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对于经２００～７００℃热处理的化学镀Ｎｉ－Ｍｏ－Ｐ的合金镀层，测试了其在５％ＮａＣｌ溶液中的腐蚀性能。结果表明，随温度的提高，合金的自腐蚀电位均正向移动；腐蚀速度随温度的提高，呈现先升后降的变化趋势。经２００～６００℃热处理，都将使合金的耐蚀性有不同程度的下降。合金结构中晶格和相的变化，保护性氧化膜的生成，以及合金与基体间Ｆｅ－Ｎｉ－Ｍｏ－Ｐ扩散层的形成等，分别对合金耐蚀性能变化起了重要作用。
For the electroless Ni-Mo-P alloy coating which was heat-treated at 200 ~ 700 ℃, its corrosion performance in 5% NaCl solution was tested. The results show that with the increase of temperature, the self-corrosion potential of the alloy moves in a positive direction. The corrosion rate increases with the increase of temperature, and then increases first and then decreases. After 200 ~ 600 ℃ heat treatment, will make the alloy corrosion resistance in varying degrees of decline. The changes of the lattice and phase in the alloy structure, the formation of the protective oxide film and the formation of the Fe-Ni-Mo-P diffusion layer between the alloy and the matrix respectively play important roles in the corrosion resistance of the alloy.