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    • 2. 发明授权
    • Method for manufacturing ag-oxide-based electric contact material and product of the same
    • 基于氧化物的电接触材料的制造方法及其制造方法
    • US07189656B2
    • 2007-03-13
    • US10503300
    • 2002-08-15
    • Sadao SatoHideo KumitaKohei TsudaMitsuo YamasitaKunio ShiokawaKenichi KamiuraKiyoshi Sekiguchi
    • Sadao SatoHideo KumitaKohei TsudaMitsuo YamasitaKunio ShiokawaKenichi KamiuraKiyoshi Sekiguchi
    • H01L23/48
    • B22F1/0088C22C1/1078H01H1/0237
    • Although an Ag—CdO-based material has excellent electric properties such as deposition resistance, arc resistance and low contact resistance, which are required for an electric contact, the discharge standard provision in Japan, EC Directive on Waste from Electrical and Electronic Equipment (WEEE) and the like have been directed toward disuse of Cd, as already known.Thus, the present invention is characterized in that after an atmosphere in a pressured oxidation furnace is replaced with oxygen, the temperature of an internal-oxidative Ag alloy prepared under a condition of a cold roll rate of 50 to 95% is gradually raised from a temperature of 200° C. or less in a pressured oxygen atmosphere with an oxygen pressure of 5 to 50 kg/cm2 and internal oxidation processing is performed with an upper limit temperature of 700° C., thereby restraining an Ag-rich layer generated on an outermost surface and an oxide-flocculated layer immediately below the Ag-rich layer and uniformly and finely precipitating and dispersing a composite oxide of added elements to a deep part of an internal structure.
    • 虽然基于Ag-CdO的材料具有电接触所需的优异的电沉积电阻,耐电弧性和低接触电阻等特性,但是在日本的排放标准规定中,EC电子电气设备废物指令(WEEE )等已经被指示为废弃Cd,如已知的。 因此,本发明的特征在于,在用氧气代替加压氧化炉中的气氛后,在冷轧率为50〜95%的条件下制备的内部氧化性Ag合金的温度从 在氧气压力为5〜50kg / cm 2的加压氧气氛中温度为200℃以下,在700℃的上限温度下进行内部氧化处理,由此 抑制在Ag富层的正下方的最外表面和氧化絮凝层上产生的富Ag层,并均匀且精细地将添加元素的复合氧化物沉淀并分散到内部结构的深部。