| 摘要 |
1450376 Coating particles with Cu SHERRITT GORDON MINES Ltd 17 June 1975 [12 July 1974] 25693/75 Heading C7F Particles of e.g. Ag, Pt, Au or Pb or calcium fluoride, molybdenum disulphide, cobalt oxide nitrides, borides, diamonds, carbon, silica, alumina, carbides of Cr, Ti or W or diatamaceous earth are coated with copper by first coating with nickel by gas (H2) reduction of an ammonium salt solution, and then displacing the Ni with Cu in a solution (pH not higher than 7). The displacement reaction may take place in a hydrogen atmosphere of 50 to 500 p.s.i.g. |
