采用电化学方法研究锆合金Zr-4在添加不同Cu2+浓度的0.5 mol/LNaCl溶液或0.5 mol/L Na2SO4中的腐 蚀行为,探讨不同浓度Cu2+对Zr-4合金腐蚀性能的影响,同时,在10 g/L Na2SiO3·9H2O+10 g/L Na4P2O7·10H2O 混合溶液中对Zr-4合金进行等离子电解氧化处理,并用极化曲线技术研究膜层的防护能力.结果表明:Cu2+能使Zr-4合金自腐蚀电位正移,降低极化曲线上钝化区的宽度,使得合金的抗孔蚀能力降低,腐蚀电流密度增加:在硫酸钠溶液中,Cu2+的添加没有使合金产生明显的孔蚀,这表明Zr-4合金的抗孔蚀能力下降是Cu2+和C(F)共同作用的结果；等离子电解氧化处理能够大幅度提高Zr-4合金的抗孔蚀能力.
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