JP2006117959A - 電子材料用銅粉 - Google Patents
電子材料用銅粉 Download PDFInfo
- Publication number
- JP2006117959A JP2006117959A JP2004303624A JP2004303624A JP2006117959A JP 2006117959 A JP2006117959 A JP 2006117959A JP 2004303624 A JP2004303624 A JP 2004303624A JP 2004303624 A JP2004303624 A JP 2004303624A JP 2006117959 A JP2006117959 A JP 2006117959A
- Authority
- JP
- Japan
- Prior art keywords
- copper powder
- water
- nitrogen
- copper
- solution
- 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
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 239000012776 electronic material Substances 0.000 title description 5
- -1 nitrogen-containing heterocyclic compound Chemical class 0.000 claims abstract description 20
- 229920003169 water-soluble polymer Polymers 0.000 claims abstract description 20
- 239000012298 atmosphere Substances 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims description 24
- 108010010803 Gelatin Proteins 0.000 claims description 9
- 229920000159 gelatin Polymers 0.000 claims description 9
- 239000008273 gelatin Substances 0.000 claims description 9
- 235000019322 gelatine Nutrition 0.000 claims description 9
- 235000011852 gelatine desserts Nutrition 0.000 claims description 9
- 150000002460 imidazoles Chemical class 0.000 claims description 3
- 150000003230 pyrimidines Chemical class 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 2
- 125000003785 benzimidazolyl group Chemical class N1=C(NC2=C1C=CC=C2)* 0.000 claims 1
- 125000003354 benzotriazolyl group Chemical class N1N=NC2=C1C=CC=C2* 0.000 claims 1
- 125000000561 purinyl group Chemical class N1=C(N=C2N=CNC2=C1)* 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 abstract description 14
- 239000010949 copper Substances 0.000 abstract description 14
- 239000000919 ceramic Substances 0.000 abstract description 11
- 239000000758 substrate Substances 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 20
- 239000002253 acid Substances 0.000 description 18
- 239000002245 particle Substances 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- UYTPUPDQBNUYGX-UHFFFAOYSA-N guanine Chemical compound O=C1NC(N)=NC2=C1N=CN2 UYTPUPDQBNUYGX-UHFFFAOYSA-N 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 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
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 235000010980 cellulose Nutrition 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- CHZUJMWAUOTJFG-UHFFFAOYSA-N 2-pentyl-1h-imidazole Chemical compound CCCCCC1=NC=CN1 CHZUJMWAUOTJFG-UHFFFAOYSA-N 0.000 description 2
