KR102361011B1 - 금속 분말의 제조 방법 - Google Patents

금속 분말의 제조 방법 Download PDF

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Publication number: KR102361011B1
Authority: KR; South Korea
Prior art keywords: metal; metal powder; powder; oxide; nickel powder
Prior art date: 2017-03-31

Application number

KR1020197032221A

Other languages

English (en)

Korean (ko)

Other versions

KR20190131564A (ko

Inventor

카즈모토 나시지마

츠요시 아사이

미츠구 요시다

Original Assignee

도호 티타늄 가부시키가이샤

Priority date (The priority date 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 date listed.)

2017-03-31

Filing date

2018-02-16

Publication date

2022-02-08

2018-02-16 Application filed by 도호 티타늄 가부시키가이샤 filed Critical 도호 티타늄 가부시키가이샤

2019-11-26 Publication of KR20190131564A publication Critical patent/KR20190131564A/ko

2022-02-08 Application granted granted Critical

2022-02-08 Publication of KR102361011B1 publication Critical patent/KR102361011B1/ko

Links

229910052751 metal Inorganic materials 0.000 title claims abstract description 131
239000002184 metal Substances 0.000 title claims abstract description 131
239000000843 powder Substances 0.000 title claims abstract description 79
238000004519 manufacturing process Methods 0.000 title claims abstract description 21
238000000034 method Methods 0.000 title claims description 29
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
150000004696 coordination complex Chemical class 0.000 claims abstract description 23
239000006185 dispersion Substances 0.000 claims abstract description 22
239000003513 alkali Substances 0.000 claims abstract description 14
239000002253 acid Substances 0.000 claims abstract description 13
238000002156 mixing Methods 0.000 claims abstract description 12
239000003446 ligand Substances 0.000 claims abstract description 7
150000004703 alkoxides Chemical class 0.000 claims description 44
239000008139 complexing agent Substances 0.000 claims description 22
125000004432 carbon atom Chemical group C* 0.000 claims description 12
YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 claims description 10
125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
125000001183 hydrocarbyl group Chemical group 0.000 claims 1
239000002923 metal particle Substances 0.000 abstract description 21
230000015572 biosynthetic process Effects 0.000 abstract description 4
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 66
239000002245 particle Substances 0.000 description 29
239000011248 coating agent Substances 0.000 description 16
238000000576 coating method Methods 0.000 description 16
238000013507 mapping Methods 0.000 description 14
125000000217 alkyl group Chemical group 0.000 description 11
230000007062 hydrolysis Effects 0.000 description 10
238000006460 hydrolysis reaction Methods 0.000 description 10
LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 8
229910052759 nickel Inorganic materials 0.000 description 8
CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 7
239000003960 organic solvent Substances 0.000 description 7
KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
238000005245 sintering Methods 0.000 description 6
239000002002 slurry Substances 0.000 description 6
239000003985 ceramic capacitor Substances 0.000 description 5
230000000052 comparative effect Effects 0.000 description 5
229910052802 copper Inorganic materials 0.000 description 5
239000010949 copper Substances 0.000 description 5
238000009826 distribution Methods 0.000 description 5
238000001035 drying Methods 0.000 description 5
229910052709 silver Inorganic materials 0.000 description 5
229910052719 titanium Inorganic materials 0.000 description 5
239000010936 titanium Substances 0.000 description 5
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
229910010413 TiO 2 Inorganic materials 0.000 description 4
239000003990 capacitor Substances 0.000 description 4
229910052681 coesite Inorganic materials 0.000 description 4
229910052906 cristobalite Inorganic materials 0.000 description 4
238000001914 filtration Methods 0.000 description 4
239000007789 gas Substances 0.000 description 4
238000010438 heat treatment Methods 0.000 description 4
239000007788 liquid Substances 0.000 description 4
239000012071 phase Substances 0.000 description 4
239000000377 silicon dioxide Substances 0.000 description 4
235000012239 silicon dioxide Nutrition 0.000 description 4
239000004332 silver Substances 0.000 description 4
229910052682 stishovite Inorganic materials 0.000 description 4
229910052905 tridymite Inorganic materials 0.000 description 4
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 3
ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
241000723346 Cinnamomum camphora Species 0.000 description 3
XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
229910021193 La 2 O 3 Inorganic materials 0.000 description 3
OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
229910004298 SiO 2 Inorganic materials 0.000 description 3
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
229910052782 aluminium Inorganic materials 0.000 description 3
229960000846 camphor Drugs 0.000 description 3
229930008380 camphor Natural products 0.000 description 3
MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
239000000945 filler Substances 0.000 description 3
239000007791 liquid phase Substances 0.000 description 3
239000000463 material Substances 0.000 description 3
BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 3
