JP7039126B2 - 銅粉およびその製造方法 - Google Patents
銅粉およびその製造方法 Download PDFInfo
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- JP7039126B2 JP7039126B2 JP2017242314A JP2017242314A JP7039126B2 JP 7039126 B2 JP7039126 B2 JP 7039126B2 JP 2017242314 A JP2017242314 A JP 2017242314A JP 2017242314 A JP2017242314 A JP 2017242314A JP 7039126 B2 JP7039126 B2 JP 7039126B2
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- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
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- B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
- B22F2009/0828—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid with water
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- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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Description
[実施例1]
水圧を106MPa、水量を165L/分とした以外は、実施例1と同様の方法により、得られた銅粉について、BET比表面積、タップ密度、酸素含有量、炭素含有量、粒度分布、結晶子径(Dx)および円形度係数の平均値を求めるとともに、銅粉の熱機械的分析(TMA)を行った。
水圧を105MPa、水量を163L/分とした以外は、実施例1と同様の方法により、得られた銅粉について、BET比表面積、タップ密度、酸素含有量、炭素含有量、粒度分布、結晶子径(Dx)および円形度係数の平均値を求めるとともに、銅粉の熱機械的分析(TMA)を行った。
無酸素銅ボールを1500℃に加熱して溶解した溶湯を使用し、水圧を111MPa、水量を165L/分とした以外は、実施例1と同様の方法により、得られた銅粉について、BET比表面積、タップ密度、酸素含有量、炭素含有量、粒度分布、結晶子径(Dx)および円形度係数の平均値を求めるとともに、銅粉の熱機械的分析(TMA)を行った。
無酸素銅ボールを大気雰囲気中において1617℃に加熱して溶解した溶湯を使用し、水圧を104MPa、水量を166L/分とした以外は、実施例1と同様の方法により、得られた銅粉について、BET比表面積、タップ密度、酸素含有量、炭素含有量、粒度分布、結晶子径(Dx)および円形度係数の平均値を求めるとともに、銅粉の熱機械的分析(TMA)を行った。
無酸素銅ボールを1200℃に加熱して溶解した溶湯を使用し、水圧を100MPa、水量を160L/分とした以外は、実施例1と同様の方法により、得られた銅粉について、BET比表面積、タップ密度、酸素含有量、炭素含有量、粒度分布、結晶子径(Dx)および円形度係数の平均値を求めるとともに、銅粉の熱機械的分析(TMA)を行った。
無酸素銅ボールを窒素雰囲気中において1600℃に加熱して溶解した溶湯を大気雰囲気中においてタンディッシュ下部から落下させながら、水圧117MPa、水量166L/分で高圧水(pH10.2のアルカリ水)を吹き付けて急冷凝固させ、得られたスラリーを固液分離し、固形物を水洗し、乾燥し、解砕し、風力分級して、銅粉を得た。
Claims (10)
- 銅の融点より250~700℃高い温度に加熱した銅溶湯を落下させながら、非酸化性雰囲気中において純水またはアルカリ水からなる高圧水を水圧60~180MPaで吹き付けて急冷凝固させることにより、銅と酸素と不可避不純物のみからなる銅粉を製造することを特徴とする、銅粉の製造方法。
- 前記加熱が非酸化性雰囲気中において行われることを特徴とする、請求項1に記載の銅粉の製造方法。
- 銅と酸素と不可避不純物のみからなり、平均粒径が1~10μm、(200)面における結晶子径Dx(200)が40nm以上であり、酸素含有量が0.7質量%以下であることを特徴とする、銅粉。
- 前記銅粉の円形度係数が0.80~0.94であることを特徴とする、請求項3に記載の銅粉。
- 前記銅粉のBET比表面積に対する酸素含有量の比が2.0質量%・g/m2以下であることを特徴とする、請求項3または4に記載の銅粉。
- 前記銅粉の(111)面における結晶子径Dx(111)が130nm以上であることを特徴とする、請求項3乃至5のいずれかに記載の銅粉。
- 前記銅粉の熱機械的分析における収縮率1.0%のときの温度が580℃以上であることを特徴とする、請求項3乃至6のいずれかに記載の銅粉。
- 請求項3乃至7のいずれかに記載の銅粉が有機成分中に分散していることを特徴とする、導電性ペースト。
- 前記導電性ペーストが焼成型導電性ペーストであることを特徴とする、請求項8に記載の導電性ペースト。
- 請求項9の焼成型導電性ペーストを基板上に塗布した後に焼成して導電膜を製造することを特徴とする、導電膜の製造方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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US16/473,353 US11692241B2 (en) | 2016-12-28 | 2017-12-21 | Copper powder and method for producing same |
EP17885785.0A EP3560637B1 (en) | 2016-12-28 | 2017-12-21 | Copper powder and method for manufacturing same |
KR1020197021809A KR102397204B1 (ko) | 2016-12-28 | 2017-12-21 | 구리 분말 및 그의 제조 방법 |
PCT/JP2017/045934 WO2018123809A1 (ja) | 2016-12-28 | 2017-12-21 | 銅粉およびその製造方法 |
CN201780080871.0A CN110114174A (zh) | 2016-12-28 | 2017-12-21 | 铜粉及其制造方法 |
TW106145736A TWI778997B (zh) | 2016-12-28 | 2017-12-26 | 銅粉、該銅粉的製造方法、使用該銅粉之導電性糊、及使用該導電性糊之導電性膜的製造方法 |
US18/196,614 US20230279523A1 (en) | 2016-12-28 | 2023-05-12 | Copper powder and method for producing same |
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JP2016255186 | 2016-12-28 | ||
JP2016255186 | 2016-12-28 |
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JP7039126B2 true JP7039126B2 (ja) | 2022-03-22 |
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US (1) | US11692241B2 (ja) |
EP (1) | EP3560637B1 (ja) |
JP (1) | JP7039126B2 (ja) |
CN (1) | CN110114174A (ja) |
TW (1) | TWI778997B (ja) |
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JP6856350B2 (ja) * | 2015-10-30 | 2021-04-07 | Dowaエレクトロニクス株式会社 | 銀粉およびその製造方法 |
KR102397204B1 (ko) * | 2016-12-28 | 2022-05-11 | 도와 일렉트로닉스 가부시키가이샤 | 구리 분말 및 그의 제조 방법 |
JP7132751B2 (ja) * | 2018-06-01 | 2022-09-07 | 山陽特殊製鋼株式会社 | Cu基合金粉末 |
JP7194087B2 (ja) * | 2019-07-23 | 2022-12-21 | 山陽特殊製鋼株式会社 | Cu基合金粉末 |
JP6704083B1 (ja) * | 2019-11-22 | 2020-06-03 | 東邦チタニウム株式会社 | 銅粉体とその製造方法 |
JP7425634B2 (ja) | 2020-03-12 | 2024-01-31 | 山陽特殊製鋼株式会社 | Cu基合金粉末 |
WO2023074827A1 (ja) * | 2021-10-28 | 2023-05-04 | 三井金属鉱業株式会社 | 銅粒子及びその製造方法 |
JP2024008681A (ja) * | 2022-07-08 | 2024-01-19 | Jx金属株式会社 | 銅粉 |
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JPH083486A (ja) * | 1994-06-20 | 1996-01-09 | Fukuda Metal Foil & Powder Co Ltd | 水性導電塗料 |
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US11692241B2 (en) | 2023-07-04 |
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