JPS56150101A - Preparation of powder coated with noble metal - Google Patents
Preparation of powder coated with noble metalInfo
- Publication number
- JPS56150101A JPS56150101A JP5151680A JP5151680A JPS56150101A JP S56150101 A JPS56150101 A JP S56150101A JP 5151680 A JP5151680 A JP 5151680A JP 5151680 A JP5151680 A JP 5151680A JP S56150101 A JPS56150101 A JP S56150101A
- Authority
- JP
- Japan
- Prior art keywords
- noble metal
- reducing agent
- substrate material
- metal salt
- homogeneously dispersed
- 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.)
- Granted
Links
- 229910000510 noble metal Inorganic materials 0.000 title abstract 9
- 239000000843 powder Substances 0.000 title abstract 5
- 238000002360 preparation method Methods 0.000 title abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 4
- 150000003839 salts Chemical class 0.000 abstract 4
- 239000000758 substrate Substances 0.000 abstract 4
- 150000002500 ions Chemical class 0.000 abstract 3
- 239000007900 aqueous suspension Substances 0.000 abstract 2
- 239000011247 coating layer Substances 0.000 abstract 2
- 238000003756 stirring Methods 0.000 abstract 2
- 150000007522 mineralic acids Chemical class 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
Landscapes
- Powder Metallurgy (AREA)
- Chemically Coating (AREA)
Abstract
PURPOSE: To prepare powder nearly completely coated with a high-purity noble metal, by adding a reducing agent under stirring to a water suspension comprising substrate material powder and a noble metal salt in a homogeneously dispersed state and noble metal ions in a dissolved state.
CONSTITUTION: The reducing agent is added under stirring to the water suspension comprising substrate material powder present in a homogeneously dispersed state (A), the noble metal salt present in a homogeneously dispersed state which forms a coating layer (B), and noble metal ions present in a dissolved state which form a coating layer (C). This suspension contains an inorganic acid which hardly dissolves the substrate material and dissolves the added noble metal salt partially or wholly. A reducing agent need not be more than it can reduce a noble metal salt and its ions, but hydrozine in a particularly preferable reducing agent. Said preparation gives substrate material powder coated with a high-purity noble metal.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5151680A JPS56150101A (en) | 1980-04-18 | 1980-04-18 | Preparation of powder coated with noble metal |
US06/251,746 US4450188A (en) | 1980-04-18 | 1981-04-07 | Process for the preparation of precious metal-coated particles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5151680A JPS56150101A (en) | 1980-04-18 | 1980-04-18 | Preparation of powder coated with noble metal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56150101A true JPS56150101A (en) | 1981-11-20 |
JPS6122028B2 JPS6122028B2 (en) | 1986-05-29 |
Family
ID=12889164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5151680A Granted JPS56150101A (en) | 1980-04-18 | 1980-04-18 | Preparation of powder coated with noble metal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56150101A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6092402A (en) * | 1983-10-26 | 1985-05-24 | Tanaka Kikinzoku Kogyo Kk | Manufacture of fine metallic sphere |
JPS62107073A (en) * | 1985-11-01 | 1987-05-18 | Nippon Chem Ind Co Ltd:The | Production of noble metal plated material |
JPS62192501A (en) * | 1986-02-18 | 1987-08-24 | Mitsubishi Metal Corp | Co-w coated wc powder |
JPH01198403A (en) * | 1988-02-04 | 1989-08-10 | Sumitomo Metal Mining Co Ltd | Palladium coated silver powder and its manufacture and conductive film forming composition |
JPH10501025A (en) * | 1993-10-08 | 1998-01-27 | アメリカ合衆国 | Acid assisted cold welding and intermetallic formation and its dental applications |
-
1980
- 1980-04-18 JP JP5151680A patent/JPS56150101A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6092402A (en) * | 1983-10-26 | 1985-05-24 | Tanaka Kikinzoku Kogyo Kk | Manufacture of fine metallic sphere |
JPS62107073A (en) * | 1985-11-01 | 1987-05-18 | Nippon Chem Ind Co Ltd:The | Production of noble metal plated material |
JPH0475317B2 (en) * | 1985-11-01 | 1992-11-30 | ||
JPS62192501A (en) * | 1986-02-18 | 1987-08-24 | Mitsubishi Metal Corp | Co-w coated wc powder |
JPH01198403A (en) * | 1988-02-04 | 1989-08-10 | Sumitomo Metal Mining Co Ltd | Palladium coated silver powder and its manufacture and conductive film forming composition |
JPH10501025A (en) * | 1993-10-08 | 1998-01-27 | アメリカ合衆国 | Acid assisted cold welding and intermetallic formation and its dental applications |
Also Published As
Publication number | Publication date |
---|---|
JPS6122028B2 (en) | 1986-05-29 |
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