238000005406 washing Methods 0.000 description 3
229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
125000003545 alkoxy group Chemical group 0.000 description 2
235000011114 ammonium hydroxide Nutrition 0.000 description 2
230000005540 biological transmission Effects 0.000 description 2
239000003054 catalyst Substances 0.000 description 2
229910052804 chromium Inorganic materials 0.000 description 2
230000032798 delamination Effects 0.000 description 2
125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
150000002430 hydrocarbons Chemical group 0.000 description 2
230000003301 hydrolyzing effect Effects 0.000 description 2
125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
229910052746 lanthanum Inorganic materials 0.000 description 2
150000002736 metal compounds Chemical class 0.000 description 2
125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
239000011259 mixed solution Substances 0.000 description 2
125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
238000011085 pressure filtration Methods 0.000 description 2
150000003839 salts Chemical class 0.000 description 2
229910052710 silicon Inorganic materials 0.000 description 2
239000000243 solution Substances 0.000 description 2
238000003756 stirring Methods 0.000 description 2
239000000126 substance Substances 0.000 description 2
125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 2
229910052726 zirconium Inorganic materials 0.000 description 2
RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
-1 For example Substances 0.000 description 1
GWESVXSMPKAFAS-UHFFFAOYSA-N Isopropylcyclohexane Natural products CC(C)C1CCCCC1 GWESVXSMPKAFAS-UHFFFAOYSA-N 0.000 description 1
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
125000003158 alcohol group Chemical group 0.000 description 1
150000001298 alcohols Chemical class 0.000 description 1
239000000956 alloy Substances 0.000 description 1
229910045601 alloy Inorganic materials 0.000 description 1
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
238000004458 analytical method Methods 0.000 description 1
239000003849 aromatic solvent Substances 0.000 description 1
238000000889 atomisation Methods 0.000 description 1
229910052788 barium Inorganic materials 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
238000004140 cleaning Methods 0.000 description 1
239000010941 cobalt Substances 0.000 description 1
229910017052 cobalt Inorganic materials 0.000 description 1
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
239000002131 composite material Substances 0.000 description 1
229910052593 corundum Inorganic materials 0.000 description 1
230000002542 deteriorative effect Effects 0.000 description 1
239000003989 dielectric material Substances 0.000 description 1
150000002148 esters Chemical class 0.000 description 1
150000002170 ethers Chemical class 0.000 description 1
238000011156 evaluation Methods 0.000 description 1
239000010419 fine particle Substances 0.000 description 1
230000008014 freezing Effects 0.000 description 1
238000007710 freezing Methods 0.000 description 1
FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
229910052739 hydrogen Inorganic materials 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
238000003384 imaging method Methods 0.000 description 1
229910052738 indium Inorganic materials 0.000 description 1
APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
230000002401 inhibitory effect Effects 0.000 description 1
229910052742 iron Inorganic materials 0.000 description 1
125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 description 1
229940011051 isopropyl acetate Drugs 0.000 description 1
GWYFCOCPABKNJV-UHFFFAOYSA-N isovaleric acid Chemical compound CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 description 1
150000002576 ketones Chemical class 0.000 description 1
SORGMJIXNUWMMR-UHFFFAOYSA-N lanthanum(3+);propan-2-olate Chemical compound [La+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SORGMJIXNUWMMR-UHFFFAOYSA-N 0.000 description 1
238000005259 measurement Methods 0.000 description 1
239000012528 membrane Substances 0.000 description 1
150000002739 metals Chemical class 0.000 description 1
239000011812 mixed powder Substances 0.000 description 1
239000000203 mixture Substances 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
239000011733 molybdenum Substances 0.000 description 1
229910052750 molybdenum Inorganic materials 0.000 description 1
125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
125000000962 organic group Chemical group 0.000 description 1
239000008188 pellet Substances 0.000 description 1
ZGSOBQAJAUGRBK-UHFFFAOYSA-N propan-2-olate;zirconium(4+) Chemical compound [Zr+4].CC(C)[O-].CC(C)[O-].CC(C)[O-].CC(C)[O-] ZGSOBQAJAUGRBK-UHFFFAOYSA-N 0.000 description 1
238000010298 pulverizing process Methods 0.000 description 1
239000010944 silver (metal) Substances 0.000 description 1
239000002904 solvent Substances 0.000 description 1
230000000087 stabilizing effect Effects 0.000 description 1
238000000967 suction filtration Methods 0.000 description 1
YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
230000000930 thermomechanical effect Effects 0.000 description 1
MYWQGROTKMBNKN-UHFFFAOYSA-N tributoxyalumane Chemical compound [Al+3].CCCC[O-].CCCC[O-].CCCC[O-] MYWQGROTKMBNKN-UHFFFAOYSA-N 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
239000008096 xylene Substances 0.000 description 1
229910001845 yogo sapphire Inorganic materials 0.000 description 1

