JPS56150101A - Preparation of powder coated with noble metal - Google Patents

Preparation of powder coated with noble metal

Info

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
Application number
JP5151680A
Other languages
Japanese (ja)
Other versions
JPS6122028B2 (en
Inventor
Shinroku Kawakado
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP5151680A priority Critical patent/JPS56150101A/en
Priority to US06/251,746 priority patent/US4450188A/en
Publication of JPS56150101A publication Critical patent/JPS56150101A/en
Publication of JPS6122028B2 publication Critical patent/JPS6122028B2/ja
Granted legal-status Critical Current

Links

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
JP5151680A 1980-04-18 1980-04-18 Preparation of powder coated with noble metal Granted JPS56150101A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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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