç¹å ¬æ
52â24237å·å ¬å ±ãç¹å ¬æ52â24238å·å ¬å ±ãç¹å ¬
æ52â36751å·å ¬å ±åã³ç¹å ¬æ52â36863å·å ¬å ±ã«
èšèŒãããŠããããã«ãåé§äœç²åãæ°Žé žåã³ã
ã«ãåã¯ãæ°Žé žåã³ãã«ããšæ°Žé žå第äžéãå«ã
ã¢ã«ã«ãªæžæ¿æ¶²äžã«åæ£ããã該åæ£æ¶²ãéé žå
æ§é°å²æ°äžã50ã100âã®æž©åºŠç¯å²ã§å ç±åŠçã
ãããšã«ããè¡ãããã æ¬çºæã«ãããæ°Žé žåã³ãã«ãã¯ãç¡«é žã³ãã«
ããå¡©åã³ãã«ãçã®æ°Žå¯æº¶æ§ã³ãã«ãå¡©ãšæ°Žé ž
åãããªãŠã ãæ°Žé žåã«ãªãŠã çã®æ°Žé žåã¢ã«ã«
ãªæ°Žæº¶æ¶²ãçšããããšã«ããåŸãããã æ¬çºæã«ãããæ°Žé žå第äžéã¯ãç¡«é žç¬¬äžéã
å¡©å第äžéçã®æ°Žå¯æº¶æ§ç¬¬äžéå¡©ãšæ°Žé žåãããª
ãŠã ãæ°Žé žåã«ãªãŠã çã®æ°Žé žåã¢ã«ã«ãªæ°Žæº¶æ¶²
ãçšããããšã«ããåŸãããã æ¬çºæã«ãããCoå€æã®æž©åºŠã¯ãåŠçæéã«
é¢äžãããã®ã§ããã枩床ã50â以äžãšããã°ã
Coåã¯CoãšFe2+ã§å€æããããã°ãã¿ã€ãç²å
åã¯ãã°ããã€ãç²åãçæãé£ããçæãããš
ããŠã極ããŠé·æéã®åŠçãå¿ èŠãšããã æ¬çºæã«ãããŠCoå€æãéé žåæ§é°å²æ°äžã§
è¡ãã®ã¯ãã³ãã«ãåã³ç¬¬äžéãæ°Žé žåç©ã®æå
ããŠå€æãçèµ·ããããã§ãããåæ£æ¶²äžã®æ°Žé ž
åã³ãã«ãåã³æ°Žé žå第äžéã®é žåãé²æ¢ããã
ãã§ããã æ¬çºæã«ãããæ°Žå¯æº¶æ§ã³ãã«ãå¡©ã®å€æé
ã¯ãFeã«å¯ŸãCoæç®ã§0.5ã15.0ååïŒ ã§ããã
0.5ååïŒ æªæºã§ããå Žåã«ã¯ãåŸããã玡éå
ãåãããã°ãã¿ã€ãç²ååã¯ãã°ããã€ãç²å
ã®ä¿ç£åãåäžããããšããå¹æãååéæãã
ããšãã§ããªãã15.0ååïŒ ãè¶ããå Žåã«ã¯ã
åŸããã玡éåãåãããã°ãã¿ã€ãç²ååã¯ã
ã°ããã€ãç²åã®ä¿ç£åååžãå°ãããããšãã
å¹æãååã§ã¯ãªãã æ·»å ããæ°Žå¯æº¶æ§ã³ãã«ãå¡©ã¯ãã»ãŒå šéãç£
æ§é žåéç²åã®ç²åè¡šé¢ã«ãããå€æã®çºã«å©çš
ãããã 玡éåãåãããã°ãã¿ã€ãç²ååã¯ãã°ãã
ã€ãç²åã®ä¿ç£ååã³ä¿ç£åååžãèæ ®ããå Ž
åã2.0ã13.0ååïŒ ã奜ãŸããã æ¬çºæã«ãããå ç±éå 枩床ã¯ãåžžæ³ã«ãã
300ã500âã§è¡ãããšãã§ããã 300âæªæºã§ããå Žåã¯ãéå åå¿ã®é²è¡ãé
ããé·æéãèŠããããŸãã500âãè¶ããå Žå
ã«ã¯ãéå åå¿ãæ¥æ¿ã«é²è¡ããŠç²å圢æ ã®å€åœ¢
ãšãç²ååã³ç²åçžäºéã®çŒçµãåŒãèµ·ãããŠã
ãŸãã ãå®æœäŸã 次ã«ãå®æœäŸäžŠã³ã«æ¯èŒäŸã«ãããæ¬çºæã説
æããã å°ãååºã®å®éšäŸåã³ä»¥äžã®å®æœäŸäžŠã³ã«æ¯èŒ
äŸã«ãããç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãé·è»žã¯ã
ããããé»åé¡åŸ®é¡åçãã枬å®ããæ°å€ã®å¹³å
å€ã§ç€ºããã ç²åäžã®Siåã³CoãZn䞊ã³ã«Niéã¯ããè¢å
ç·åæè£ çœ®3063MåãïŒçåŠé»æ©å·¥æ¥è£œïŒã䜿
çšããJIS K0119ã®ãããå ç·åæéåãã«åŸ
ã€ãŠãããå ç·åæãè¡ãããšã«ãã枬å®ã
ãã ç£æ§é žåéç²åç²æ«äžŠã³ã«ç£æ§å¡èã®ç£æ°ç¹æ§
ã¯ãæ¯åè©Šæåç£åèšVSM âïŒåïŒæ±è±å·¥æ¥
補ïŒã䜿çšãã枬å®ç£å Žã¯ãç£æ§ç²æ«ã®å Žå
5KOeãç£æ§å¡èã®å Žå10KOeã§æž¬å®ããã S.F.D.ã®æž¬å®ã¯ãåèšç£æ°æž¬å®åšã®åŸ®ååè·¯ã
䜿çšããŠãHcã®åŸ®åæ²ç·ãåŸããã®æ²ç·ã®å䟡
å·Ÿã枬å®ãããã®å€ãæ²ç·ã®ããŒã¯å€ã®Hcã§é€
ããããšã«ããæ±ããã ïŒçŽ¡éåãåããã²ãŒã¿ã€ãç²åç²æ«ã®çæïŒ å®æœäŸïŒã12ãæ¯èŒäŸïŒ å®æœäŸ ïŒ Fe2+1.0molïŒãå«ãç¡«é žç¬¬äžé氎溶液30
ããããããããåå¿åšäžã«æºåãããFeã«å¯Ÿ
ãSiæç®ã§0.15ååïŒ ãå«ãããã«ã±ã€é žãœãŒã
ïŒïŒå·ïŒïŒSiO228.55wtïŒ ïŒ9.5ïœãæ·»å ããŠåŸãã
ã3.53molïŒã®Na2CO3氎溶液20ã«å ããPH
9.9ã枩床50âã«ãããŠSiãå«æããFeCO3ã®ç
æãè¡ã€ãã äžèšSiãå«æããFeCO3ãå«ã氎溶液ã«æž©åºŠ50
âã«ãããŠãæ¯å130ã®ç©ºæ°ã6.5æééæ°ããŠ
Siãå«æããã²ãŒã¿ã€ãç²åãçæããã é žååå¿çµç¹ã¯ãåå¿æ¶²ã®äžéšãæãåãå¡©é ž
é žæ§ã«èª¿ç¯ããåŸãèµ€è¡å¡©æº¶æ¶²ãçšããŠFe2+ã®
éè²åè²åå¿ã®æç¡ã§å€å®ããã çæç²åã¯ãåžžæ³ã«ãããå¥ãæ°ŽæŽã也ç¥ã
ç²ç ããã ãã®Siãå«æããã²ãŒã¿ã€ãç²åç²æ«ã¯ãå³ïŒ
ã«ç€ºãé»åé¡åŸ®é¡åçïŒÃ20000ïŒããæãããª
éããå¹³åå€ã§é·è»ž0.43ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒ
ïŒïŒïŒã®çŽ¡éåãåããç²åãããªããç²åãå
æã§æš¹æç¶ç²åãæ··åšããªããã®ã§ãã€ãã ãŸãããã®çŽ¡éåãåããã²ãŒã¿ã€ãç²åç²æ«
ã¯ãè¢å ç·åæã®çµæãFeã«å¯ŸãSiã0.14åå
ïŒ å«æããŠããã å®æœäŸ ïŒã12 Fe2+氎溶液ã®çš®é¡ãçé žã¢ã«ã«ãªã®çš®é¡äžŠã³
ã«æ¿åºŠãæ°Žå¯æº¶æ§ã®ã±ã€é žå¡©ã®çš®é¡ãæ·»å é䞊ã³
ã«æ·»å ææãéå±ã€ãªã³ã®çš®é¡äžŠã³ã«éåã³æž©åºŠ
ãçš®ã å€åããã以å€ã¯ãå®æœäŸïŒãšåæ§ã«ããŠ
玡éåãåããã²ãŒã¿ã€ãç²åãçæããã ãã®æã®äž»èŠè£œé æ¡ä»¶åã³çæã²ãŒã¿ã€ãç²å
ç²æ«ã®ç¹æ§ãè¡šã«ç€ºãã å®æœäŸïŒåã³å®æœäŸïŒã§åŸããã玡éåãåã
ãã²ãŒã¿ã€ãç²åç²æ«ã®é»åé¡åŸ®é¡åçïŒÃ
20000ïŒãããããå³ïŒåã³å³ïŒã«ç€ºãã æ¯èŒäŸ ïŒ ã±ã€é žãœãŒããæ·»å ããªã以å€ã¯ãå®æœäŸïŒãš
åæ§ã«ããŠã²ãŒã¿ã€ãç²åç²æ«ãçæããã åŸãããã²ãŒã¿ã€ãç²åç²æ«ã¯ãå³ïŒã«ç€ºãé»
åé¡åŸ®é¡åçïŒÃ20000ïŒããæãããªéããå¹³
åå€ã§é·è»ž0.55ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒïŒïŒïŒ
ã§ãã€ãã ïŒçŽ¡éåãåããããã¿ã€ãç²åç²æ«ã®è£œé ïŒ å®æœäŸ 13 å®æœäŸïŒã§åŸãããSiãå«æãã玡éåãåã
ãã²ãŒã¿ã€ãç²åç²æ«1000ïœã空æ°äž300âã§å
ç±è±æ°ŽããŠSiãå«æãã玡éåãåããããã¿ã€
ãç²åç²æ«ãåŸãã ãã®ç²åã¯ãé»åé¡åŸ®é¡èŠ³å¯ã®çµæãå¹³åå€ã§
é·è»ž0.21ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒ1.8ïŒïŒã§ã
ããç²åºŠãåæã§æš¹æç¶ç²åãæ··åšããªããã®ã§
ãã€ãã ãŸããè¢å ç·åæã®çµæãFeã«å¯ŸãSiã0.35
ååïŒ å«æãããã®ã§ãã€ãã ïŒçŽ¡éåãåãããã°ãã¿ã€ãç²åç²æ«ã®è£œé ïŒ å®æœäŸ14ã26ãæ¯èŒäŸïŒ å®æœäŸ 14 å®æœäŸïŒã§åŸãããSiãå«æãã玡éåãåã
ãã²ãŒã¿ã€ãç²åç²æ«1000ïœã10ã®ã¬ãã«ãé
å 容åšäžã«æå ¥ããé§åå転ãããªããH2ã¬ã¹
ãæ¯åïŒã®å²åã§éæ°ããéå 枩床400âã§é
å ããŠSiãå«æãã玡éåãåãããã°ãã¿ã€ã
ç²åç²æ«ãåŸãã åŸãããSiãå«æãã玡éåãåãããã°ãã¿
ã€ãç²åç²æ«ã¯ãè¢å ç·åæã®çµæãFeã«å¯Ÿ
ãSiã0.13ååïŒ å«æããŠãããé»åé¡åŸ®é¡èŠ³å¯
ã®çµæãå¹³åå€ã§é·è»ž0.30ÎŒïœã軞æ¯ïŒé·è»žïŒç
軞ïŒ2.7ïŒïŒã§ãã€ãŠãç²åºŠãåæã§ãããæš¹æ
ç¶ç²åãæ··åšããªããã®ã§ãã€ãã ãŸããç£æ°æž¬å®ã®çµæãä¿ç£åHcã¯296Oeã
飜åç£åÏsã¯ã83.6emuïŒïœã§ãã€ãã å®æœäŸ15ã26ãæ¯èŒäŸïŒ åºçºåæã®çš®é¡ãéå 枩床ãçš®ã å€åããã以
å€ã¯å®æœäŸ14ãšåæ§ã«ããŠçŽ¡éåãåãããã°ã
ã¿ã€ãç²åç²æ«ãåŸãããã®æã®äž»èŠè£œé æ¡ä»¶å
ã³ç²åç²æ«ã®ç¹æ§ãè¡šïŒã«ç€ºãã å®æœäŸ15ã26ã§åŸããã玡éåãåãããã°ã
ã¿ã€ãç²åç²æ«ãããããé»åé¡åŸ®é¡èŠ³å¯ã®çµ
æãç²åºŠãåæã§ãããæš¹æç¶ç²åãæ··åšããªã
