用电弧离子镀设备,在医用不锈钢基体上沉积Ti/TiN纳米多层薄膜,考察薄膜在Troyde′s模拟体液中的抗腐蚀性能.结果表明,在中性与酸性模拟体液中316L+Ti/TiN(45/45s)体系的击穿电位分别提高5倍和2倍,腐蚀电流密度为基体的1/8与1/3,明显降低发生局部腐蚀的敏感性,但滞后环的出现说明薄膜被击穿后自修复能力较差.分析说明薄膜的纳米多层结构与纯Ti层的存在可有效提高医用不锈钢在Troyde′s模拟体液中的抗点蚀能力.
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