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
- B22F2302/25—Oxide

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Engineering & Computer Science (AREA)
Power Engineering (AREA)
Chemical & Material Sciences (AREA)
Manufacturing & Machinery (AREA)
Microelectronics & Electronic Packaging (AREA)
Ceramic Engineering (AREA)
Inorganic Chemistry (AREA)
Powder Metallurgy (AREA)
Conductive Materials (AREA)
Inorganic Compounds Of Heavy Metals (AREA)

KR1020197032221A 2017-03-31 2018-02-16 금속 분말의 제조 방법 KR102361011B1 (ko)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
JPJP-P-2017-072908		2017-03-31
JP2017072908		2017-03-31
PCT/JP2018/005545 WO2018179976A1 (ja)	2017-03-31	2018-02-16	金属粉末の製造方法

Publications (2)

Publication Number	Publication Date
KR20190131564A KR20190131564A (ko)	2019-11-26
KR102361011B1 true KR102361011B1 (ko)	2022-02-08

Family

ID=63674994

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
KR1020197032221A KR102361011B1 (ko)	2017-03-31	2018-02-16	금속 분말의 제조 방법

Country Status (5)

Country	Link
JP (1)	JP6431650B1 (zh)
KR (1)	KR102361011B1 (zh)
CN (1)	CN110461505B (zh)
TW (1)	TWI765992B (zh)
WO (1)	WO2018179976A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
TWI671336B (zh) *	2017-11-23	2019-09-11	國立清華大學	粉體材料及其製造方法

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JP2012102351A (ja)	2010-11-08	2012-05-31	Murata Mfg Co Ltd	複合酸化物被覆金属粉末、その製造方法、導電性ペーストおよび積層セラミック電子部品

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JP3475749B2 (ja)	1997-10-17	2003-12-08	昭栄化学工業株式会社	ニッケル粉末及びその製造方法
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JP5451074B2 (ja) *	2005-12-06	2014-03-26	エルジー・ケム・リミテッド	コアシェル型のナノ粒子及びその製造方法
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JP5439057B2 (ja) *	2009-06-29	2014-03-12	三井金属鉱業株式会社	複合銅粒子
JP5482097B2 (ja) *	2009-10-26	2014-04-23	Ｔｄｋ株式会社	軟磁性材料、並びに、圧粉磁芯及びその製造方法
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