发明授权
- 专利标题： Process for plating articles with silver-palladium alloys
- 专利标题（中）： 用银 - 铜合金涂覆文章的方法
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申请号： US3725219D申请日： 1965-05-04
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公开(公告)号： US3725219A公开(公告)日： 1973-04-03
- 发明人: WESOLOSKI H
- 申请人： ALLIS CHALMERS MFG CO
- 专利权人： Allis Chalmers Mfg Co
- 当前专利权人： Allis Chalmers Mfg Co
- 优先权： US45300965 1965-05-04
- 主分类号： C25D5/10
- IPC分类号： C25D5/10 ; H01H33/668 ; C23B5/52
摘要：
A PROCESS FOR PLATING AN ARTICLE WITH A SILVER-PALLADIUM ALLOY COMPRISES THE STEPS OF: PROVIDING THE ARTICLE WITH A CONVENTIONAL SILVER STRIKE, ELECTROPLATING THE ARTICLE IN A SILVER CYANIDE SOLUTION AT A CURRENT DENSITY OF ABOUT 10 AMPERES PER SQUARE FOOT FOR ABOUT 20 MINUTES, ELECTROPLATING THE ARTICLE IN AN AGITATING PALLADIUM CHLORIDE AND AMMONIUM CHLORIDE ACIDIC SOLUTION AT A CURRENT DENSITY OF ABOUT 4 AMPERES PER SQUARE FOOT FOR ABOUT 8 HOURS, AND HEATING THE ARTICLE AT A TEMPERATURE OF ABOUT 300 TO 400*C. FOR ABOUT 8 HOURS TO ALLOY THE SILVER AND PALLADIUM THEREON.
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