ãã®ã§ãã€ãã ïŒçŽ¡éåãåãããã°ããã€ãç²åç²æ«ã®è£œé ïŒ å®æœäŸ27ã36ãæ¯èŒäŸïŒ å®æœäŸ 27 å®æœäŸ16ã§åŸãããSiãå«æãã玡éåãåã
ããã°ãã¿ã€ãç²åç²æ«350ïœã空æ°äž300âã§60
åéé žåããŠSiãå«æãã玡éåãåãããã°ã
ãã€ãç²åç²æ«ãåŸãã åŸãããSiãå«æãã玡éåãåãããã°ãã
ã€ãç²åç²æ«ã¯ãè¢å ç·åæã®çµæãFeã«å¯Ÿ
ãSiã0.99ååïŒ ãå«æããŠãããé»åé¡åŸ®é¡èŠ³
å¯ã®çµæãé·è»ž0.20ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒ
1.3ïŒïŒã§ãã€ãŠãç²åºŠãåæã§ãããæš¹æç¶ç²
åãæ··åšããªããã®ã§ãã€ãããŸããç£æ°æž¬å®ã®
çµæãä¿ç£åHcã¯224Oeã飜åç£åÏsã¯ã
72.7emuïŒïœã§ãã€ãã å®æœäŸ28ã36ãæ¯èŒäŸïŒ 玡éåãåãããã°ãã¿ã€ãç²åç²æ«ã®çš®é¡ã
çš®ã å€åããã以å€ã¯ãå®æœäŸ27ãšåæ§ã«ããŠçŽ¡
éåãåãããã°ããã€ãç²åç²æ«ãåŸãã ãã®æã®äž»èŠè£œé æ¡ä»¶åã³ç²åç²æ«ã®ç¹æ§ãè¡š
ïŒã«ç€ºãã å®æœäŸ28ã36ã§åŸãããSiãå«æãã玡éåã
åãããã°ããã€ãç²åç²æ«ã¯ããããé»åé¡åŸ®
é¡èŠ³å¯ã®çµæãç²åºŠãåæã§ãããæš¹æç¶ç²åã
æ··åšããªããã®ã§ãã€ãã ïŒCoã§å€æããã玡éåãåãããã°ãã¿ã€ã
ç²åç²æ«ã®è£œé ïŒ å®æœäŸ37ã43ãæ¯èŒäŸïŒ å®æœäŸ 37 å®æœäŸ18ã§åŸãããSiãå«æããŠãã玡éåã
åãããã°ãã¿ã€ãç²åç²æ«100ïœãå¯åçã«ç©º
æ°ã®æ··å ¥ãé²æ¢ããªããç¡«é žã³ãã«ããšç¡«é žç¬¬äž
éãçšããã³ãã«ã0.085molãšç¬¬äžé0.179mol
ã溶åããŠãã1.0ã®æ°Žäžã«æå ¥ã埮现ãªã¹ã©
ãªãŒã«ãªããŸã§åæ£ããã次ãã§è©²åæ£æ¶²ã«18â
ã®NaOH氎溶液102mlã泚å ããæŽã«æ°Žãå ã
ãŠå šå®¹ã1.3ãšããŠOHåºæ¿åºŠ1.0molïŒã®åæ£
液ãšããã該åæ£æ¶²ã®æž©åºŠã100âã«ææž©ããã
ã®æž©åºŠã§æ¹æããªããïŒæéåŸã«ã¹ã©ãªãŒãåã
åºããæ°ŽæŽãéãã60âã§ä¹Ÿç¥ããŠãCoã§å€
æãããSiãå«æããŠãã玡éåãåãããã°ã
ã¿ã€ãç²åãåŸãã åŸãããç²åã¯ãé»åé¡åŸ®é¡èŠ³å¯ã®çµæãåé§
äœã§ããSiãå«æããŠãã玡éåãåãããã°ã
ã¿ã€ãç²åã®åœ¢ç¶ãç²åºŠãç¶æ¿ããŠãããé·è»ž
0.15ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒïŒïŒïŒã®çŽ¡éåã
åããç²åã§ãã€ãããŸããç£æ°æž¬å®ã®çµæãä¿
ç£åHcã¯ã654Oeã飜åç£åÏsã¯85.8emuïŒïœã§
ãã€ãŠãS.F.D.ã¯1.1ã§ãã€ãã該ç²åã¯ãSiã
SiïŒFeã§5.2ååïŒ ãã³ãã«ããCoïŒFeã§5.9å
åïŒ å«æããŠããã å®æœäŸ38ã43ãæ¯èŒäŸïŒ åé§äœã§ãã玡éåãåãããã°ãã¿ã€ãç²å
ã®éã100ïœãåŠçæ¶²å šå®¹éã1.3ãšããŠãåé§
äœã®çš®é¡ãã³ãã«ãæ·»å éãFe2+æ·»å éåã³
NaOHã®æ·»å éãçš®ã å€åããã以å€ã¯ãå®æœ
äŸ40ãšåæ§ã«ããŠCoåã¯CoãšFe2+ã§å€æããã
Siãå«æããŠãã玡éåãåãããã°ãã¿ã€ãç²
åãåŸãããã®äž»èŠè£œé æ¡ä»¶åã³ç¹æ§ãè¡šïŒã«ç€º
ãã å®æœäŸ39ãå®æœäŸ43åã³å®æœäŸ38ã§åŸããã
CoãšFe2+ã§å€æãããSiãå«æããŠãã玡éå
ãåãããã°ãã¿ã€ãç²åç²æ«ã®é»åé¡åŸ®é¡åç
ïŒÃ20000ïŒãããããå³ïŒä¹è³å³ïŒïŒã«ç€ºãã ïŒCoã§å€æããã玡éåãåãããã°ããã€ã
ç²åç²æ«ã®è£œé ïŒ å®æœäŸ44ã48ãæ¯èŒäŸïŒ å®æœäŸ 44 å®æœäŸ28ã§åŸãããSiãå«æããŠãã玡éåã
ãŠããããã°ããã€ãç²åç²æ«100ïœãå¯åçã«
空æ°ã®æ··å ¥ãé²æ¢ããªããç¡«é žã³ãã«ããšç¡«é žç¬¬
äžéãçšããã³ãã«ã0.102molãšç¬¬äžé
0.215molã溶åããŠãã1.0ã®æ°Žäžã«æå ¥ãã
埮现ãªã¹ã©ãªãŒã«ãªããŸã§åæ£ããã次ãã§è©²å
æ£æ¶²ã«18âã®NaOH溶液107mlã泚å ããæŽã«
æ°Žãå ããŠå šå®¹ã1.3ãšããŠOHåºæ¿åºŠ1.0molïŒ
ã®åæ£æ¶²ãšããã該åæ£æ¶²ã®æž©åºŠã60âã«ææž©
ãããã®æž©åºŠã§æ¹æããªããïŒæéåŸã«ã¹ã©ãªãŒ
ãåãåºããæ°ŽæŽãå¥ãã60âã§ä¹Ÿç¥ããŠCo
ã§å€æãããSiãå«æããŠãã玡éåãåããã
ã°ããã€ãç²åãåŸãã åŸãããç²åã¯ãé»åé¡åŸ®é¡èŠ³å¯ã®çµæãåé§
äœã§ããSiãå«æããŠãã玡éåãåãããã°ã
ãã€ãç²åã®åœ¢ç¶ãç²åºŠãç¶æ¿ããŠãããé·è»ž
0.21ÎŒïœã軞æ¯1.1ïŒïŒã®ç²åã§ãã€ãããŸããç£
æ°æž¬å®ã®çµæãä¿ç£åHcã¯550Oeã飜åç£åÏs
ã¯73.5emuïŒïœã§ãã€ãŠãS.F.D.ã¯1.2ã§ãã€ãã
該ç²åã¯ãSiãSiïŒFeã§2.50ååïŒ ãCoãCoïŒ
Feã§7.0ååïŒ å«æããŠããã å®æœäŸ45ã48ãæ¯èŒäŸïŒ åé§äœã§ãã玡éåãåãããã°ããã€ãç²å
ã®éã100ïœãåŠçæ¶²å šå®¹éã1.3ãšããŠãåé§
äœã®çš®é¡ãCoæ·»å éãFe2+æ·»å éãNaOH氎溶
液ã®æ·»å éã枩床ãæéãçš®ã å€åããã以å€
ã¯ãå®æœäŸ47ãšå šãåæ§ã«ããŠCoåã¯CoãšFe2+
ã§å€æãããSiãå«æããŠãã玡éåãåããã
ã°ããã€ãç²åãåŸãããã®äž»èŠè£œé æ¡ä»¶åã³ç¹
æ§ãè¡šïŒã«ç€ºãã å®æœäŸ46ã§åŸãããCoãšFe2+ã§å€æãããSi
ãå«æããŠãã玡éåãåãããã°ãã¿ã€ãç²å
ç²æ«ã®é»åé¡åŸ®é¡åçïŒÃ20000ïŒãå³ïŒïŒã«ç€º
ãã ïŒç£æ°ããŒãã®è£œé ïŒ å®æœäŸ49ã60ãæ¯èŒäŸïŒãïŒ å®æœäŸ 49 å®æœäŸ37ã§åŸãããCoã§å€æãããSiãå«æ
ããŠãã玡éåãåãããã°ãã¿ã€ãç²åç²æ«ã
çšããŠãé©éã®åæ£å€ãå¡©ãé ¢ãå ±éåäœãç±å¯
å¡æ§ããªãŠã¬ã¿ã³æš¹èåã³ãã«ãšã³ãã¡ãã«ãšã
ã«ã±ãã³ãã¡ãã«ã€ãœããã«ã±ãã³ãããªãæ··å
溶å€ãäžå®ã®çµæã«é åããåŸãããŒã«ãã«ã§ïŒ
æéæ··ååæ£ããŠç£æ°å¡æãšããã åŸãããç£æ°å¡æã«äžèšæ··å溶å€ãå ãé©æ£ãª
å¡æç²åºŠã«ãªãããã«èª¿æŽããããªãšã¹ãã«æš¹è
ãã€ã«ã äžã«éåžžã®æ¹æ³ã§å¡åžä¹Ÿç¥ãããŠãç£æ°
ããŒãã補é ããã ãã®ç£æ°ããŒãã®S.F.D.ã¯0.95ä¿ç£åHcã¯
645Oeãæ®çç£æå¯åºŠBrã¯1150Gaussãè§åBrïŒ
Bmã¯0.60ã§ãã€ãã å®æœäŸ50ã60ãæ¯èŒäŸïŒãïŒ ç£æ§ç²åç²æ«ã®çš®é¡ãçš®ã å€åãã以å€ã¯ãå®
æœäŸ49ãšå šãåæ§ã«ããŠç£æ°ããŒãã補é ããã ãã®ç£æ°ããŒãã®è«žç¹æ§ãè¡šïŒã«ç€ºãã
ã«ããªãžãããã€ã¹ã¯ããããããŒãã€ã¹ã¯ãã
ã€ãžã¿ã«èšé²çšç£æ§é žåéç²åç²æ«ãšããŠæé©ã§
ããç²åºŠãåæã§ãããæš¹æç¶ç²åãæ··åšããŠã
ãããäžã€ã軞æ¯ïŒé·è»žïŒç軞ïŒãå°ããïŒïŒïŒ
以äžãæ®ã«ïŒïŒïŒä»¥äžã§ãã€ãŠãããããé«ãä¿
ç£åãšä¿ç£åååžã®å°ãã玡éåãåãããã°ã
ã¿ã€ãç²ååã¯ãã°ããã€ãç²åãããªãç£æ§é ž
åéç²åç²æ«åã³ãã®è£œé æ³ã«é¢ãããã®ã§ã
ãã ãåŸæ¥æè¡ã è¿å¹Žãç£æ°èšé²åççšæ©åšã®é·æéèšé²åãå°
å軜éåãé²ãã«ã€ããŠããããç£æ°èšé²åççš
æ©åšãšç£æ°ããŒããç£æ°ãã€ã¹ã¯çã®ç£æ°èšé²åª
äœãšã®äž¡é¢ã«ãããŠé«æ§èœåãé«å¯åºŠèšé²åã®èŠ
æ±ãé«ãŸã€ãŠããŠããã ç£æ°èšé²åªäœã®é«æ§èœåãé«èšé²å¯åºŠåã®çºã«
ã¯ãåæ£æ§ãå å¡«æ§ãæ®çç£æå¯åºŠBrãä¿ç£å
Hcã®åäžåã³ä¿ç£åååžã®æ¹è¯ãããŒãè¡šé¢ã®
å¹³æ»æ§ã®åäžåã³å¡èã®èå±€åãå¿ èŠã§ããã ãã®äºå®ã¯ãäŸãã°ç·åæè¡ã»ã³ã¿ãŒçºè¡ãç£
æ§ææã®éçºãšç£ç²ã®é«åæ£åæè¡ãã®ç¬¬140é
ã®ãé«èšé²å¯åºŠåã¯ãâŠäžå®ã®åºåã確ä¿ããã
ãã«Brã倧ããããå¿ èŠããããBrã倧ããã
ãã«ã¯ãâŠç£æ§ç²ã®å å¡«çãé«ããªããã°ãªããª
ããããªãèšèŒãåè³æ第15é ã®ãç£æ°èšé²ã«ã
ããæ§èœãè¡šãéèŠãªææ°ã¯ãâŠèšé²å¯åºŠã§ã
ããâŠãã®åéã«ãããä»ãŸã§ã®æ¹è¯ã®æ¹åãèŠ
çŽãããšãâŠèšé²åªäœïŒèããã€é«ãæç£åïŒä¿
