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研究了铜基块体非晶合金Cu55-x Zr37Ti8Inx(x=0～5,at%)及Cu61-x Zr34Ti5Inx(x=0～3,at%)在质量分数3.5%NaCl溶液中的耐蚀性。极化曲线结果表明,在铜基非晶合金中添加In元素能明显提高合金的腐蚀电位、降低腐蚀电流密度,即能明显提高耐蚀性。含In的铜基块体非晶合金的腐蚀电流密度(Icorr)值比不含In的铜基块体非晶合金低约1个数量级。而且,利用In适量取代Cu可进一步提高耐蚀性。但过量添加In不利于形成富Zr保护膜,从而降低合金的耐蚀性。
The corrosion resistance of Cu55-xZr37Ti8Inx (x = 0 ~ 5, at%) and Cu61-xZr34Ti5Inx (x = 0 ~ 3, at%) in Cu (mass fraction) 3.5% . Polarization curve results show that the addition of In element in the copper-based amorphous alloy can significantly improve the corrosion potential of the alloy, reducing the corrosion current density, which can significantly improve the corrosion resistance. The corrosion current density (Icorr) of In-containing Cu-based bulk amorphous alloys is about one order of magnitude lower than that of In-free Cu-based bulk amorphous alloys. Further, the use of an appropriate amount of In instead of Cu can further improve the corrosion resistance. But excessive addition of In is not conducive to the formation of Zr-rich protective film, thereby reducing the corrosion resistance of the alloy.