研究了Ni19Co9Mo5粉末冶金工件黑色高温锰系磷化膜的生长过程,用扫描电子显微镜(SEM)观察了不同磷化时间下磷化膜的形貌,用能谱分析仪(EDS)分析了磷化膜成分,测量了膜重随时间变化的曲线.结果表明:磷化膜晶粒不呈传统的块状,而为棒状或条状;磷化膜的生长分为基体腐蚀、成膜和膜重增加3个阶段;磷化完成大约需要15 min.
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