ç£åïŒïŒHcïŒã®ç£æ§å±€ãå®çŸããããšâŠããªãèš
èŒãåè³æ第141é ã®ãé«å¯åºŠèšé²ã®ããã«ãå¡
èã®èå±€åã¯ãã€ãšãéèŠãªå åã§ãããããªã
èšèŒããªãžãããã€ã¹ã¯ã®ãããªãããæµ®äžåã®
å Žåã«æŒããåè³æ第143é ã®ããããã®æµ®äžé
ã¯é«å¯åºŠèšé²ã®æ¯é èŠå ã§ãããâŠäœæµ®äžéåã
ãå Žåããã€ã¹ã¯ã®è¡šé¢æ§ãæªããšããããã®ã
ããã³ã°ã«ããåçåºåã®äœäžããå®å®æµ®äžãä¹±
ãããããã¯ã©ãã·ãŠãçºçãããããªãèšèŒå
ã³ãæ¥çµãšã¬ã¯ãããã¯ã¹ïŒâïŒå·ã第112é ã®
ãâŠHcã倧ãããŠããã®ååžã倧ãããšïŒ¢âæ²
ç·ã§è§åæ¯ïŒBrïŒBmïŒãæªããããŒãã§è¯ãåº
åãåºã«ãããããªãèšèŒããæããã§ããã ç£æ°èšé²åªäœã®ãããè«žç¹æ§ã¯ãç£æ°èšé²åªäœ
ã«äœ¿çšãããç£æ§é žåéç²åç²æ«ãšå¯æ¥ãªé¢ä¿ã
æã€ãŠãããç£æ§é žåéç²åç²æ«ã®ç¹æ§æ¹åã匷
ãæãŸããŠããã ä»ãç£æ°èšé²åªäœã®è«žç¹æ§ãšäœ¿çšãããç£æ§é ž
åéç²åç²æ«ã®ç¹æ§ãšã®é¢ä¿ã«ã€ããŠè©³è¿°ããã°
次ã®éãã§ããã å ããç£æ°èšé²åªäœã®æ®çç£æå¯åºŠBrã¯ãç£
æ§é žåéç²åç²æ«ã®ããŒã¯ã«äžã§ã®åæ£æ§ãå¡è
äžã§ã®é åæ§åã³å å¡«æ§ã«äŸåããŠããã ãããŠãããŒã¯ã«äžã§ã®åæ£æ§ãå¡èäžã§ã®é
åæ§åã³å å¡«æ§ãåäžãããããã«ã¯ãããŒã¯ã«
äžã«åæ£ãããç£æ§é žåéç²åç²æ«ã®ç²åºŠãåæ
ã§ãããæš¹æç¶ç²åãæ··åšããŠããªãããšãèŠæ±
ãããã 次ã«ãç£æ°èšé²åªäœã®è¡šé¢æ§ã®æ¹è¯ã®çºã«ã¯ã
åæ£æ§ãé åæ§ãè¯ããäžã€ãç²åãµã€ãºãå°ã
ãç£æ§é žåéç²åç²æ«ãè¯ãããã®ãããªç£æ§é ž
åéç²åç²æ«ãšããŠã¯ç²åºŠãåæã§ãããæš¹æç¶
ç²åãæ··åšããŠããªãããšãèŠæ±ãããã æŽã«ãç£æ°èšé²åªäœã®å¡èã®èå±€åã®çºã«ã¯ã
åæ£æ§ãé åæ§ãè¯ãç£æ§é žåéç²åç²æ«ãè¯
ãããã®ãããªç£æ§é žåéç²åç²æ«ãšããŠã¯ãå
è¿°ããããã«ãç²åºŠãåæã§ãããæš¹æç¶ç²åã
æ··åšããŠããªãããšãèŠæ±ãããã ç£æ°èšé²åªäœã®ä¿ç£åHcã¯ãåè¿°ããéãã
é«æ§èœåãé«èšé²å¯åºŠåã®ããã«ã¯ãåºæ¥ãã ã
é«ããäžã€ãä¿ç£åååžãå°ããããšãå¿ èŠã§ã
ãããã®çºã«ã¯ãããŒã¯ã«äžã«åæ£ãããç£æ§ç²
åç²æ«ã®ä¿ç£åHcãåºæ¥ãã ãé«ããäžã€ãä¿
ç£åååžãå°ããããšãå¿ èŠã§ããã äžæ¹ãç£æ°èšé²åççšæ©åšã«ãããé«èšé²å¯åºŠ
åã®æ¹è¯æ¹æ³ã®äžã€ã¯ãç£æ°ãããã®ã€ããå·Ÿã
çãããããšã§ããã ãã®äºå®ã¯ãååºè³æ第15é ã®ãç£æ°èšé²ã«ã
ããæ§èœãè¡šããéèŠãªææ°ã¯ãâŠèšé²å¯åºŠã§ã
ããâŠãã®åéã«ãããä»ãŸã§ã®æ¹è¯ã®æ¹åãèŠ
çŽãããšâŠç£æ°ãããïŒçãã®ã€ããå·Ÿãšçãã
ã©ãã¯å·ŸâŠããªãèšèŒããæããã§ããã è¿å¹Žãé«å¯åºŠèšé²åãç®çãšããŠãç£æ°ããã
ã®ã®ã€ããå·Ÿã¯ãçã çããªãæ¹åã«ããããç£
æ°ãããã®ã®ã€ããå·Ÿãçãããå Žåãç£å¿ã®ã®
ã€ããä»è¿ã®ç£çã¯ãé·ææåãšãšãã«åŒ·ãåçŽ
æåãå«ãŸããããã«ãªãããã®çºãããããšæ¥
觊ããŠããç£æ°èšé²åªäœã®è¡šé¢å±€ã§ã¯ãåªäœã«å¯Ÿ
ããŠåçŽãªæ¹åã®ç£æååžãèããå¢å ããã åŸã€ãŠãé«å¯åºŠèšé²åã®çºã«ã¯ç£æ°èšé²åªäœäž
ã§åªäœã«åçŽãªæ¹åã«ç£å容ææ¹åãæãããã
ãšã奜ãŸããã åŸæ¥äœ¿çšãããŠãã代衚çãªç£æ§ç²åç²æ«ã¯é
ç¶ã®ãã°ãã¿ã€ãç²ååã¯ãã°ããã€ãç²åç²æ«
ã§ããããã®å Žå圢ç¶ç°æ¹æ§ã«ããç£å容ææ¹å
ã¯éç¶ã®é·ææ¹åã§ããã®ã§ãéç¶é žåéç²åã
å¡èäžã§åçŽã«é åãããããäžæ¬¡å çã«ã©ã³ã
ã ã«é åãããŠåçŽæåãå¢å ãããæ¹ã奜ãŸã
ãã ãã®äºå®ã¯ãç¹éæ57â183626å·å ¬å ±ã®ããŸ
ããè¿å¹ŽåçŽç£åèšé²ãšããèãæ¹ãå°å ¥ããã
ç£æ°èšé²åªäœã®é¢ã«åçŽãªæ¹åã®æ®çç£åæåã
æå¹ã«äœ¿ããšããææ¡ãããããã®åçŽç£åèšé²
ã«ãããšäžã«å®çŸ©ããèšé²å¯åºŠãé«ããªããâŠã
ãªãèšèŒãåã³ãå¡åžåã®ç£æ§å±€ã§ãç£æ§é¢ã«å¹³
è¡ã§ãªãæããŸãã¯åçŽã®ç£åæåãå©çšâŠããª
ãèšèŒããæããã§ããã ç£æ§é žåéç²åç²æ«ãå¡èäžã§äžæ¬¡å çã«ã©ã³
ãã ã«é åãããåçŽæåãå¢å ãããçºã«ã¯ã
åè¿°ããéãç²åºŠãåæã§ãããæš¹æç¶ç²åãæ··
åšããŠããªãããšã«å ããŠãç£æ§é žåéç²åç²æ«
ã®ç²åãµã€ãºãå°ãããã軞æ¯ãåºæ¥ãã ãå°ã
ãïŒïŒïŒä»¥äžãæ®ã«ïŒïŒïŒä»¥äžã«ããããšãå³
ã¡ã圢ç¶çã«çæ¹çã«ããããšãæå¹ã§ããã ãã®äºå®ã¯ãååºç¹éæ57â183626å·å ¬å ±ã®
ãæ¬çºæã¯ãâŠç²åãµã€ãºã0.30Ό以äžãšå°ããã
ãã€âŠãã®çžŠïŒæšªæ¯ãïŒãè¶ãïŒä»¥äžãšããçã
圢ç¶ãšããããšã«ãããâŠå¡åžã也ç¥æã®åã¿æ¹
åã®å¡èã®æžåã«ããç»å é åãå¡åžæã®æµåã«
ããæµå»¶æ¹åãžã®é åãšãã€ãç²åãé¢å ã«æšªã
ãã€ãŠé åããããšããæ§åãæãããã€å¿ èŠãª
ãç©æ¥µçã«åçŽãªæ®çç£åã倧ããåããããã«
ããããšãç¹åŸŽãšããããªãèšèŒããæããã§ã
ãã çŸåšãç£æ°èšé²çšç£æ§ç²åç²æ«ãšããŠäž»ã«éç¶
æ¶ãã°ãã¿ã€ãç²åç²æ«ãŸãã¯ãéç¶æ¶ãã°ãã
ã€ãç²åç²æ«ãçšããããŠããããããã¯äžè¬
ã«ã第äžé塩氎溶液ãšã¢ã«ã«ãªãšãåå¿ãããŠåŸ
ãããæ°Žé žå第äžéç²åãå«ãPH11以äžã®ã³ãã€
ã氎溶液ã空æ°é žåãïŒéåžžãã湿åŒåå¿ããšåŒ
ã°ããŠãããïŒãŠåŸãããéç¶æ¶ã²ãŒã¿ã€ãç²å
ããæ°ŽçŽ çéå æ§ã¬ã¹äž300ã400âã§éå ããŠé
ç¶æ¶ãã°ãã¿ã€ãç²åãšãããŸãã¯æ¬¡ãã§ãã
ãã空æ°äž200ã300âã§é žåããŠéç¶æ¶ãã°ãã
ã€ãç²åãšããããšã«ããåŸãããŠããã äžè¿°ããããã«ãç²åºŠãåæã§æš¹æç¶ç²åãæ··
åšããŠãããã軞æ¯ïŒé·è»žïŒç軞ïŒãå°ããç£æ§
ç²åç²æ«ã¯ãçŸåšãæãèŠæ±ãããŠãããšããã§
ããããã®ãããªç¹æ§ãåããç£æ§ç²åç²æ«ãåŸ
ãããã«ã¯ãåºçºåæã§ããã²ãŒã¿ã€ãç²åç²æ«
ã®ç²åºŠã§åæã§æš¹æç¶ç²åãæ··åšããŠããããç²
åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãå°ããããšãå¿ èŠã§ã
ãã åŸæ¥ãPH11以äžã®ã¢ã«ã«ãªé åã§ã²ãŒã¿ã€ãç²
åã補é ããæ¹æ³ãšããŠæã代衚çãªå ¬ç¥æ¹æ³
ã¯ã第äžé塩氎溶液ã«åœé以äžã®ã¢ã«ã«ãªæº¶æ¶²ã
å ããŠåŸãããæ°Žé žå第äžéç²åãå«ã溶液ãPH
11以äžã«ãŠ80â以äžã®æž©åºŠã§é žååå¿ãè¡ãããš
ã«ãããã²ãŒã¿ã€ãç²åãåŸããã®ã§ããã ãšããã§ãåšç¥ã®ããšããç£æ§ç²åç²æ«ã®ä¿ç£
åã®å€§ããã¯ã圢ç¶ç°æ¹æ§ãçµæ¶ç°æ¹æ§ãæªç°æ¹
æ§åã³äº€æç°æ¹æ§ã®ãããããè¥ããã¯ãããã®
çžäºäœçšã«äŸåããŠãããçŸåšãç£æ°èšé²çšç£æ§
ç²åç²æ«ãšããŠäœ¿çšãããŠããéç¶æ¶ãã°ãã¿ã€
ãç²åç²æ«ãåã¯ãéç¶æ¶ãã°ããã€ãç²åç²æ«
ã¯ããã®åœ¢ç¶ã«ç±æ¥ããç°æ¹æ§ãå©çšããããšã«
ããæ¯èŒçé«ãä¿ç£åïŒ350ã450OeïŒãåŸãŠã
ãã ãã®ããã«ãæ¢ç¥ã®éç¶æ¶ãã°ãã¿ã€ãç²åç²
æ«åã¯ãéç¶æ¶ãã°ããã€ãç²åç²æ«ã¯ããã®åœ¢
ç¶ç°æ¹æ§ãå©çšããŠæ¯èŒçé«ãä¿ç£åãåŸããã®
ã§ãããããããç²åãCoã§å€æããããšã«ã
ãããã®çµæ¶ç°æ¹æ§ãå©çšããŠãæŽã«ãä¿ç£åã
åäžãããããšãäžè¬çã«ç¥ãããŠããããã®å Ž
åãCoã®æ·»å éãå¢å ããçšãä¿ç£åã¯é«ããª
ãããšãç¥ãããŠããã ãçºæã解決ããããšããåé¡ç¹ã ç²åºŠãåæã§æš¹æç¶ç²åãæ··åšããŠãããã軞
æ¯ïŒé·è»žïŒç軞ïŒãå°ããç£æ§ç²åç²æ«ã¯çŸåšã
æãèŠæ±ãããŠãããšããã§ããããåºçºåæã§
ããéç¶æ¶ã²ãŒã¿ã€ãç²åã補é ããåè¿°ã®å ¬ç¥
