WO2005099936A1 - タンタル粉末およびこれを用いた固体電解コンデンサ - Google Patents
タンタル粉末およびこれを用いた固体電解コンデンサ Download PDFInfo
- Publication number
- WO2005099936A1 WO2005099936A1 PCT/JP2005/007376 JP2005007376W WO2005099936A1 WO 2005099936 A1 WO2005099936 A1 WO 2005099936A1 JP 2005007376 W JP2005007376 W JP 2005007376W WO 2005099936 A1 WO2005099936 A1 WO 2005099936A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tantalum
- powder
- capacitor
- bulk density
- solid
- Prior art date
Links
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000003990 capacitor Substances 0.000 title claims abstract description 52
- 239000007787 solid Substances 0.000 title abstract description 23
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 52
- 239000000843 powder Substances 0.000 description 44
- 238000000034 method Methods 0.000 description 26
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 11
- 230000003068 static effect Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 229910052786 argon Inorganic materials 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000000835 fiber Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 241000283690 Bos taurus Species 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000010405 anode material Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004438 BET method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- LLQHSBBZNDXTIV-UHFFFAOYSA-N 6-[5-[[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]methyl]-4,5-dihydro-1,2-oxazol-3-yl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC1CC(=NO1)C1=CC2=C(NC(O2)=O)C=C1 LLQHSBBZNDXTIV-UHFFFAOYSA-N 0.000 description 1
- 241000723346 Cinnamomum camphora Species 0.000 description 1
- 241000252185 Cobitidae Species 0.000 description 1
- 241000519695 Ilex integra Species 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
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 101150107341 RERE gene Proteins 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 241000219094 Vitaceae Species 0.000 description 1
- RIKSBPAXKLQKOR-UHFFFAOYSA-M [O-2].O[Ta+4].[O-2] Chemical compound [O-2].O[Ta+4].[O-2] RIKSBPAXKLQKOR-UHFFFAOYSA-M 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000021021 grapes Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 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
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 150000003482 tantalum compounds Chemical class 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- YRGLXIVYESZPLQ-UHFFFAOYSA-I tantalum pentafluoride Chemical compound F[Ta](F)(F)(F)F YRGLXIVYESZPLQ-UHFFFAOYSA-I 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
- OEIMLTQPLAGXMX-UHFFFAOYSA-I tantalum(v) chloride Chemical compound Cl[Ta](Cl)(Cl)(Cl)Cl OEIMLTQPLAGXMX-UHFFFAOYSA-I 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/052—Sintered electrodes
- H01G9/0525—Powder therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/045—Alloys based on refractory metals
Definitions
- the present invention relates to a tantalum powder (tantalum powder) suitable for an anode ⁇ ® ⁇ material (anode material) of a solid electrolyte capacitor, and a capacitor anode in which the end is ⁇ / tied. (anode) and a solid electrolytic capacitor using the anode. Background ...
- ⁇ S powder suitably used for the anode material of solid-state capacitors include tantalum, niobium, titanium, tungsten, molybdenum, and the like.
- the tantalum-free ⁇ ffl fixed ⁇ 3 ⁇ 4 capacitor has a low ESR, large force and large capacitance, and it has a large capacity such as ce 11 phone and personal computer.
- 2002-028033 discloses that a method for manufacturing a tantalum composite for The tantalum obtained by the prize reduction is inactivated.
- I 1 The bulk density obtained by milling after heating at 1000-1500 ° C under an inert atmosphere is 0.50-1.85 g. It is disclosed that shelters tantalum powder of / cm 3 .
- the BET specific surface area of the reduced tantano powder obtained by the above procedure is 0.8 to 4 m2 / g. ing.
- Conventional tantalums and powders at the end are only 4m 2 / g at most, and the invention is disclosed.
- the present invention provides a tantalum having a bulk density of 0.1 to 1.0 gZcm 3 and a specific ratio of more than 4 m 2 / g to 10 m 2 Zg or less.
- the specific surface area of the present invention is based on a ratio table measured by the ⁇ method.
- the present invention further provides an anode for a solid-state capacitor using the tantalum / powder of the present invention, and a solid-state capacitor for storing the anode.
- the tantalum of the present invention has a bulk density of 0.1 to 1.0 g / cm 3 and a power ratio table of more than 4 m 2 Zg and 1 Om 2 / g or less.
