Title:
METHOD FOR MANUFACTURING PHOSPHORUS-CONTAINING-SILVER-COATED COPPER PARTICLES, AND PHOSPHORUS-CONTAINING-SILVER-COATED COPPER PARTICLES
Document Type and Number:
WIPO Patent Application WO/2023/167302
Kind Code:
A1
Abstract:
These phosphorus-containing-silver-coated copper particles have a phosphorus (P) element-containing silver coating layer on at least a part of the surface of copper base particles, the value of IO
2/(WAg × WP) × 1000 being 1.9 or less. IO is the oxygen increase amount (mass%) after seven days have elapsed in storage at 85°C and 85% RH. WAg is the silver (Ag) element content (mass%) of the phosphorus-containing-silver-coated copper particles. WP is the phosphorus (P) element content (mass ppm) of the phosphorus-containing-silver-coated copper particles. The phosphorus-containing-silver-coated copper particles are manufactured by a method comprising causing a silver compound and phosphoric acid or a salt thereof to coexist in a dispersion of copper base particles, and forming, by precipitation, a phosphorus-containing silver coating layer on the surface of the copper base particles.
Inventors:
NAGASHIMA MIKI (JP)
OCHI KENTARO (JP)
FUJIMOTO TAKU (JP)
OCHI KENTARO (JP)
FUJIMOTO TAKU (JP)
Application Number:
PCT/JP2023/007914
Publication Date:
September 07, 2023
Filing Date:
March 02, 2023
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO LTD (JP)
International Classes:
B22F1/17; B22F1/00; C23C18/42; C23C18/44
Foreign References:
| JPH06240463A | 1994-08-30 | |||
| JP2015092017A | 2015-05-14 | |||
| JP2002075057A | 2002-03-15 | |||
| JP2015509139A | 2015-03-26 |
Attorney, Agent or Firm:
SHOWA INTERNATIONAL PATENT FIRM (JP)
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