æ¹æ³ã«ããåŸãããç²åç²æ«ã¯ã軞æ¯ïŒé·è»žïŒç
軞ïŒã10ïŒïŒä»¥äžã®éç¶åœ¢æ ãåããç²åã§ã
ããæš¹æç¶ç²åãæ··åšããŠããããŸãç²åºŠããèš
ãã°ãåæãªç²åºŠãæããç²åã§ãããšã¯èšãé£
ãã ããã§ãæ¬çºæè ã¯ã第äžé氎塩溶液ãšçé žã¢
ã«ã«ãªãšãåå¿ãããŠåŸãããFeCO3ãå«ã氎溶
液ã«é žçŽ å«æã¬ã¹ãéæ°ããŠé žåããããšã«ãã
ã²ãŒã¿ã€ãç²åã補é ããæ¹æ³ïŒç¹éæ50â
80999å·å ¬å ±ïŒã«çç®ããã ãã®æ¹æ³ã«ããå Žåã«ã¯ãç²åºŠãåæã§ããã
æš¹æç¶ç²åãæ··åšããŠãããã玡éåãåããã²
ãŒã¿ã€ãç²åãããªãç²æ«ãåŸãããã ããããªããããã®æ¹æ³ã«ããåŸãããã²ãŒã¿
ã€ãç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒã¯ïŒïŒïŒç²åºŠã§ã
ããæŽã«ã軞æ¯ïŒé·è»žïŒç軞ïŒãå°ããããããš
ãèŠæ±ãããã äžæ¹ãç£æ§é žåéç²åç²æ«ã®è»žæ¯ïŒé·è»žïŒç
軞ïŒãå°ããããå Žåããããç£æ§é žåéç²åç²
æ«ã®ä¿ç£åã¯åœ¢ç¶ã«ç±æ¥ããç°æ¹æ§ãå©çšããã
ãšãã§ããªãçºã300OeçšåºŠä»¥äžãšãªã€ãŠããŸ
ãã ããã§ãåè¿°ããéããç£æ§é žåéç²åç²æ«ã
Coå€æããããšã«ãããä¿ç£åãé«ããããšã
ç¥ãããŠããã ããããªãããCoã§å€æããç£æ§é žåéç²å
ç²æ«ã¯ä¿ç£åååžã®åºããã倧ãããšããæ¬ ç¹ã
æããŠãããããã¯ãCoã§å€æããç£æ§é žåé
ç²åç²æ«ã埮èŠçã«èŠãå Žåãåã ã®ç²åéã«ã
ããŠCoå€æéãçžéããããšåã³ïŒåã®ç²åã®
ç²åè¡šé¢ã«ãããŠãCoã®çµææ¯ã«ã°ãã€ããç
ããŠããããšã«ãããã®ãšèããããŠããã ãåé¡ç¹ã解決ããçºã®æ段ã æ¬çºæè ã¯ãç²åºŠãåæã§æš¹æç¶ç²åãæ··åšã
ãŠãããã軞æ¯ïŒé·è»žïŒç軞ïŒãå°ããç£æ§é žå
éç²åç²æ«ãåŸãã¹ããçš®ã æ€èšãéããçµæã
第äžé塩氎溶液ãšçé žã¢ã«ã«ãªãšãåå¿ãããŠåŸ
ãããFeCO3ãå«ã氎溶液ã«é žçŽ å«æã¬ã¹ãéæ°
ããŠé žåããããšã«ãã玡éåãåããã²ãŒã¿ã€
ãç²åç²æ«ãçæãããã«ãããã第äžé塩氎溶
液ãåèšçé žã¢ã«ã«ãªåã³é žçŽ å«æã¬ã¹ãéæ°ã
ãŠé žååå¿ãè¡ãããåã®åèšFeCO3ãå«ã氎溶
液ã®ããããã«ãæ°Žå¯æº¶æ§ã±ã€é žå¡©ãFeã«å¯Ÿã
Siæç®ã§0.1ã20ååïŒ æ·»å ããå Žåã«ã¯ãåºçº
åæã§ãã玡éåãåããã²ãŒã¿ã€ãç²åã®è»žæ¯
ïŒé·è»žïŒç軞ïŒãçããïŒïŒïŒä»¥äžãæ®ã«ãïŒïŒ
ïŒä»¥äžã«ããããšãã§ãããšããç¥èŠãæ¢ã«åŸãŠ
ããïŒç¹é¡æ58â200621å·ãç¹é¡æ59â87011
å·ïŒã æŽã«ãæ¬çºæè ã¯ãç²åºŠãåæã§ãããæš¹æç¶
ç²åãæ··åšããŠããããäžã€ã軞æ¯ïŒé·è»žïŒç
軞ïŒãå°ãããïŒïŒïŒä»¥äžãæ®ã«ïŒïŒïŒä»¥äžã§ã
ã€ãŠãããããé«ãä¿ç£åãšä¿ç£åååžã®å°ãã
ç£æ§é žåéç²åç²æ«ãåŸãã¹ãçš®ã æ€èšãéãã
çµæãäžèšSiãå«æãã玡éåãåããã²ãŒã¿ã€
ãç²åãåºçºåæãšããŠéå ãåã¯éå ãé žåã
ãŠåŸãããSiãå«æãã玡éåãåããç£æ§é žå
éç²åç²æ«ãåé§äœãšããŠçšãCoã§å€æããå Ž
åã«ã¯ãé«ãä¿ç£åãæãããšåæã«ä¿ç£åååž
ãå°ãããã®ã§ãããšããå šãæ°èŠãªç¥èŠãåŸã
æ¬çºæãå®æãããã®ã§ããã å³ã¡ãæ¬çºæã¯ãSiãFeã«å¯Ÿã0.1ã20ååïŒ
å«æã軞æ¯ïŒé·è»žïŒç軞ïŒãïŒïŒïŒä»¥äžã§ãã€
ãŠãç²åè¡šé¢ãFeã«å¯Ÿã0.5ã15.0ååïŒ ã®Coã§
å€æãããŠãããäžã€ãä¿ç£åååžãS.F.D.ã§
1.5以äžã§ããããšãç¹åŸŽãšãã玡éåãåãã
ãã°ãã¿ã€ãç²åãããªãç£æ§é žåéç²åç²æ«ã
SiãFeã«å¯Ÿã0.87ã7.7ååïŒ å«æã軞æ¯ïŒé·
軞ïŒç軞ïŒã1.3ïŒïŒä»¥äžã§ãã€ãŠãç²åè¡šé¢ã
Feã«å¯Ÿã0.5ã15.0ååïŒ ã®Coã§å€æãããŠããã
äžã€ãä¿ç£åååžãS.F.D.ã§1.5以äžã§ããããš
ãç¹åŸŽãšãã玡éåãåãããã°ããã€ãç²åã
ããªãç£æ§é žåéç²åç²æ«åã³ç¬¬äžé塩氎溶液ãš
çé žã¢ã«ã«ãªãšãåå¿ãããŠåŸãããFeCO3ãå«
ã氎溶液ã«é žçŽ å«æã¬ã¹ãéæ°ããŠé žåããããš
ã«ãã玡éåãåããã²ãŒã¿ã€ãç²åãçæãã
ãã«ããããåèšç¬¬äžé塩氎溶液ãåèšçé žã¢ã«
ã«ãªåã³é žçŽ å«æã¬ã¹ãéæ°ããŠé žååå¿ãè¡ã
ããåã®åèšFeCO3ãå«ã氎溶液ã®ããããã«ã
æ°Žå¯æº¶æ§ã±ã€é žå¡©ãFeã«å¯ŸãSiæç®ã§0.1ã20å
åïŒ æ·»å ããŠããããšã«ãããSiãå«æãã玡é
åãåããã²ãŒã¿ã€ãç²åãçæããã該Siãå«
æãã玡éåãåããã²ãŒã¿ã€ãç²åè¥ããã¯ã
ããå ç±è±æ°ŽããSiãå«æãã玡éåãåããã
ãã¿ã€ãç²åãéå æ§ã¬ã¹äžã§å ç±éå ããŠåŸã
ãã玡éåãåãããã°ãã¿ã€ãç²åãåé§äœç²
åãšããŠçšãã該åé§äœç²åã®Feã«å¯Ÿã0.5ã
15.0ååïŒ ã®Coãå«ãããã«ãäžèšåé§äœç²åã
æ°Žé žåã³ãã«ãåã¯æ°Žé žåã³ãã«ããšæ°Žé žå第äž
éãå«ãã¢ã«ã«ãªæžæ¿æ¶²äžã«åæ£ããã該åæ£æ¶²
ãéé žåæ§é°å²æ°äžã50ã100âã®æž©åºŠç¯å²ã§å
ç±åŠçããããšã«ããCoåã¯CoãšFe2+ã§å€æã
ããSiãå«æãã玡éåãåãããã°ãã¿ã€ãç²
åãåŸãããšãããªã玡éåãåãããã°ãã¿ã€
ãç²åãããªãç£æ§é žåéç²åç²æ«ã®è£œé æ³ã§ã
ãã ãäœçšã å ããæ¬çºæã«ãããŠæãéèŠãªç¹ã¯ãé«ãä¿
ç£åãšä¿ç£åååžãå°ããCoã§å€æããã玡é
åãåããç£æ§é žåéç²åç²æ«ã補é ããã«åœã
ããCoå€æã®çºã®åé§äœãšããŠç²åºŠãåæã§æš¹
æç¶ç²åãæ··åšããŠãããã軞æ¯ïŒé·è»žïŒç軞ïŒ
ãå°ããSiãå«æãã玡éåãåããç£æ§é žåé
ç²åç²æ«ãçšããç¹ã§ããã æ¬çºæã«ä¿ãç£æ§é žåéç²åç²æ«ã¯ãäœæ ãä¿
ç£åååžãå°ãããã®ã§ãããã¯æªã æããã§ã¯
ãªãããæ¬çºæè ã¯ãæ¬çºæã«ä¿ãåé§äœã§ãã
Siãå«æãã玡éåãåãããã°ãã¿ã€ãç²åå
ã¯ãã°ããã€ãç²åãåºçºåæã§ããã²ãŒã¿ã€ã
ç²åã®è£œé æ³ã«èµ·å ããŠç²åºŠãèããåæã§ãã
çºãåã ã®ç²åéã«ãããCoå€æéã®ã°ãã€ã
ãå°ããçºã§ããããšèããŠããã ä»ãæ¬çºæè ãè¡ã€ãæ°å€ãã®å®éšäŸãããã
ã®äžéšãæœåºããŠèª¬æããã°ã次ã®éãã§ããã å³ïŒã¯ãæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»å éãšSiãå«æ
ãã玡éåãåããã²ãŒã¿ã€ãç²åã®è»žæ¯ãšã®é¢
ä¿å³ã§ããã å³ã¡ãFe2+1.0molïŒãå«ãç¡«é žç¬¬äžé氎溶
液3.0ããããããããåå¿åšäžã«æºåããã
ã±ã€é žãœãŒããFeã«å¯ŸãSiæç®ã§ïŒã20ååïŒ
æ·»å ããŠåŸãããçé žãœãŒã氎溶液2.0ã«å ãã
PHçŽ10ã«ãããŠFeCO3ãå«ãæžæ¿æ¶²ãåŸã該æžæ¿
液ã«æž©åºŠ50âã«ãããŠæ¯å15ã®ç©ºæ°ãéæ°ããŠ
é žååå¿ãè¡ãããããšã«ããåŸãããSiãå«æ
ãã玡éåãåããã²ãŒã¿ã€ãç²åã®è»žæ¯ïŒé·
軞ïŒç軞ïŒãšæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»å éãšã®é¢ä¿
ã瀺ãããã®ã§ããã å³ïŒããæãããªéããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»
å éã®å¢å ã«äŒŽã€ãŠè»žæ¯ïŒé·è»žïŒç軞ïŒãçããª
ãåŸåã«ããã å³ïŒåã³å³ïŒã¯ããããããæ°Žå¯æº¶æ§ã±ã€é žå¡©
ã®æ·»å éãšSiãå«æãã玡éåãåããç£æ§é žå
éç²åç²æ«ã®è»žæ¯ãšã®é¢ä¿å³ã§ãããå³ïŒããã°
ãã¿ã€ãç²åç²æ«ã®å Žåãå³ïŒããã°ããã€ãç²
åç²æ«ã®å Žåã§ããã å³ã¡ãå³ïŒã¯å³ïŒã®å Žåãšåæ§ã«ããŠåŸããã
Siãå«æãã玡éåãåããã²ãŒã¿ã€ãç²åç²æ«
200ïœã400âã§45åéå ç±éå ããããšã«ããåŸ
ãããSiãå«æãã玡éåãåãããã°ãã¿ã€ã
ç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãšæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®