- the amount of experimentation is large and the power leakage can be reduced at the age when the final i ⁇ -condensate is used as the anode of a solid ⁇ ft ⁇ capacitor.
- the solid capacitor of the present invention using the tantano Wj ⁇ powder at the end thereof as an anode is a so-called solid capacitor having a large amount of separation and a small force leakage.
- the fixed capacitor of the present invention has a large amount of static electricity, it can be more preferably used as a capacitor of (e), and it can be greatly reduced to ( ⁇ ) Contribute.
- Figure 1 ⁇ : cross section of a solid star capacitor.
- Figure 2 A graph showing the change over time of leakage. Best mode for making invention
- the solid tantalum capacitor is made by slicing the tantalum / V ⁇ and then applying the anodic oxidation to the surface and applying a dielectric oxide film on the surface. Therefore, the capacitance of the tantalum solid electrolytic capacitor is hidden by Tantano V3 ⁇ 4 and the end of the table, and the larger the specific surface area, the larger the capacitance of the capacitor becomes.
- the present inventors have found that, when the ratio of tantano W3 ⁇ 4 and powder is large, depending on the difference in bulk density of tanta powder at the time of forming a compact, a large static amount and leakage can be obtained.
- the present inventors have found that it is impossible to obtain a capacitor having a low f £ (leakage current), and have been working diligently to solve the above-mentioned problem.
- a low leakage current and a tantalum powder for a solid-state capacitor can be obtained, and made the present invention.
- the BET specific surface area exceeds 4 m 2 Zg, the trend is remarkable.
- the inventors of the present invention aim to obtain a tantalum solid capacitor having a large capacitance, a small leakage current, and a small capacitance when a tantalum / powder is placed as an anode of a solid-state fast capacitor. .
- tantalum powder having a large specific surface area, and its use, a capacitor for a solid-state dynamic capacitor, and the like. ⁇ It is assumed that the capacitor is ⁇ ".
- the present inventors have conducted eager magnetism to achieve the above object. As a result, the ratio of tanta / one-minute mixture was large, the age, and the bulk density of tantano ⁇ powder were properly adjusted. Thus, the present invention was applied to the use of such a capacitor, and it was found that the amount of leakage of the fixed * ⁇ ® capacitor could be greatly reduced and the haze could be reduced.
- tantalum ⁇ 3 ⁇ 4 of the present invention youngest specific surface ®3 ⁇ 4: 4 m 2 / g Choriki et al 1 0 m 2 Z g or less
- the ratio of the orchid is more than A mg to 10 m 2 Zg or less.
- the ratio table of the present invention is:
- the tantalum powder of the present invention needs to have a bulk density of 0.1 to 1.0 g / cm 3 in addition to the above ratio table.
- the bulk density means a value measured by the JISZ-254 method.
- the bulk density of Tantano W3 ⁇ 4, powder is more preferably 0.3 to 1.0 Og / cm 3 .
- the specific surface area is less than 4 m 2 Zg, defects are likely to occur in the dielectric oxide, so that the effect of reducing the leakage of the solid electrolytic capacitor is not conspicuously exhibited, and the obtained solid conversion capacitor has The amount of separation should not be large enough.
- the ratio table is more than 10 m 2 / g, the surface activity of tantalum and powder becomes extremely high, and there is a risk of ignition, so that handling becomes difficult.
- the particle size of the powder may be too small to serve as the anode of a solid capacitor. In other words, the age at which the shelf is used as the anode of a solid state capacitor
- the ratio table of tanta A3 ⁇ 4 powder is more preferably 4 to 8.5 m 2 / g. More preferably, 4. a 5 ⁇ 8. O m 2 / g.
- the tanta / powder is often a bunch of grapes, or a secondary aggregate of particles of each other, like a bunch. Therefore, in order to make the present invention suitable for women, the tantalum of the present invention preferably has a diameter in the range of 311111 to 911111 in terms of a BET-equivalent diameter (determined from the BET ratio table). I like it.
- the secondary particles are preferably from 20 nm to 150 nm when viewed under an electron microscope ⁇ SEM (scanning electron microscope). The above ⁇ is specified because the chemical conversion process becomes so acidic that it no longer contributes to the capacity.
- the tantalum powder can be widely manufactured and removed.
- the fantastic table is Tantano W3 ⁇ 4 of 4 to 10 m 2 / g and powder.
