用动电位极化曲线和Mott-Schottky分析电化学测试手段,研究了磁控溅射K52高温合金纳米涂层在3.5%NaCl溶液中的电化学腐蚀行为.结果表明,在3.5%NaCl溶液中,纳米化虽然没有改变K52合金表面钝化膜的半导体类型(p型),但是改善了钝化膜的致密度性,降低了钝化膜中的载流子密度,提高了钝化膜的稳定性.所以,纳米涂层更耐氯离子侵蚀.
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