- NGKNMHFWZMHABQ-UHFFFAOYSA-N 4-chloro-2h-benzotriazole Chemical compound ClC1=CC=CC2=NNN=C12 NGKNMHFWZMHABQ-UHFFFAOYSA-N 0.000 description 2
- XLSZMDLNRCVEIJ-UHFFFAOYSA-N 4-methylimidazole Chemical compound CC1=CNC=N1 XLSZMDLNRCVEIJ-UHFFFAOYSA-N 0.000 description 2
- UTMDJGPRCLQPBT-UHFFFAOYSA-N 4-nitro-1h-1,2,3-benzotriazole Chemical compound [O-][N+](=O)C1=CC=CC2=NNN=C12 UTMDJGPRCLQPBT-UHFFFAOYSA-N 0.000 description 2
- LRFVTYWOQMYALW-UHFFFAOYSA-N 9H-xanthine Chemical compound O=C1NC(=O)NC2=C1NC=N2 LRFVTYWOQMYALW-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 150000001556 benzimidazoles Chemical class 0.000 description 2
- 150000001565 benzotriazoles Chemical class 0.000 description 2
- 238000007385 chemical modification Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- OPTASPLRGRRNAP-UHFFFAOYSA-N cytosine Chemical compound NC=1C=CNC(=O)N=1 OPTASPLRGRRNAP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- FDGQSTZJBFJUBT-UHFFFAOYSA-N hypoxanthine Chemical compound O=C1NC=NC2=C1NC=N2 FDGQSTZJBFJUBT-UHFFFAOYSA-N 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- GLVAUDGFNGKCSF-UHFFFAOYSA-N mercaptopurine Chemical compound S=C1NC=NC2=C1NC=N2 GLVAUDGFNGKCSF-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 150000003212 purines Chemical class 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- MTCFGRXMJLQNBG-REOHCLBHSA-N (2S)-2-Amino-3-hydroxypropansäure Chemical compound OC[C@H](N)C(O)=O MTCFGRXMJLQNBG-REOHCLBHSA-N 0.000 description 1
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 1
- ZFDWWDZLRKHULH-UHFFFAOYSA-N 1,2-dimethyl-5,6-dihydro-4h-pyrimidine Chemical compound CN1CCCN=C1C ZFDWWDZLRKHULH-UHFFFAOYSA-N 0.000 description 1
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- RNIPJYFZGXJSDD-UHFFFAOYSA-N 2,4,5-triphenyl-1h-imidazole Chemical compound C1=CC=CC=C1C1=NC(C=2C=CC=CC=2)=C(C=2C=CC=CC=2)N1 RNIPJYFZGXJSDD-UHFFFAOYSA-N 0.000 description 1
- XPTCECRKQRKFLH-UHFFFAOYSA-N 2,6,8-trichloro-7h-purine Chemical compound ClC1=NC(Cl)=C2NC(Cl)=NC2=N1 XPTCECRKQRKFLH-UHFFFAOYSA-N 0.000 description 1
- JCTGZHHNDFGRFR-UHFFFAOYSA-N 2,6-dimethyl-8-(2-methylphenyl)-7H-purine Chemical compound CC1=NC(=C2NC(=NC2=N1)C1=C(C=CC=C1)C)C JCTGZHHNDFGRFR-UHFFFAOYSA-N 0.000 description 1
- HOQHPUCMKQADER-UHFFFAOYSA-N 2,8-dichloro-3,7-dihydropurin-6-one Chemical compound N1C(Cl)=NC(=O)C2=C1N=C(Cl)N2 HOQHPUCMKQADER-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- XBXVUKKKEYEPTR-UHFFFAOYSA-N 2-(2-methylphenyl)-1h-benzimidazole Chemical compound CC1=CC=CC=C1C1=NC2=CC=CC=C2N1 XBXVUKKKEYEPTR-UHFFFAOYSA-N 0.000 description 1
