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.
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机译：Cu SHERRITT GORDON MINES Ltd.的1450376涂层颗粒1975年6月17日[1974年7月12日] 25693/75税号C7F颗粒，例如Ag，Pt，Au或Pb或氟化钙，二硫化钼，氧化钴氮化物，硼化物，金刚石，碳，二氧化硅，氧化铝，Cr，Ti或W的碳化物或重金属硅土首先通过气体涂覆镍来镀铜（ H2）还原铵盐溶液，然后在溶液（pH不高于7）中用Cu置换Ni。置换反应可以在50至500p.s.i.g.的氢气气氛中进行。
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