æ·»å éãšã®é¢ä¿ã瀺ãããã®ã§ããã å³ïŒããæãããªéããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»
å éã®å¢å ã«äŒŽã€ãŠçŽ¡éåãåãããã°ãã¿ã€ã
ç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãå°ãããªãåŸåã«ã
ãã æ°Žå¯æº¶æ§ã±ã€é žå¡©ãFeã«å¯ŸãSiæç®ã§0.1åå
ïŒ ä»¥äžæ·»å ããå Žåã«ã¯ãåŸããã玡éåãåã
ããã°ãã¿ã€ãç²åã®è»žæ¯ãïŒïŒïŒä»¥äžã«ããã
ãšãã§ãã0.3ååïŒ ä»¥äžæ·»å ããå Žåã«ã¯ãåŸ
ããã玡éåãåãããã°ãã¿ã€ãç²åã®è»žæ¯ã
ïŒïŒïŒä»¥äžã«ããããšãã§ããã å³ïŒã¯ãå³ïŒã§åŸãããSiãå«æãã玡éåã
åãããã°ãã¿ã€ãç²åç²æ«150ïœã空æ°äžã§15
åéé žåããããšã«ããåŸãããSiãå«æãã玡
éåãåãããã°ããã€ãç²åã®è»žæ¯ïŒé·è»žïŒç
軞ïŒãšæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»å éãšã®é¢ä¿ã瀺ã
ããã®ã§ããã å³ïŒããæãããªéããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»
å éã®å¢å ã«äŒŽã€ãŠSiãå«æãã玡éåãåãã
ãã°ããã€ãç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãå°ãã
ãªãåŸåã«ããã æ°Žå¯æº¶æ§ã±ã€é žå¡©ã¯Feã«å¯ŸãSiæç®ã§0.1åå
ïŒ ä»¥äžæ·»å ããå Žåã«ã¯ãåŸããã玡éåãåã
ããã°ããã€ãç²åã®è»žæ¯ãïŒïŒïŒä»¥äžã«ããã
ãšãã§ãã0.87ååïŒ ä»¥äžæ·»å ããå Žåã«ã¯ãåŸ
ããã玡éåãåãããã°ããã€ãç²åã®è»žæ¯ã
1.31以äžã«ããããšãã§ããã å³ïŒã¯ãå³ïŒã§åŸãããSiãå«æãã玡éåã
åãããã°ããã€ãç²åãFeã«å¯Ÿã4.0ååïŒ ã®
Coã§å€æããããšã«ããåŸãããCoã§å€æãã
ã玡éåãåãããã°ããã€ãç²åã®S.F.D.ãšSi
å«æéãšã®é¢ä¿ã瀺ãããã®ã§ããã å³ïŒããæãããªéããSiå«æéã®å¢å ã«äŒŽã€
ãŠS.F.D.ã¯å°ãããªã€ãŠãããSiå«æéãå¢å ã
ãçšä¿ç£åååžãå°ãããªãããšããããã å°ãããã§ãS.F.D.ïŒSwitching Field Distrib
utionïŒãšã¯ãç£æ§é žåéç²åç²æ«ã®ãã¹ããªã·
ã¹âã«ãŒãïŒHysteresisâLoopïŒã®ç¬¬ïŒè±¡é
ïŒåã¯ç¬¬ïŒè±¡éïŒããä¿ç£åã®åŸ®åæ²ç·ãæ±ãã
ãã®åŸ®åæ²ç·ã®å䟡巟ã埮åæ²ç·ã®ããŒã¯å€ã®ä¿
ç£åã§é€ããå€ãèšãããã®å€ãå°ããçšãä¿ç£
åååžãå°ããã ç£æ§å¡èã«ãããä¿ç£åååžã¯ã䜿çšããCo
ã§å€æãããç£æ§é žåéç²åç²æ«ã®ä¿ç£åååžã«
ãã€ãŠå·Šå³ããããã®ã§ãããä¿ç£åååžã®å°ã
ãCoã§å€æãããç£æ§é žåéç²åç²æ«ãçšããŠ
補é ããç£æ§å¡èã®ä¿ç£åååžã¯å°ãããªããç£
æ§å¡èã®S.F.D.ãäžèšç£æ§é žåéç²åç²æ«ã®å Žå
ãšåæ§ã«ããŠæ±ããããšãã§ããã 次ã«ãæ¬çºæå®æœã«ããã€ãŠè«žæ¡ä»¶ã«ã€ããŠè¿°
ã¹ãã æ¬çºæã«ãããŠäœ¿çšããã第äžé塩氎溶液ãšã
ãŠã¯ãç¡«é žç¬¬äžé氎溶液ãå¡©å第äžé氎溶液çã
ããã æ¬çºæã«ãããŠäœ¿çšãããçé žã¢ã«ã«ãªãšããŠ
ã¯ãçé žãããªãŠã ãçé žã«ãªãŠã ãçé žã¢ã³ã¢
ããŠã ãåç¬ã§ãåã¯ãããããšçé žæ°ŽçŽ ãããª
ãŠã ãçé žæ°ŽçŽ ã«ãªãŠã ãçé žæ°ŽçŽ ã¢ã³ã¢ããŠã
çã®çé žæ°ŽçŽ ã¢ã«ã«ãªãšã䜵çšããŠäœ¿çšããããš
ãã§ããã æ¬çºæã«ãããåå¿æž©åºŠã¯ã40ã80âã§ããã 40âæªæºã§ããå Žåã«ã¯ã玡éåãåããã²ãŒ
ã¿ã€ãç²åãåŸãããšãã§ããªãã 80âãè¶ããå Žåã«ã¯ãç²ç¶Fe3O4ãæ··åšããŠ
ããã æ¬çºæã«ãããPHã¯ãïŒã11ã§ããã ïŒæªæºãåã¯11ãè¶ããå Žåã«ã¯ã玡éåãå
ããã²ãŒã¿ã€ãç²åãåŸãããšãã§ããªãã æ¬çºæã«ãããé žåæ段ã¯ãé žçŽ å«æã¬ã¹ïŒäŸ
ãã°ç©ºæ°ïŒã液äžã«éæ°ããããšã«ããè¡ãã æ¬çºæã«ãããŠäœ¿çšãããæ°Žå¯æº¶æ§ã±ã€é žå¡©ãš
ããŠã¯ããããªãŠã ãã«ãªãŠã ã®ã±ã€é žå¡©ãã
ãã æ¬çºæã«ãããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã¯ãçæãã
玡éåãåããã²ãŒã¿ã€ãç²åã®è»žæ¯ïŒé·è»žïŒç
軞ïŒã«é¢äžãããã®ã§ãããåŸã€ãŠã玡éåãå
ããã²ãŒã¿ã€ãç²åã®çæåå¿ãéå§ãããåã«
ååšãããŠããããšãå¿ èŠã§ããã第äžé塩氎溶
液ãçé žã¢ã«ã«ãªåã³é žçŽ å«æã¬ã¹ãéæ°ããŠé ž
ååå¿ãè¡ãããåã®FeCO3ãå«ã氎溶液ã®ãã
ããã«æ·»å ããããšãã§ããã æ¬çºæã«ãããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»å éã¯ã
Feã«å¯ŸããŠSiæç®ã§0.1ã20ååïŒ ã§ããã 0.1ååïŒ æªæºã§ããå Žåã«ã¯ã玡éåãåã
ããã°ãã¿ã€ãç²ååã¯ãã°ããã€ãç²åã®è»žæ¯
ïŒé·è»žïŒç軞ïŒãçããããšããå¹æãååéæ
ããããšãã§ããªãã 20ååïŒ ãè¶ããå Žåã«ã¯ãçæãã玡éåã
åããã²ãŒã¿ã€ãç²åãããªãç²æ«ãéå ãå
ã¯ãæŽã«é žåããããšã«ããåŸãããç£æ§é žåé
ç²åç²æ«ã®é£œåç£åãäœäžããçºå¥œãŸãããªãã 玡éåãåãããã°ãã¿ã€ãç²ååã¯ãã°ãã
ã€ãç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒåã³é£œåç£åãè
æ ®ããå Žåã0.3ã15ååïŒ ã奜ãŸããã æ·»å ããæ°Žå¯æº¶æ§ã±ã€é žå¡©ã¯ãã»ãŒå šéãçæ
ã²ãŒã¿ã€ãç²åç²æ«äžã«å«æãããåŸåºã®è¡šïŒã«
瀺ãããéããåŸãããã²ãŒã¿ã€ãç²åç²æ«ã¯æ·»
å éãšã»ãŒåéã®Feã«å¯ŸãSiæç®ã§0.14ã11.01
ååïŒ ãå«æããŠããã該ç²åãå ç±éå ããŠåŸ
ããããã°ãã¿ã€ãç²åããŸããåŸåºã®è¡šïŒã«ç€º
ãããéããæ·»å éãšã»ãŒåéã®Feã«å¯ŸãSiæ
ç®ã§0.13ã10.99ååïŒ ãå«æããŠãããåèšã
ã°ãã¿ã€ãç²åãæŽã«é žåããŠåŸããããã°ãã
ã€ãç²åããŸããåŸåºã®è¡šïŒã«ç€ºãããéããæ·»
å éãšã»ãŒåéã®Feã«å¯ŸãSiæç®ã§0.98ã10.99
ååïŒ ãå«æããŠããã æ¬çºæã«ãããç£æ§é žåéç²åç²æ«ã®Coå€æ
ã¯ãåžžæ³ã«ããè¡ãããšãã§ããäŸãã°ãç¹å ¬æ
52â24237å·å ¬å ±ãç¹å ¬æ52â24238å·å ¬å ±ãç¹å ¬
æ52â36751å·å ¬å ±åã³ç¹å ¬æ52â36863å·å ¬å ±ã«
èšèŒãããŠããããã«ãåé§äœç²åãæ°Žé žåã³ã
ã«ãåã¯ãæ°Žé žåã³ãã«ããšæ°Žé žå第äžéãå«ã
ã¢ã«ã«ãªæžæ¿æ¶²äžã«åæ£ããã該åæ£æ¶²ãéé žå
æ§é°å²æ°äžã50ã100âã®æž©åºŠç¯å²ã§å ç±åŠçã
ãããšã«ããè¡ãããã æ¬çºæã«ãããæ°Žé žåã³ãã«ãã¯ãç¡«é žã³ãã«
ããå¡©åã³ãã«ãçã®æ°Žå¯æº¶æ§ã³ãã«ãå¡©ãšæ°Žé ž
åãããªãŠã ãæ°Žé žåã«ãªãŠã çã®æ°Žé žåã¢ã«ã«
ãªæ°Žæº¶æ¶²ãçšããããšã«ããåŸãããã æ¬çºæã«ãããæ°Žé žå第äžéã¯ãç¡«é žç¬¬äžéã
å¡©å第äžéçã®æ°Žå¯æº¶æ§ç¬¬äžéå¡©ãšæ°Žé žåãããª
ãŠã ãæ°Žé žåã«ãªãŠã çã®æ°Žé žåã¢ã«ã«ãªæ°Žæº¶æ¶²
ãçšããããšã«ããåŸãããã æ¬çºæã«ãããCoå€æã®æž©åºŠã¯ãåŠçæéã«
é¢äžãããã®ã§ããã枩床ã50â以äžãšããã°ã
Coåã¯CoãšFe2+ã§å€æããããã°ãã¿ã€ãç²å
åã¯ãã°ããã€ãç²åãçæãé£ããçæãããš
ããŠã極ããŠé·æéã®åŠçãå¿ èŠãšããã æ¬çºæã«ãããŠCoå€æãéé žåæ§é°å²æ°äžã§
è¡ãã®ã¯ãã³ãã«ãåã³ç¬¬äžéãæ°Žé žåç©ã®æå
ããŠå€æãçèµ·ããããã§ãããåæ£æ¶²äžã®æ°Žé ž
åã³ãã«ãåã³æ°Žé žå第äžéã®é žåãé²æ¢ããã
ãã§ããã æ¬çºæã«ãããæ°Žå¯æº¶æ§ã³ãã«ãå¡©ã®å€æé
ã¯ãFeã«å¯ŸãCoæç®ã§0.5ã15.0ååïŒ ã§ããã
0.5ååïŒ æªæºã§ããå Žåã«ã¯ãåŸããã玡éå
ãåãããã°ãã¿ã€ãç²ååã¯ãã°ããã€ãç²å
ã®ä¿ç£åãåäžããããšããå¹æãååéæãã
ããšãã§ããªãã15.0ååïŒ ãè¶ããå Žåã«ã¯ã