- the treatment includes sodium reduction method of tantalum fluoride / ream, magnesium method of tantalum oxide, and water method of tantalum 553 ⁇ 4 (gas phase hydrogen reduction process). , And tantalum ⁇ ⁇ dust removal.
- the above-mentioned production methods include those in which it is difficult to produce tantalum powder having a ratio table of more than 4 m 2 Zg.
- the magnesium reduction method of tantalum arsenide involves a step of heating to a high temperature of 800 ° C. or more, and since tantalum, which is capable of producing debris, has a high ⁇ content, it can be used under a humid atmosphere. This involves heat treatment at a temperature of at least 100 ° C. For this reason, it is difficult to obtain a tantalum / V powder having a specific surface area of 4 m 2 Z g or more.
- the tantalum borohydride hydrogen method is preferable among the above-mentioned processes.
- the eye hydrogen reduction method of 33 ⁇ 4 tantalum, plasma CV D (plasma chemical vapor deposition) method ⁇ is, into an argon plasma, introducing ⁇ 3 ⁇ 4 hardness rental and hydrogen in the argon plasma ⁇ : Eye hydrogen reduction ®S is a male who obtains tantalum powder.
- the ratio of tantano! ⁇ powder obtained by the plasma CVD method can be controlled by adjusting the flow rate of argon gas for plasma, the flow rate of hydrogen gas for reduction, and the amount of tantano trioxide added.
- the cake th optimization tantalum The tanta obtained by the hydrogen reduction method can be used to control the final iit.
- the bulk density is easy to prepare, and it is preferable that the desired bulk density is obtained by pulverizing the tantano and powder obtained by the method 3): Tantalum bubbling method.
- the method of grinding the tantalum and powder is not particularly limited, and agate! , Or each @ ⁇ stone right, m may be included. With these methods, while measuring the bulk density on the way, the tantano powder and the powder are pulverized and crushed until a desired bulk density is obtained.
- FIG. 1 shows a plan view of the fixed shelf capacitor.
- the solid-state condenser 10 has a tantanole composite i i, an oxidized tantanore 12, a solid-state substance 13, a graphite 14 and a silver 15-strength S-type.
- binder On the 1st stage, add 3-5% by mass of binder to the Tantano V # powder obtained above and mix thoroughly. After mixing thoroughly, length 2.4mm, width 3.4mm, A 1.8 mm thick pellet is prepared by press molding.
- the load at the time of pressing is 3 ⁇ 15MN (Mega Newton) / m 2 , and the bulk density of the pressed body is preferably 3200 ⁇ 4000kg / m 3 .
- Preferred examples of the binder include at least one selected from camphor, stearic acid, polyvinyl alcohol, naphthalene, and the like.
- a 20 kW DC plasma CVD system was supplied with 20 NL (Normal Litter) Zmin as an electrode working gas, and a plasma arc was generated at a temperature of less than
- 53 ⁇ 4 Vaporized at 350 ° C: A mixture of tantalum gas (15 gZm in: calculated on the basis of tantalum pentachloride) accompanied by 15 NL / min of argon and hydrogen gas 9 ONLZm in were introduced, and hydrogen gas was introduced. Return 3 ⁇ 4R ⁇ to get Tanta powder.
- EIAJ RC-2361A is a test method of tantalum sintered anodes for electric capacitors (QJOE, February 2002). Easy example 2-3), (Female example 1-2)
- Example 1 As in Example 1, it was difficult to change the cattle, specifically, Kaku? ⁇ Tera, as shown in Table 1. In addition, 1; 0 minutes in the case of ⁇ Tera in the case 2 of Nen means that we do not do kaku drunk. The results are shown in Table 1.
- Difficulties 1 and Examples 2-3 in the range of the present invention were all leaks of 0.5 nA // iFV or less. Below, a static amount of 220,000 ⁇ or more was obtained. However, in Comparative Examples 1 and 2, since the bulk density was out of the range of the present invention, large leakage and It was a small amount of Shito. Fiber example 4)
- a 20 kW DC plasma CVD apparatus was supplied with 2 ONLZmin as argon gas to generate a plasma arc under large H.
- 2 ONLZmin as argon gas
- a gas mixture of tantalum pentade vaporized at 350 ° C (10 g / min by heavy fiber calculation of tantalum pentade) was entrained in argon 1 ONLZmin and hydrogen gas 8 Introduce ONL / min into the plasma arc, and run the eye water;
- the tanta / V3 ⁇ 4 and powder were flared for 5 minutes in an agate mortar while measuring the bulk density by the JI SZ-2504 method.