- VJRPHCDQRJAVSR-UHFFFAOYSA-N 2-(naphthalen-1-ylmethyl)-1h-benzimidazole Chemical compound C1=CC=C2C(CC=3NC4=CC=CC=C4N=3)=CC=CC2=C1 VJRPHCDQRJAVSR-UHFFFAOYSA-N 0.000 description 1
- GHCFWKFREBNSPC-UHFFFAOYSA-N 2-Amino-4-methylpyrimidine Chemical compound CC1=CC=NC(N)=N1 GHCFWKFREBNSPC-UHFFFAOYSA-N 0.000 description 1
- HITWHALOZBMLHY-UHFFFAOYSA-N 2-Butyl-1H-benzimidazole Chemical compound C1=CC=C2NC(CCCC)=NC2=C1 HITWHALOZBMLHY-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- YCFWZXAEOXKNHL-UHFFFAOYSA-N 2-amino-8-chloro-3,7-dihydropurin-6-one Chemical compound N1C(N)=NC(=O)C2=C1N=C(Cl)N2 YCFWZXAEOXKNHL-UHFFFAOYSA-N 0.000 description 1
- IAUJRBJTEIEKGY-UHFFFAOYSA-N 2-benzhydryl-6-methyl-1h-benzimidazole Chemical compound N1C2=CC(C)=CC=C2N=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 IAUJRBJTEIEKGY-UHFFFAOYSA-N 0.000 description 1
- SLLDUURXGMDOCY-UHFFFAOYSA-N 2-butyl-1h-imidazole Chemical compound CCCCC1=NC=CN1 SLLDUURXGMDOCY-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- QHCCOYAKYCWDOJ-UHFFFAOYSA-N 2-ethyl-1h-benzimidazole Chemical compound C1=CC=C2NC(CC)=NC2=C1 QHCCOYAKYCWDOJ-UHFFFAOYSA-N 0.000 description 1
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- LDZYRENCLPUXAX-UHFFFAOYSA-N 2-methyl-1h-benzimidazole Chemical compound C1=CC=C2NC(C)=NC2=C1 LDZYRENCLPUXAX-UHFFFAOYSA-N 0.000 description 1
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- KFJDQPJLANOOOB-UHFFFAOYSA-N 2h-benzotriazole-4-carboxylic acid Chemical compound OC(=O)C1=CC=CC2=NNN=C12 KFJDQPJLANOOOB-UHFFFAOYSA-N 0.000 description 1
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- CQLAMJKGAKHIOC-UHFFFAOYSA-N 3-hydroxybenzotriazole-5-carboxylic acid Chemical compound OC(=O)C1=CC=C2N=NN(O)C2=C1 CQLAMJKGAKHIOC-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決する手段】 不活性雰囲気中又は還元性雰囲気中で、かつ、昇温速度が10℃/min以上の条件下において、焼結開始温度が700℃以上である含窒素複素環化合物または水溶性高分子で表面被覆されたことを特徴とする銅粉である。
【選択図面】 図1
Description
上記の問題を解決するため、銅粉の製造時に焼結開始温度を高める元素を添加して合金化させる方法などが開示されている(例えば、特許文献1及び2)。
本発明の銅粉は、原料としての銅粉を含窒素複素環化合物又は水溶性高分子で表面被覆することにより得られる。
含窒素複素環化合物又は水溶性高分子を原料となる銅粉に表面被覆するためには、溶媒に溶解して、溶液として使用すればよい。
本発明の銅粉は、昇温速度を調整することにより、焼結開始温度をさらに上昇させることができる。
原料となる銅粉として、アトマイズ法で製造された平均粒径約3μmの球形の銅粉(福田金属箔粉工業(株)製:Cu-HWQ-3)を用いた。平均粒径は、島津製作所(株)レーザー
回折装置SALD-3000にて粒度分布を測定し、その粒度分布の積算50%粒径を平均粒径とした。該銅粉10gを、約500mLの5容量%硫酸水溶液中に浸漬し、1分程度攪拌して酸洗浄した。酸洗浄は3回繰り返した。酸洗浄後、硫酸水溶液を吸引濾過し、0.01mol/Lに調製した水酸化ナトリウム水溶液約250mLにて中和した。洗浄した銅粉を、0.04容量%に調製したベンゾトリアゾール(C.V.I.リキッド、キレスト(株))のメタノール溶液中に浸漬し、
1分程度攪拌して表面被覆を行った。表面被覆は、常温で行った。表面被覆後、上記の溶液を吸引濾過して除き、オーブンにて約80℃で1時間乾燥させた。
表面被覆液の濃度を0.1%とした他は実施例1と同様にして、表面被覆した銅粉を作製し、実施例1と同様に焼結開始温度の測定をした。
原料となる銅粉として、化学還元法で製造された平均粒径約1.5μmの粒状の銅粉(福田金属箔粉工業(株)製:EFC-9000)を用いた。平均粒径は、島津製作所(株)製のレーザー
