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中文摘要：
化学镀Ni—P二元合金镀层的耐蚀性与其组织结构、表面形态密切相关。实验获得磷质量分数11．54％的高磷镀层，镀态下为非晶态结构。300℃热处理后开始晶化，并在400℃热处理时完全晶化，镀层由非晶态的Ni相转变为Ni3P＋Ni混合稳定相。用原子力显微镜（AFM）对镀层表面观察发现，不同热处理下的镀层合金表面形态差别很大。形态的差异对镀层合金的耐蚀性有影响，特别是400℃热处理后，由于表面“纳米植被”的覆盖使得此时镀层合金的耐蚀性最优异。
英文摘要：
Corrosion resistance of electroless plating Ni-P binary alloy was closely related to its microstructure and surface morphology. High phosphorus coating with 11.54%P was obtained by experiment, which belonged to amorphous structure. Crystallization process of the microstructure started at 300 ℃, and completed at 400 ℃, thereafter nickel matrix phase transformed to Ni3P＋Ni mixed stable phase An Atomic Force Microscope was used to study the surface morphology of Ni-P coating before and after different heat treatments. It was found that the corrosion resistance was affected by the surface morphology of heated coatings. The corrosion resistance was best after 400 ℃ heat treatment because the ＂nano-plant＂ covered the coating surface .
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