åŸããã玡éåãåãããã°ãã¿ã€ãç²ååã¯ã
ã°ããã€ãç²åã®ä¿ç£åååžãå°ãããããšãã
å¹æãååã§ã¯ãªãã æ·»å ããæ°Žå¯æº¶æ§ã³ãã«ãå¡©ã¯ãã»ãŒå šéãç£
æ§é žåéç²åã®ç²åè¡šé¢ã«ãããå€æã®çºã«å©çš
ãããã 玡éåãåãããã°ãã¿ã€ãç²ååã¯ãã°ãã
ã€ãç²åã®ä¿ç£ååã³ä¿ç£åååžãèæ ®ããå Ž
åã2.0ã13.0ååïŒ ã奜ãŸããã æ¬çºæã«ãããå ç±éå 枩床ã¯ãåžžæ³ã«ãã
300ã500âã§è¡ãããšãã§ããã 300âæªæºã§ããå Žåã¯ãéå åå¿ã®é²è¡ãé
ããé·æéãèŠããããŸãã500âãè¶ããå Žå
ã«ã¯ãéå åå¿ãæ¥æ¿ã«é²è¡ããŠç²å圢æ ã®å€åœ¢
ãšãç²ååã³ç²åçžäºéã®çŒçµãåŒãèµ·ãããŠã
ãŸãã ãå®æœäŸã 次ã«ãå®æœäŸäžŠã³ã«æ¯èŒäŸã«ãããæ¬çºæã説
æããã å°ãååºã®å®éšäŸåã³ä»¥äžã®å®æœäŸäžŠã³ã«æ¯èŒ
äŸã«ãããç²åã®è»žæ¯ïŒé·è»žïŒç軞ïŒãé·è»žã¯ã
ããããé»åé¡åŸ®é¡åçãã枬å®ããæ°å€ã®å¹³å
å€ã§ç€ºããã ç²åäžã®Siåã³CoãZn䞊ã³ã«Niéã¯ããè¢å
ç·åæè£ çœ®3063MåãïŒçåŠé»æ©å·¥æ¥è£œïŒã䜿
çšããJIS K0119ã®ãããå ç·åæéåãã«åŸ
ã€ãŠãããå ç·åæãè¡ãããšã«ãã枬å®ã
ãã ç£æ§é žåéç²åç²æ«äžŠã³ã«ç£æ§å¡èã®ç£æ°ç¹æ§
ã¯ãæ¯åè©Šæåç£åèšVSM âïŒåïŒæ±è±å·¥æ¥
補ïŒã䜿çšãã枬å®ç£å Žã¯ãç£æ§ç²æ«ã®å Žå
5KOeãç£æ§å¡èã®å Žå10KOeã§æž¬å®ããã S.F.D.ã®æž¬å®ã¯ãåèšç£æ°æž¬å®åšã®åŸ®ååè·¯ã
䜿çšããŠãHcã®åŸ®åæ²ç·ãåŸããã®æ²ç·ã®å䟡
å·Ÿã枬å®ãããã®å€ãæ²ç·ã®ããŒã¯å€ã®Hcã§é€
ããããšã«ããæ±ããã ïŒçŽ¡éåãåããã²ãŒã¿ã€ãç²åç²æ«ã®çæïŒ å®æœäŸïŒã12ãæ¯èŒäŸïŒ å®æœäŸ ïŒ Fe2+1.0molïŒãå«ãç¡«é žç¬¬äžé氎溶液30
ããããããããåå¿åšäžã«æºåãããFeã«å¯Ÿ
ãSiæç®ã§0.15ååïŒ ãå«ãããã«ã±ã€é žãœãŒã
ïŒïŒå·ïŒïŒSiO228.55wtïŒ ïŒ9.5ïœãæ·»å ããŠåŸãã
ã3.53molïŒã®Na2CO3氎溶液20ã«å ããPH
9.9ã枩床50âã«ãããŠSiãå«æããFeCO3ã®ç
æãè¡ã€ãã äžèšSiãå«æããFeCO3ãå«ã氎溶液ã«æž©åºŠ50
âã«ãããŠãæ¯å130ã®ç©ºæ°ã6.5æééæ°ããŠ
Siãå«æããã²ãŒã¿ã€ãç²åãçæããã é žååå¿çµç¹ã¯ãåå¿æ¶²ã®äžéšãæãåãå¡©é ž
é žæ§ã«èª¿ç¯ããåŸãèµ€è¡å¡©æº¶æ¶²ãçšããŠFe2+ã®
éè²åè²åå¿ã®æç¡ã§å€å®ããã çæç²åã¯ãåžžæ³ã«ãããå¥ãæ°ŽæŽã也ç¥ã
ç²ç ããã ãã®Siãå«æããã²ãŒã¿ã€ãç²åç²æ«ã¯ãå³ïŒ
ã«ç€ºãé»åé¡åŸ®é¡åçïŒÃ20000ïŒããæãããª
éããå¹³åå€ã§é·è»ž0.43ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒ
ïŒïŒïŒã®çŽ¡éåãåããç²åãããªããç²åãå
æã§æš¹æç¶ç²åãæ··åšããªããã®ã§ãã€ãã ãŸãããã®çŽ¡éåãåããã²ãŒã¿ã€ãç²åç²æ«
ã¯ãè¢å ç·åæã®çµæãFeã«å¯ŸãSiã0.14åå
ïŒ å«æããŠããã å®æœäŸ ïŒã12 Fe2+氎溶液ã®çš®é¡ãçé žã¢ã«ã«ãªã®çš®é¡äžŠã³
ã«æ¿åºŠãæ°Žå¯æº¶æ§ã®ã±ã€é žå¡©ã®çš®é¡ãæ·»å é䞊ã³
ã«æ·»å ææãéå±ã€ãªã³ã®çš®é¡äžŠã³ã«éåã³æž©åºŠ
ãçš®ã å€åããã以å€ã¯ãå®æœäŸïŒãšåæ§ã«ããŠ
玡éåãåããã²ãŒã¿ã€ãç²åãçæããã ãã®æã®äž»èŠè£œé æ¡ä»¶åã³çæã²ãŒã¿ã€ãç²å
ç²æ«ã®ç¹æ§ãè¡šã«ç€ºãã å®æœäŸïŒåã³å®æœäŸïŒã§åŸããã玡éåãåã
ãã²ãŒã¿ã€ãç²åç²æ«ã®é»åé¡åŸ®é¡åçïŒÃ
20000ïŒãããããå³ïŒåã³å³ïŒã«ç€ºãã æ¯èŒäŸ ïŒ ã±ã€é žãœãŒããæ·»å ããªã以å€ã¯ãå®æœäŸïŒãš
åæ§ã«ããŠã²ãŒã¿ã€ãç²åç²æ«ãçæããã åŸãããã²ãŒã¿ã€ãç²åç²æ«ã¯ãå³ïŒã«ç€ºãé»
åé¡åŸ®é¡åçïŒÃ20000ïŒããæãããªéããå¹³
åå€ã§é·è»ž0.55ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒïŒïŒïŒ
ã§ãã€ãã ïŒçŽ¡éåãåããããã¿ã€ãç²åç²æ«ã®è£œé ïŒ å®æœäŸ 13 å®æœäŸïŒã§åŸãããSiãå«æãã玡éåãåã
ãã²ãŒã¿ã€ãç²åç²æ«1000ïœã空æ°äž300âã§å
ç±è±æ°ŽããŠSiãå«æãã玡éåãåããããã¿ã€
ãç²åç²æ«ãåŸãã ãã®ç²åã¯ãé»åé¡åŸ®é¡èŠ³å¯ã®çµæãå¹³åå€ã§
é·è»ž0.21ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒ1.8ïŒïŒã§ã
ããç²åºŠãåæã§æš¹æç¶ç²åãæ··åšããªããã®ã§
ãã€ãã ãŸããè¢å ç·åæã®çµæãFeã«å¯ŸãSiã0.35
ååïŒ å«æãããã®ã§ãã€ãã ïŒçŽ¡éåãåãããã°ãã¿ã€ãç²åç²æ«ã®è£œé ïŒ å®æœäŸ14ã26ãæ¯èŒäŸïŒ å®æœäŸ 14 å®æœäŸïŒã§åŸãããSiãå«æãã玡éåãåã
ãã²ãŒã¿ã€ãç²åç²æ«1000ïœã10ã®ã¬ãã«ãé
å 容åšäžã«æå ¥ããé§åå転ãããªããH2ã¬ã¹
ãæ¯åïŒã®å²åã§éæ°ããéå 枩床400âã§é
å ããŠSiãå«æãã玡éåãåãããã°ãã¿ã€ã
ç²åç²æ«ãåŸãã åŸãããSiãå«æãã玡éåãåãããã°ãã¿
ã€ãç²åç²æ«ã¯ãè¢å ç·åæã®çµæãFeã«å¯Ÿ
ãSiã0.13ååïŒ å«æããŠãããé»åé¡åŸ®é¡èŠ³å¯
ã®çµæãå¹³åå€ã§é·è»ž0.30ÎŒïœã軞æ¯ïŒé·è»žïŒç
軞ïŒ2.7ïŒïŒã§ãã€ãŠãç²åºŠãåæã§ãããæš¹æ
ç¶ç²åãæ··åšããªããã®ã§ãã€ãã ãŸããç£æ°æž¬å®ã®çµæãä¿ç£åHcã¯296Oeã
飜åç£åÏsã¯ã83.6emuïŒïœã§ãã€ãã å®æœäŸ15ã26ãæ¯èŒäŸïŒ åºçºåæã®çš®é¡ãéå 枩床ãçš®ã å€åããã以
å€ã¯å®æœäŸ14ãšåæ§ã«ããŠçŽ¡éåãåãããã°ã
ã¿ã€ãç²åç²æ«ãåŸãããã®æã®äž»èŠè£œé æ¡ä»¶å
ã³ç²åç²æ«ã®ç¹æ§ãè¡šïŒã«ç€ºãã å®æœäŸ15ã26ã§åŸããã玡éåãåãããã°ã
ã¿ã€ãç²åç²æ«ãããããé»åé¡åŸ®é¡èŠ³å¯ã®çµ
æãç²åºŠãåæã§ãããæš¹æç¶ç²åãæ··åšããªã
ãã®ã§ãã€ãã ïŒçŽ¡éåãåãããã°ããã€ãç²åç²æ«ã®è£œé ïŒ å®æœäŸ27ã36ãæ¯èŒäŸïŒ å®æœäŸ 27 å®æœäŸ16ã§åŸãããSiãå«æãã玡éåãåã
ããã°ãã¿ã€ãç²åç²æ«350ïœã空æ°äž300âã§60
åéé žåããŠSiãå«æãã玡éåãåãããã°ã
ãã€ãç²åç²æ«ãåŸãã åŸãããSiãå«æãã玡éåãåãããã°ãã
ã€ãç²åç²æ«ã¯ãè¢å ç·åæã®çµæãFeã«å¯Ÿ
ãSiã0.99ååïŒ ãå«æããŠãããé»åé¡åŸ®é¡èŠ³
å¯ã®çµæãé·è»ž0.20ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒ
1.3ïŒïŒã§ãã€ãŠãç²åºŠãåæã§ãããæš¹æç¶ç²
åãæ··åšããªããã®ã§ãã€ãããŸããç£æ°æž¬å®ã®
çµæãä¿ç£åHcã¯224Oeã飜åç£åÏsã¯ã
72.7emuïŒïœã§ãã€ãã å®æœäŸ28ã36ãæ¯èŒäŸïŒ 玡éåãåãããã°ãã¿ã€ãç²åç²æ«ã®çš®é¡ã
çš®ã å€åããã以å€ã¯ãå®æœäŸ27ãšåæ§ã«ããŠçŽ¡
éåãåãããã°ããã€ãç²åç²æ«ãåŸãã ãã®æã®äž»èŠè£œé æ¡ä»¶åã³ç²åç²æ«ã®ç¹æ§ãè¡š
ïŒã«ç€ºãã å®æœäŸ28ã36ã§åŸãããSiãå«æãã玡éåã
åãããã°ããã€ãç²åç²æ«ã¯ããããé»åé¡åŸ®
é¡èŠ³å¯ã®çµæãç²åºŠãåæã§ãããæš¹æç¶ç²åã
æ··åšããªããã®ã§ãã€ãã ïŒCoã§å€æããã玡éåãåãããã°ãã¿ã€ã
ç²åç²æ«ã®è£œé ïŒ å®æœäŸ37ã43ãæ¯èŒäŸïŒ å®æœäŸ 37 å®æœäŸ18ã§åŸãããSiãå«æããŠãã玡éåã
åãããã°ãã¿ã€ãç²åç²æ«100ïœãå¯åçã«ç©º
æ°ã®æ··å ¥ãé²æ¢ããªããç¡«é žã³ãã«ããšç¡«é žç¬¬äž
éãçšããã³ãã«ã0.085molãšç¬¬äžé0.179mol
ã溶åããŠãã1.0ã®æ°Žäžã«æå ¥ã埮现ãªã¹ã©
ãªãŒã«ãªããŸã§åæ£ããã次ãã§è©²åæ£æ¶²ã«18â
ã®NaOH氎溶液102mlã泚å ããæŽã«æ°Žãå ã
ãŠå šå®¹ã1.3ãšããŠOHåºæ¿åºŠ1.0molïŒã®åæ£