回折装置SALD-3000にて粒度分布を測定し、その粒度分布の積算50%粒径を平均粒径とした。該銅粉10gを、約500mlの5容量%硫酸水溶液中に浸漬し、1分程度攪拌して酸洗浄した。酸洗浄は3回繰り返した。酸洗浄後、硫酸水溶液を吸引濾過し、0.01mol/Lに調製した水酸化ナトリウム水溶液約250mLにて中和した。洗浄した銅粉を、0.05重量%に調製したゼラチン(野洲化学工業(株))の水溶液中に浸漬し、1分程度攪拌して表面被覆を行っ
た。表面被覆は、常温で行った。表面被覆後、上記の溶液を吸引濾過して除き、オーブンにて約80℃で1時間乾燥させた。焼結開始温度の測定は実施例1と同様に行った。
実施例1と同じ金属粉末を使用し、この金属粉は当然のことながら表面被覆は行わなかった。焼結開始温度の測定は実施例1と同様に行った。
実施例3と同じ金属粉末を使用し、この金属粉は当然のことながら表面被覆は行わなかった。焼結開始温度の測定は実施例1と同様に行った。
実施例1、2においては、焼結開始温度が700℃以上になっていることがわかる。これに対し、比較例1では焼結開始温度が、520℃にしかならなかった。
実施例3においては、焼結開始温度が、730℃以上になっていることがわかる。これに対して、比較例2においては、焼結開始温度が、530℃にしかならなかった。
Claims (4)
- 不活性雰囲気中又は還元性雰囲気中で、かつ、昇温速度が10℃/min以上の条件下において、焼結開始温度が700℃以上である含窒素複素環化合物で表面被覆されたことを特徴とする銅粉。
- 不活性雰囲気中又は還元性雰囲気中で、かつ、昇温速度が10℃/min以上の条件下において、焼結開始温度が700℃以上である水溶性高分子で表面被覆されたことを特徴とする銅粉。
- 含窒素複素環化合物が、ベンゾトリアゾール系化合物、イミダゾール系化合物、ベンズイミダゾール系化合物、プリン系化合物およびピリミジン系化合物からなる群から選ばれる少なくとも一種である請求項1に記載の銅粉。
- 水溶
性高分子がゼラチンである請求項2に記載の銅粉。
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008013837A (ja) * | 2006-07-10 | 2008-01-24 | Sumitomo Metal Mining Co Ltd | 微小銅粉及びその製造方法 |
JP2011191263A (ja) * | 2010-03-16 | 2011-09-29 | Dowa Electronics Materials Co Ltd | 金属粉表面のベンゾトリアゾールの定量方法 |
JP2015183255A (ja) * | 2014-03-25 | 2015-10-22 | 住友金属鉱山株式会社 | 銅微粒子、導電ペースト組成物及びこれらの製造方法 |
US20160035455A1 (en) * | 2013-06-13 | 2016-02-04 | E I Du Pont De Nemours And Company | Photonic sintering of polymer thick film copper conductor compositions |
JP2016191084A (ja) * | 2015-03-30 | 2016-11-10 | Jx金属株式会社 | 表面処理された銅微粒子及びその製造方法 |
CN113210601A (zh) * | 2021-04-30 | 2021-08-06 | 广东华诺勤耕材料科技有限公司 | 一种包覆改性铜粉的制备方法及包覆改性铜粉 |
CN117457504A (zh) * | 2023-12-22 | 2024-01-26 | 成都万士达瓷业有限公司 | 一种陶瓷封装表面覆铜的生产方法 |
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Cited By (8)
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JP2008013837A (ja) * | 2006-07-10 | 2008-01-24 | Sumitomo Metal Mining Co Ltd | 微小銅粉及びその製造方法 |
JP2011191263A (ja) * | 2010-03-16 | 2011-09-29 | Dowa Electronics Materials Co Ltd | 金属粉表面のベンゾトリアゾールの定量方法 |
US20160035455A1 (en) * | 2013-06-13 | 2016-02-04 | E I Du Pont De Nemours And Company | Photonic sintering of polymer thick film copper conductor compositions |
JP2015183255A (ja) * | 2014-03-25 | 2015-10-22 | 住友金属鉱山株式会社 | 銅微粒子、導電ペースト組成物及びこれらの製造方法 |
JP2016191084A (ja) * | 2015-03-30 | 2016-11-10 | Jx金属株式会社 | 表面処理された銅微粒子及びその製造方法 |
CN113210601A (zh) * | 2021-04-30 | 2021-08-06 | 广东华诺勤耕材料科技有限公司 | 一种包覆改性铜粉的制备方法及包覆改性铜粉 |
CN117457504A (zh) * | 2023-12-22 | 2024-01-26 | 成都万士达瓷业有限公司 | 一种陶瓷封装表面覆铜的生产方法 |
CN117457504B (zh) * | 2023-12-22 | 2024-03-08 | 成都万士达瓷业有限公司 | 一种陶瓷封装表面覆铜的生产方法 |
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