通过金属表面低温镀铁层中存在微裂纹现象的观察与分析,作者认为,微裂纹系由氢气的析出与电沉积过程中形成的内应力两种因素所致。以氢气析出造成的微裂纹为主。电镀工艺参数中温度对微裂纹的多少影响极大。经X射线分析发现,纯铁镀层的衍射峰有异常现象——(211)峰值远远强于(110)的峰值,说明存在有(211)组织结构。 Through the observation and analysis of the existence of micro-cracks in the low-temperature iron-plating layer on the metal surface, the author thinks that the micro-cracks are caused by the hydrogen evolution and the internal stress formed in the electrodeposition process. Hydrogen evolution caused by the main crack-based. Plating process parameters in the temperature on the number of microcracks greatly affected. The X-ray diffraction analysis showed that the diffraction peak of the pure iron coating has an anomalous phenomenon - the peak value of (211) is much higher than the peak value of (110), indicating the existence of the (211) structure.