液ãšããã該åæ£æ¶²ã®æž©åºŠã100âã«ææž©ããã
ã®æž©åºŠã§æ¹æããªããïŒæéåŸã«ã¹ã©ãªãŒãåã
åºããæ°ŽæŽãéãã60âã§ä¹Ÿç¥ããŠãCoã§å€
æãããSiãå«æããŠãã玡éåãåãããã°ã
ã¿ã€ãç²åãåŸãã åŸãããç²åã¯ãé»åé¡åŸ®é¡èŠ³å¯ã®çµæãåé§
äœã§ããSiãå«æããŠãã玡éåãåãããã°ã
ã¿ã€ãç²åã®åœ¢ç¶ãç²åºŠãç¶æ¿ããŠãããé·è»ž
0.15ÎŒïœã軞æ¯ïŒé·è»žïŒç軞ïŒïŒïŒïŒã®çŽ¡éåã
åããç²åã§ãã€ãããŸããç£æ°æž¬å®ã®çµæãä¿
ç£åHcã¯ã654Oeã飜åç£åÏsã¯85.8emuïŒïœã§
ãã€ãŠãS.F.D.ã¯1.1ã§ãã€ãã該ç²åã¯ãSiã
SiïŒFeã§5.2ååïŒ ãã³ãã«ããCoïŒFeã§5.9å
åïŒ å«æããŠããã å®æœäŸ38ã43ãæ¯èŒäŸïŒ åé§äœã§ãã玡éåãåãããã°ãã¿ã€ãç²å
ã®éã100ïœãåŠçæ¶²å šå®¹éã1.3ãšããŠãåé§
äœã®çš®é¡ãã³ãã«ãæ·»å éãFe2+æ·»å éåã³
NaOHã®æ·»å éãçš®ã å€åããã以å€ã¯ãå®æœ
äŸ40ãšåæ§ã«ããŠCoåã¯CoãšFe2+ã§å€æããã
Siãå«æããŠãã玡éåãåãããã°ãã¿ã€ãç²
åãåŸãããã®äž»èŠè£œé æ¡ä»¶åã³ç¹æ§ãè¡šïŒã«ç€º
ãã å®æœäŸ39ãå®æœäŸ43åã³å®æœäŸ38ã§åŸããã
CoãšFe2+ã§å€æãããSiãå«æããŠãã玡éå
ãåãããã°ãã¿ã€ãç²åç²æ«ã®é»åé¡åŸ®é¡åç
ïŒÃ20000ïŒãããããå³ïŒä¹è³å³ïŒïŒã«ç€ºãã ïŒCoã§å€æããã玡éåãåãããã°ããã€ã
ç²åç²æ«ã®è£œé ïŒ å®æœäŸ44ã48ãæ¯èŒäŸïŒ å®æœäŸ 44 å®æœäŸ28ã§åŸãããSiãå«æããŠãã玡éåã
ãŠããããã°ããã€ãç²åç²æ«100ïœãå¯åçã«
空æ°ã®æ··å ¥ãé²æ¢ããªããç¡«é žã³ãã«ããšç¡«é žç¬¬
äžéãçšããã³ãã«ã0.102molãšç¬¬äžé
0.215molã溶åããŠãã1.0ã®æ°Žäžã«æå ¥ãã
埮现ãªã¹ã©ãªãŒã«ãªããŸã§åæ£ããã次ãã§è©²å
æ£æ¶²ã«18âã®NaOH溶液107mlã泚å ããæŽã«
æ°Žãå ããŠå šå®¹ã1.3ãšããŠOHåºæ¿åºŠ1.0molïŒ
ã®åæ£æ¶²ãšããã該åæ£æ¶²ã®æž©åºŠã60âã«ææž©
ãããã®æž©åºŠã§æ¹æããªããïŒæéåŸã«ã¹ã©ãªãŒ
ãåãåºããæ°ŽæŽãå¥ãã60âã§ä¹Ÿç¥ããŠCo
ã§å€æãããSiãå«æããŠãã玡éåãåããã
ã°ããã€ãç²åãåŸãã åŸãããç²åã¯ãé»åé¡åŸ®é¡èŠ³å¯ã®çµæãåé§
äœã§ããSiãå«æããŠãã玡éåãåãããã°ã
ãã€ãç²åã®åœ¢ç¶ãç²åºŠãç¶æ¿ããŠãããé·è»ž
0.21ÎŒïœã軞æ¯1.1ïŒïŒã®ç²åã§ãã€ãããŸããç£
æ°æž¬å®ã®çµæãä¿ç£åHcã¯550Oeã飜åç£åÏs
ã¯73.5emuïŒïœã§ãã€ãŠãS.F.D.ã¯1.2ã§ãã€ãã
該ç²åã¯ãSiãSiïŒFeã§2.50ååïŒ ãCoãCoïŒ
Feã§7.0ååïŒ å«æããŠããã å®æœäŸ45ã48ãæ¯èŒäŸïŒ åé§äœã§ãã玡éåãåãããã°ããã€ãç²å
ã®éã100ïœãåŠçæ¶²å šå®¹éã1.3ãšããŠãåé§
äœã®çš®é¡ãCoæ·»å éãFe2+æ·»å éãNaOH氎溶
液ã®æ·»å éã枩床ãæéãçš®ã å€åããã以å€
ã¯ãå®æœäŸ47ãšå šãåæ§ã«ããŠCoåã¯CoãšFe2+
ã§å€æãããSiãå«æããŠãã玡éåãåããã
ã°ããã€ãç²åãåŸãããã®äž»èŠè£œé æ¡ä»¶åã³ç¹
æ§ãè¡šïŒã«ç€ºãã å®æœäŸ46ã§åŸãããCoãšFe2+ã§å€æãããSi
ãå«æããŠãã玡éåãåãããã°ãã¿ã€ãç²å
ç²æ«ã®é»åé¡åŸ®é¡åçïŒÃ20000ïŒãå³ïŒïŒã«ç€º
ãã ïŒç£æ°ããŒãã®è£œé ïŒ å®æœäŸ49ã60ãæ¯èŒäŸïŒãïŒ å®æœäŸ 49 å®æœäŸ37ã§åŸãããCoã§å€æãããSiãå«æ
ããŠãã玡éåãåãããã°ãã¿ã€ãç²åç²æ«ã
çšããŠãé©éã®åæ£å€ãå¡©ãé ¢ãå ±éåäœãç±å¯
å¡æ§ããªãŠã¬ã¿ã³æš¹èåã³ãã«ãšã³ãã¡ãã«ãšã
ã«ã±ãã³ãã¡ãã«ã€ãœããã«ã±ãã³ãããªãæ··å
溶å€ãäžå®ã®çµæã«é åããåŸãããŒã«ãã«ã§ïŒ
æéæ··ååæ£ããŠç£æ°å¡æãšããã åŸãããç£æ°å¡æã«äžèšæ··å溶å€ãå ãé©æ£ãª
å¡æç²åºŠã«ãªãããã«èª¿æŽããããªãšã¹ãã«æš¹è
ãã€ã«ã äžã«éåžžã®æ¹æ³ã§å¡åžä¹Ÿç¥ãããŠãç£æ°
ããŒãã補é ããã ãã®ç£æ°ããŒãã®S.F.D.ã¯0.95ä¿ç£åHcã¯
645Oeãæ®çç£æå¯åºŠBrã¯1150Gaussãè§åBrïŒ
Bmã¯0.60ã§ãã€ãã å®æœäŸ50ã60ãæ¯èŒäŸïŒãïŒ ç£æ§ç²åç²æ«ã®çš®é¡ãçš®ã å€åãã以å€ã¯ãå®
æœäŸ49ãšå šãåæ§ã«ããŠç£æ°ããŒãã補é ããã ãã®ç£æ°ããŒãã®è«žç¹æ§ãè¡šïŒã«ç€ºãã
ãè¡šã
ãè¡šã
ãè¡šã
ãè¡šã
ãè¡šã
ãè¡šã
æ¬çºæã«ä¿ãç£æ§é
žåéç²åç²æ«ã¯ãååºå®æœ
äŸã«ç€ºããéããç²åºŠãåæã§ãããæš¹æç¶ç²å
ãæ··åšããŠããããäžã€ã軞æ¯ïŒé·è»žïŒç軞ïŒã
å°ãããïŒïŒïŒä»¥äžãæ®ã«ïŒïŒïŒä»¥äžã§ãã€ãŠã
ãããé«ãä¿ç£åãšåªããä¿ç£åååžãæãã玡
éåãåãããã°ãã¿ã€ãç²ååã¯ãã°ããã€ã
ç²åã§ãããããçŸåšãæãèŠæ±ãããŠããé«æ§
èœãé«èšé²å¯åºŠçšç£æ§ææãšããŠå¥œé©ã§ããã ãŸããç£æ§å¡æã®è£œé ã«éããŠãäžèšãã°ãã¿
ã€ãç²åç²æ«åã¯ãã°ããã€ãç²åç²æ«ãçšãã
å Žåã«ã¯ãããŒã¯ã«ãžã®åæ£æ§ãè¯å¥œã§ãããå¡
èäžã§ã®é åæ§åã³å å¡«æ§ã極ããŠåªãã奜ãŸã
ãç£æ°èšé²åªäœãåŸãããšãã§ããã
äŸã«ç€ºããéããç²åºŠãåæã§ãããæš¹æç¶ç²å
ãæ··åšããŠããããäžã€ã軞æ¯ïŒé·è»žïŒç軞ïŒã
å°ãããïŒïŒïŒä»¥äžãæ®ã«ïŒïŒïŒä»¥äžã§ãã€ãŠã
ãããé«ãä¿ç£åãšåªããä¿ç£åååžãæãã玡
éåãåãããã°ãã¿ã€ãç²ååã¯ãã°ããã€ã
ç²åã§ãããããçŸåšãæãèŠæ±ãããŠããé«æ§
èœãé«èšé²å¯åºŠçšç£æ§ææãšããŠå¥œé©ã§ããã ãŸããç£æ§å¡æã®è£œé ã«éããŠãäžèšãã°ãã¿
ã€ãç²åç²æ«åã¯ãã°ããã€ãç²åç²æ«ãçšãã
å Žåã«ã¯ãããŒã¯ã«ãžã®åæ£æ§ãè¯å¥œã§ãããå¡
èäžã§ã®é åæ§åã³å å¡«æ§ã極ããŠåªãã奜ãŸã
ãç£æ°èšé²åªäœãåŸãããšãã§ããã
å³ïŒã¯ãæ°Žå¯æº¶æ§ã±ã€é
žå¡©ã®æ·»å éãšSiãå«æ
ãã玡éåãåããã²ãŒã¿ã€ãç²åç²æ«ã®è»žæ¯ã®
é¢ä¿å³ã§ãããå³ïŒåã³å³ïŒã¯ããããããæ°Žå¯
溶æ§ã±ã€é žå¡©ã®æ·»å éãšSiãå«æãã玡éåãå
ããç£æ§é žåéç²åç²æ«ã®è»žæ¯ãšã®é¢ä¿å³ã§ã
ããå³ïŒããã°ãã¿ã€ãç²åç²æ«ã®å Žåãå³ïŒã
ãã°ããã€ãç²åç²æ«ã®å Žåã§ãããå³ïŒã¯ã
Coã§å€æãããSiãå«æãã玡éåãåããã
ã°ããã€ãç²åç²æ«ã®S.F.D.ãšSiå«æéãšã®é¢ä¿
ã瀺ãããã®ã§ãããå³ïŒä¹è³å³ïŒïŒã¯ãããã
ãç²åã®ç²åæ§é ã瀺ããé»åé¡åŸ®é¡åçïŒÃ
20000ïŒã§ãããå³ïŒä¹è³å³ïŒã¯ãããããå®æœ
äŸïŒãå®æœäŸïŒåã³å®æœäŸïŒã§åŸãããSiãå«æ
ãã玡éåãåããã²ãŒã¿ã€ãç²åç²æ«ã§ããã
å³ïŒã¯ãæ¯èŒäŸïŒã§åŸãããSiãå«æããªã玡é
åãåããã²ãŒã¿ã€ãç²åç²æ«ã§ãããå³ïŒä¹è³
å³ïŒïŒã¯ãããããå®æœäŸ39ãå®æœäŸ43åã³å®æœ
äŸ38ã§åŸãããCoãšFe2+ã§å€æãããSiãå«æ
ãã玡éåãåãããã°ãã¿ã€ãç²åç²æ«ã§ã
ããå³ïŒïŒã¯ãå®æœäŸ46ã§åŸãããCoãšFe2+ã§
å€æãããSiãå«æãã玡éåãåãããã°ãã
ã€ãç²åç²æ«ã§ããã
ãã玡éåãåããã²ãŒã¿ã€ãç²åç²æ«ã®è»žæ¯ã®
é¢ä¿å³ã§ãããå³ïŒåã³å³ïŒã¯ããããããæ°Žå¯
溶æ§ã±ã€é žå¡©ã®æ·»å éãšSiãå«æãã玡éåãå
ããç£æ§é žåéç²åç²æ«ã®è»žæ¯ãšã®é¢ä¿å³ã§ã
ããå³ïŒããã°ãã¿ã€ãç²åç²æ«ã®å Žåãå³ïŒã
ãã°ããã€ãç²åç²æ«ã®å Žåã§ãããå³ïŒã¯ã
Coã§å€æãããSiãå«æãã玡éåãåããã
ã°ããã€ãç²åç²æ«ã®S.F.D.ãšSiå«æéãšã®é¢ä¿
ã瀺ãããã®ã§ãããå³ïŒä¹è³å³ïŒïŒã¯ãããã
ãç²åã®ç²åæ§é ã瀺ããé»åé¡åŸ®é¡åçïŒÃ
20000ïŒã§ãããå³ïŒä¹è³å³ïŒã¯ãããããå®æœ
äŸïŒãå®æœäŸïŒåã³å®æœäŸïŒã§åŸãããSiãå«æ
