灰铸铁中温磷化工艺和磷酸盐晶体形貌

摘要

The high phosphorus gray iron specimens,taken from 135 diesel cylinder bush,were subjected to medium-temperature phosphating. The phosphating surface was surveyed by SEM. It was revealed that the phosphating film exhibits phosphate druse random distributed.The phosphating process,including composition of phosphating bath,phosphating temperature and time at temperature,will exert an appreciable influence on the nucleation,growth,morphology and performance of the phosphate crystals.%对取自135型柴油机气缸套的高磷灰铸铁试样进行了中温磷化处理。对磷化表面进行了扫描电镜观察。结果发现，磷化膜形态为无规律分布的磷酸盐晶簇。磷化工艺，包括磷化液成分、磷化温度和时间，对磷酸盐晶体的形核、生长、形态及性能有明显的影响。