- the specific surface magnetism of the obtained tantano V3 ⁇ 4 and powder was measured by the BET method, and the bulk density was measured by the JI SZ-2504 method.
- the specific surface area was 7: 5 m 2 / g, and the bulk density was 0.4 gZ cm 3 .
- the tantalum powder According to the electrical characteristics of the tantalum powder, a box of 100,000 CV powder of EIAJ RC-23 61A of JEOL's rating was manufactured, and a tantalum male element was manufactured and leaked. The current and fl ⁇ amount were measured. As a result, the leakage current at a ⁇ / ⁇ temperature of 1250 ° C was 0.8 ⁇ / ⁇ FV, and the static TO amount was 37,000 ⁇ FV, g (see Table 2).
- Tantano W3 ⁇ 4 the end of the horn, the cow, specifically the horn, was changed in the same manner as in Example 4 except that the angle was changed as shown in Table 2. Minutes mean that you have no corners. Table 2 shows the results
- the leakage was also 0.8 ⁇ / ⁇ FV or less, and the static value was 360,000 ⁇ FV / g or more, but Jtgi Example 3 Since the bulk density is out of the range of the present invention, compared with Examples 4 to 6, it has a large leakage and a small amount of static
- a mixture of tantalum trioxide gas vaporized at 350 ° C (20 g / min in terms of tantalum pentoxide) and argon gas 7 NL / min and hydrogen gas 85 N 1 Introduce / min into the plasm and mark, and carry out Yusui Yun ⁇ S to get the Tantano, get the end Tantano! ⁇ ,
- the powder was horned in a mortar for 10 minutes while measuring the bulk density according to the JIS II 2504 method.
- the resulting tantalum and powder ratio tables were determined by the B ⁇ method and the bulk density was measured by the JI SZ-2504 method.
- the specific surface area was 2.8 m 2 Zg
- the bulk density was 0.9 gZcm 3 .
- the amount of the test was measured: fee
- the leakage at 1250 ° C was 0.4 nA / FV
- the amount of static was 123,000 ⁇ FV, g (see Table 3).
- 'it ⁇ Example 4 shows that the bulk density force is within the range of the present invention, but the specific surface area is out of the range of the present invention.
- Tanta 3 ⁇ 4 the end of the horn, the cow, specifically the horn of the temple, changed as shown in Table 3.
- the time between egg temples is 0 minutes, which means that Kakuben is not running. Table 3 shows the results.
- Fig. 2 shows the results of measuring the time-dependent changes in the leakage of water up to 1000 hours using the tantalum powders of Wei Example 5 and Comparative Example 3. As a result, it was shown that the leakage current of the solid capacitor of Example 5 of the present invention had a small change over time over a long period of time, and was very inexpensive.
- Example 1 10 0.5 4.8 0.5 220000
- Example 2 30 0.2 5 0.5 230000
- Example 3 5 0.9 4.8 0.4 220000 Comparative example 1 2 1.1 4.8 0.8 1SOOO0 Comparative example 20 .. 1 .-2 4.8 0.7 170000
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004119946 | 2004-04-15 | ||
JP2004-119946 | 2004-04-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005099936A1 true WO2005099936A1 (ja) | 2005-10-27 |
Family
ID=35149829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/007376 WO2005099936A1 (ja) | 2004-04-15 | 2005-04-12 | タンタル粉末およびこれを用いた固体電解コンデンサ |
Country Status (2)
Country | Link |
---|---|
TW (1) | TW200603921A (ja) |
WO (1) | WO2005099936A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103945965A (zh) * | 2011-11-29 | 2014-07-23 | 昭和电工株式会社 | 钨细粉的制造方法 |