ãã玡éåãåããã²ãŒã¿ã€ãç²åç²æ«ã§ããã
å³ïŒã¯ãæ¯èŒäŸïŒã§åŸãããSiãå«æããªã玡é
åãåããã²ãŒã¿ã€ãç²åç²æ«ã§ãããå³ïŒä¹è³
å³ïŒïŒã¯ãããããå®æœäŸ39ãå®æœäŸ43åã³å®æœ
äŸ38ã§åŸãããCoãšFe2+ã§å€æãããSiãå«æ
ãã玡éåãåãããã°ãã¿ã€ãç²åç²æ«ã§ã
ããå³ïŒïŒã¯ãå®æœäŸ46ã§åŸãããCoãšFe2+ã§
å€æãããSiãå«æãã玡éåãåãããã°ãã
ã€ãç²åç²æ«ã§ããã
Claims (1)
- ãç¹èš±è«æ±ã®ç¯å²ã ïŒ SiãFeã«å¯Ÿã0.1ã20ååïŒ å«æã軞æ¯ïŒé·
軞ïŒç軞ïŒãïŒïŒïŒä»¥äžã§ãã€ãŠãç²åè¡šé¢ã
Feã«å¯Ÿã0.5ã15.0ååïŒ ã®Coã§å€æãããŠããã
äžã€ãä¿ç£åååžãS.F.D.ã§1.5以äžã§ããããš
ãç¹åŸŽãšãã玡éåãåãããã°ãã¿ã€ãç²åã
ããªãç£æ§é žåéç²åç²æ«ã ïŒ SiãFeã«å¯Ÿã0.3ã15ååïŒ å«æã軞æ¯ïŒé·
軞ïŒç軞ïŒãïŒïŒïŒä»¥äžã§ãã€ãŠãç²åè¡šé¢ã
Feã«å¯Ÿã0.5ã15.0ååïŒ ã®Coã§å€æãããŠããã
äžã€ãä¿ç£åååžãS.F.D.ã§1.4以äžã§ããç¹èš±
è«æ±ã®ç¯å²ç¬¬ïŒé èšèŒã®çŽ¡éåãåãããã°ãã¿
ã€ãç²åãããªãç£æ§é žåéç²åç²æ«ã ïŒ SiãFeã«å¯Ÿã0.87ã7.7ååïŒ å«æã軞æ¯
ïŒé·è»žïŒç軞ïŒã1.3ïŒïŒä»¥äžã§ãã€ãŠãç²åè¡šé¢
ãFeã«å¯Ÿã0.5ã15.0ååïŒ ã®Coã§å€æãããŠã
ããäžã€ãä¿ç£åååžãS.F.D.ã§1.5以äžã§ãã
ããšãç¹åŸŽãšãã玡éåãåãããã°ããã€ãç²
åãããªãç£æ§é žåéç²åç²æ«ã ïŒ ç¬¬äžé塩氎溶液ãšçé žã¢ã«ã«ãªãšãåå¿ãã
ãŠåŸãããFeCO3ãå«ã氎溶液ã«é žçŽ å«æã¬ã¹ã
éæ°ããŠé žåããããšã«ãã玡éåãåããã²ãŒ
ã¿ã€ãç²åãçæãããã«ããããåèšç¬¬äžéå¡©
氎溶液ãåèšçé žã¢ã«ã«ãªåã³é žçŽ å«æã¬ã¹ãé
æ°ããŠé žååå¿ãè¡ãããåã®åèšFeCO3ãå«ã
氎溶液ã®ããããã«ãæ°Žå¯æº¶æ§ã±ã€é žå¡©ãFeã«
察ãSiæç®ã§0.1ã20ååïŒ æ·»å ããŠããããšã«
ãããSiãå«æãã玡éåãåããã²ãŒã¿ã€ãç²
åãçæããã該Siãå«æãã玡éåãåããã²
ãŒã¿ã€ãç²åè¥ããã¯ãããå ç±è±æ°ŽããSiãå«
æãã玡éåãåããããã¿ã€ãç²åãéå æ§ã¬
ã¹äžã§å ç±éå ããŠåŸããã玡éåãåãããã°
ãã¿ã€ãç²åãåé§äœç²åãšããŠçšãã該ååäœ
ç²åã®Feã«å¯Ÿã0.5ã15.0ååïŒ ã®Coãå«ããã
ã«ãäžèšåé§äœç²åãæ°Žé žåã³ãã«ãåã¯æ°Žé žå
ã³ãã«ããšæ°Žé žå第äžéãå«ãã¢ã«ã«ãªæžæ¿æ¶²äž
ã«åæ£ããã該åæ£æ¶²ãéé žåæ§é°å²æ°äžã50ã
100âã®æž©åºŠç¯å²ã§å ç±åŠçããããšã«ããCoå
ã¯CoãšFe2+ã§å€æãããSiãå«æãã玡éåã
åãããã°ãã¿ã€ãç²åãåŸãããšãç¹åŸŽãšãã
玡éåãåãããã°ãã¿ã€ãç²åãããªãç£æ§é ž
åéç²åç²æ«ã®è£œé æ³ã ïŒ æ°Žå¯æº¶æ§ã±ã€é žå¡©ã®æ·»å éãFeã«å¯ŸãSiæ
ç®ã§0.3ã15ååïŒ ã§ããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé
èšèŒã®çŽ¡éåãåãããã°ãã¿ã€ãç²åãããªã
ç£æ§é žåéç²åç²æ«ã®è£œé æ³ã
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60042387A JPS61201626A (ja) | 1985-03-02 | 1985-03-02 | 玡éåãåããç£æ§é žåéç²åç²æ«åã³ãã®è£œé æ³ |
EP85302834A EP0160496B1 (en) | 1984-04-28 | 1985-04-23 | Magnetic iron oxide particles |
DE8585302834T DE3573039D1 (en) | 1984-04-28 | 1985-04-23 | Magnetic iron oxide particles |
US07/039,775 US4873010A (en) | 1984-04-28 | 1987-04-15 | Spindle-like magnetic iron oxide particles and process for producing the same |
JP5121856A JPH0774081B2 (ja) | 1985-03-02 | 1993-03-22 | 玡éåãåããç£æ§é žåéç²åç²æ«ã®è£œé æ³ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60042387A JPS61201626A (ja) | 1985-03-02 | 1985-03-02 | 玡éåãåããç£æ§é žåéç²åç²æ«åã³ãã®è£œé æ³ |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5121856A Division JPH0774081B2 (ja) | 1985-03-02 | 1993-03-22 | 玡éåãåããç£æ§é žåéç²åç²æ«ã®è£œé æ³ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61201626A JPS61201626A (ja) | 1986-09-06 |
JPH0580414B2 true JPH0580414B2 (ja) | 1993-11-09 |
Family
ID=12634655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60042387A Granted JPS61201626A (ja) | 1984-04-28 | 1985-03-02 | 玡éåãåããç£æ§é žåéç²åç²æ«åã³ãã®è£œé æ³ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61201626A (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6790531B2 (ja) * | 2016-07-12 | 2020-11-25 | Tdkæ ªåŒäŒç€Ÿ | è»ç£æ§éå±ç²æ«ããã³å§ç²ç£å¿ |
-
1985
- 1985-03-02 JP JP60042387A patent/JPS61201626A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS61201626A (ja) | 1986-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4873010A (en) | Spindle-like magnetic iron oxide particles and process for producing the same | |
JP2937211B2 (ja) | éç¶ç£æ§é žåéç²åç²æ«ã®è£œé æ³ | |
JPS60138002A (ja) | 玡éåãåããéãäž»æåãšããéå±ç£æ§ç²åç²æ«åã³ãã®è£œé æ³ | |
JPH0580414B2 (ja) | ||
JPH107420A (ja) | ã³ãã«ã被çåéç¶ç£æ§é žåéç²åç²æ« | |
JPH0774081B2 (ja) | 玡éåãåããç£æ§é žåéç²åç²æ«ã®è£œé æ³ | |
JP3055308B2 (ja) | éç¶ç£æ§é žåéç²åç²æ«ã®è£œé æ³ | |
JPS62158801A (ja) | 玡é圢ç¶ãåããéãäž»æåãšããéå±ç£æ§ç²åç²æ«åã³ãã®è£œé æ³ | |
JPH0120201B2 (ja) | ||
JPH0371378B2 (ja) | ||
JP3171223B2 (ja) | éç¶ç£æ§ç²åç²æ«ã®è£œé æ³ | |
JP3166809B2 (ja) | éç¶ç£æ§é žåéç²åç²æ«ã®è£œé æ³ | |
JPS6313941B2 (ja) | ||
JP2897794B2 (ja) | ã³ãã«ã被çåç£æ§é žåéç²åç²æ«ã®è£œé æ³ | |
JP3095041B2 (ja) | éãäž»æåãšããéç¶éå±ç£æ§ç²åç²æ«ã®è£œé æ³ | |
JP2970699B2 (ja) | éç¶ç£æ§é žåéç²åç²æ«ã®è£œé æ³ | |
JP2883962B2 (ja) | éç¶ã²ãŒã¿ã€ãç²åç²æ«ã®è£œé æ³ | |
JPS6313943B2 (ja) | ||
JPS6313936B2 (ja) | ||
JP3095042B2 (ja) | éãäž»æåãšããéç¶éå±ç£æ§ç²åç²æ«ã®è£œé æ³ | |
JPH026801B2 (ja) | ||
JPS62128931A (ja) | 玡éåãåããç£æ§é žåéç²åç²æ«ã®è£œé æ³ | |
JPS62128926A (ja) | 玡éåãåããç£æ§é žåéç²åç²æ«ã®è£œé æ³ | |
JPH0755827B2 (ja) | 玡é圢ãåããéãäž»æåãšããéå±ç£æ§ç²åç²æ«ã®è£œé æ³ | |
JPH0619082B2 (ja) | 玡éåãåããéãäž»æåãšããéå±ç£æ§ç²åç²æ«åã³ãã®è£œé æ³ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |