复合催化对常温磷化的影响

Affection of Composite Catalysis on the Ambient Temperature Phosphating

对常温锌系磷化液进行了研究,讨论了促进剂及其浓度等工艺参数对磷化膜质量的影响。结果表明:此磷化液在常温下20min即可在钢铁表面上生成一层均匀、致密、耐腐蚀性良好的磷化膜。通过扫描电子显微镜(SEM)分析技术观察了磷化膜的微观形貌,通过测定膜厚验证了磷化液的成膜速度和工艺的效果。用硫酸铜点滴试验检测了磷化膜的致密性和耐腐蚀性,确定了常温锌系磷化液的配方和操作工艺。

A type of Zinc sceries phosphate solution is investigated under ordinary temperature. Effects of process parameters, including accelerators and their contents etc. are discussed. Results show that the uniform bonderizing film with high corrosion resistance can be deposited at ambient temperature during four or five minutes. Several measurements have been used to test the quality of the bonderizing film. The microstructures were scanned by the Scanning Electron Microscope（SEM）. The thickness of the film was measured by the Thickness Testing Equipment. The capability of corrosion resistance was tested by the CuSO4 drops testing. After analyzing all the date of the test the best bonderizing solution and technology have been fixed.