US9530569B2 (en) | 2012-05-29 | 2016-12-27 | Showa Denko K.K. | Method for manufacturing solid electrolytic capacitor element |
EP3009210A4 (en) * | 2013-06-13 | 2017-01-25 | Ishihara Chemical Co., Ltd. | Ta POWDER, PRODUCTION METHOD THEREFOR, AND Ta GRANULATED POWDER |
US9669460B2 (en) | 2011-11-15 | 2017-06-06 | Showa Denko K.K. | Method for producing fine tungsten powder |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0897096A (ja) * | 1994-09-28 | 1996-04-12 | Sutaruku Buitetsuku Kk | タンタル粉末及びそれを用いた電解コンデンサ |
JP2000226602A (ja) * | 1999-02-03 | 2000-08-15 | Showa Kyabotto Super Metal Kk | 高容量コンデンサー用タンタル粉末 |
-
2005
- 2005-04-12 WO PCT/JP2005/007376 patent/WO2005099936A1/ja active Application Filing
- 2005-04-15 TW TW094112010A patent/TW200603921A/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0897096A (ja) * | 1994-09-28 | 1996-04-12 | Sutaruku Buitetsuku Kk | タンタル粉末及びそれを用いた電解コンデンサ |
JP2000226602A (ja) * | 1999-02-03 | 2000-08-15 | Showa Kyabotto Super Metal Kk | 高容量コンデンサー用タンタル粉末 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9669460B2 (en) | 2011-11-15 | 2017-06-06 | Showa Denko K.K. | Method for producing fine tungsten powder |
CN103945965A (zh) * | 2011-11-29 | 2014-07-23 | 昭和电工株式会社 | 钨细粉的制造方法 |
CN103945965B (zh) * | 2011-11-29 | 2016-05-18 | 昭和电工株式会社 | 钨细粉的制造方法 |
US9530569B2 (en) | 2012-05-29 | 2016-12-27 | Showa Denko K.K. | Method for manufacturing solid electrolytic capacitor element |
EP3009210A4 (en) * | 2013-06-13 | 2017-01-25 | Ishihara Chemical Co., Ltd. | Ta POWDER, PRODUCTION METHOD THEREFOR, AND Ta GRANULATED POWDER |
Also Published As
Publication number | Publication date |
---|---|
TW200603921A (en) | 2006-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI460038B (zh) | 製造鈮及鉭粉末之方法 | |
WO2005099935A1 (ja) | タンタル粉末およびそれを用いた固体電解コンデンサ | |
CZ302337B6 (cs) | Dusíkem dotovaný niobový prášek a zpusob jeho výroby, anoda kondenzátoru a zpusob její výroby, a kondenzátor | |
KR20090040301A (ko) | 구조화 소결 활성 표면을 갖는 반제품 및 그 제조 방법 | |
JP2004349658A (ja) | 電解コンデンサ | |
WO2005099936A1 (ja) | タンタル粉末およびこれを用いた固体電解コンデンサ | |
EP1275125B1 (en) | Niobium sintered body, production method therefor, and capacitor using the same | |
CN105324824A (zh) | 电容器阳极体及其制造方法 | |
CN101533717B (zh) | 一种超大容量非固体电解质钽电容器制作方法 | |
JP4809463B2 (ja) | タンタル焼結体の製造方法及びコンデンサの製造方法 | |
TW464889B (en) | Niobium powder, its sintered body, and capacitor comprising the same | |
WO2004055843A1 (ja) | 固体電解コンデンサ及びその製造方法 | |
CN1577659B (zh) | 电容器的制备方法 | |
WO2003008673A1 (fr) | Ruban metallique consistant en un alliage de metal acide-terreux et condensateur dote dudit ruban | |
JP3624898B2 (ja) | ニオブ粉、それを用いた焼結体及びそれを用いたコンデンサ | |
JP5222437B1 (ja) | タングステン細粉の製造方法 | |
JP2005325448A (ja) | タンタル粉末およびこれを用いた固体電解コンデンサ | |
EP1227508B1 (en) | Niobium powder and anode for solid electrolytic capacitors made therefrom | |
JPH11224833A (ja) | 固体電解コンデンサ用多孔質陽極体の製造方法 | |
TWI248418B (en) | Niobium powder, anode for solid electrolytic capacitors made therefrom and solid electrolytic capacitor | |
JP2002008952A (ja) | ニオブ焼結体、その製造方法及びその焼結体を用いたコンデンサ | |
JP5016472B2 (ja) | 電解コンデンサ用電極箔の製造方法 | |
WO2019198191A1 (ja) | Ta-Nb合金粉末とその製造方法ならびに固体電解コンデンサ用の陽極素子 | |
JP2000306781A (ja) | 電解コンデンサ用金属粉末ならびにこれを用いた電解コンデンサ用陽極体および電解コンデンサ | |
WO2003061881A1 (fr) | Poudre de niobium et condensateur a electrolyte solide |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |