DE1802469A1 - Verfahren zur Herstellung von ferromagnetischem Chromdioxid - Google Patents
Verfahren zur Herstellung von ferromagnetischem ChromdioxidInfo
- Publication number
- DE1802469A1 DE1802469A1 DE19681802469 DE1802469A DE1802469A1 DE 1802469 A1 DE1802469 A1 DE 1802469A1 DE 19681802469 DE19681802469 DE 19681802469 DE 1802469 A DE1802469 A DE 1802469A DE 1802469 A1 DE1802469 A1 DE 1802469A1
- Authority
- DE
- Germany
- Prior art keywords
- stage
- product
- chromium
- chromic acid
- modifier
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 20
- 229940090961 chromium dioxide Drugs 0.000 title claims description 12
- IAQWMWUKBQPOIY-UHFFFAOYSA-N chromium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Cr+4] IAQWMWUKBQPOIY-UHFFFAOYSA-N 0.000 title claims description 12
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium(IV) oxide Inorganic materials O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 title claims description 12
- 230000005294 ferromagnetic effect Effects 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 17
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 17
- 239000003607 modifier Substances 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 10
- 239000011651 chromium Substances 0.000 claims description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 229910052787 antimony Inorganic materials 0.000 claims description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052714 tellurium Inorganic materials 0.000 claims description 4
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000010335 hydrothermal treatment Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000005291 magnetic effect Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 kuthenium Chemical compound 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000005500 nucleating phase Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70636—CrO2
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/02—Oxides or hydrates thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Magnetic Record Carriers (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681802469 DE1802469A1 (de) | 1968-10-11 | 1968-10-11 | Verfahren zur Herstellung von ferromagnetischem Chromdioxid |
| CH1492669A CH522567A (de) | 1968-10-11 | 1969-10-03 | Verfahren zur Herstellung von ferromagnetischem Chromdioxid |
| GB4913769A GB1287614A (en) | 1968-10-11 | 1969-10-07 | Process for the preparation of ferromagnetic chromium dioxide |
| FR6934842A FR2020441B1 (enExample) | 1968-10-11 | 1969-10-10 | |
| SE13980/69A SE365492B (enExample) | 1968-10-11 | 1969-10-10 | |
| BE740103D BE740103A (enExample) | 1968-10-11 | 1969-10-10 | |
| NL6915398A NL6915398A (enExample) | 1968-10-11 | 1969-10-10 | |
| JP44081035A JPS4840799B1 (enExample) | 1968-10-11 | 1969-10-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681802469 DE1802469A1 (de) | 1968-10-11 | 1968-10-11 | Verfahren zur Herstellung von ferromagnetischem Chromdioxid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1802469A1 true DE1802469A1 (de) | 1971-10-28 |
Family
ID=5710250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19681802469 Pending DE1802469A1 (de) | 1968-10-11 | 1968-10-11 | Verfahren zur Herstellung von ferromagnetischem Chromdioxid |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS4840799B1 (enExample) |
| BE (1) | BE740103A (enExample) |
| CH (1) | CH522567A (enExample) |
| DE (1) | DE1802469A1 (enExample) |
| FR (1) | FR2020441B1 (enExample) |
| GB (1) | GB1287614A (enExample) |
| NL (1) | NL6915398A (enExample) |
| SE (1) | SE365492B (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1244457B (de) * | 1963-01-04 | 1967-07-13 | Ernst Zimlich | Motorisch angetriebener Rasenmaeher mit waagerecht umlaufendem Messer |
| DE2648305A1 (de) * | 1975-10-31 | 1977-05-12 | Montedison Spa | Verfahren zur herstellung von ferromagnetischem chromdioxid |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2022820C3 (de) * | 1970-05-11 | 1980-01-03 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von hochkoerzitivem Chromdioxid |
| CN115188918A (zh) * | 2022-04-13 | 2022-10-14 | 武汉中原长江科技发展有限公司 | 一种添加活化剂的铬氧化物复合材料及其制备方法与应用 |
-
1968
- 1968-10-11 DE DE19681802469 patent/DE1802469A1/de active Pending
-
1969
- 1969-10-03 CH CH1492669A patent/CH522567A/de not_active IP Right Cessation
- 1969-10-07 GB GB4913769A patent/GB1287614A/en not_active Expired
- 1969-10-10 BE BE740103D patent/BE740103A/xx unknown
- 1969-10-10 FR FR6934842A patent/FR2020441B1/fr not_active Expired
- 1969-10-10 NL NL6915398A patent/NL6915398A/xx unknown
- 1969-10-10 SE SE13980/69A patent/SE365492B/xx unknown
- 1969-10-11 JP JP44081035A patent/JPS4840799B1/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1244457B (de) * | 1963-01-04 | 1967-07-13 | Ernst Zimlich | Motorisch angetriebener Rasenmaeher mit waagerecht umlaufendem Messer |
| DE2648305A1 (de) * | 1975-10-31 | 1977-05-12 | Montedison Spa | Verfahren zur herstellung von ferromagnetischem chromdioxid |
Also Published As
| Publication number | Publication date |
|---|---|
| SE365492B (enExample) | 1974-03-25 |
| FR2020441B1 (enExample) | 1973-12-07 |
| JPS4840799B1 (enExample) | 1973-12-03 |
| CH522567A (de) | 1972-06-30 |
| FR2020441A1 (enExample) | 1970-07-10 |
| NL6915398A (enExample) | 1970-04-14 |
| BE740103A (enExample) | 1970-04-10 |
| GB1287614A (en) | 1972-09-06 |
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