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本文应用光声光谱方法研究了钢铁表面的磷化过程．根据在不同配方下，磷化不同时间后钢铁表面生成的磷化膜的先声光谱，分析了磷化膜形成过程中的结构变化．表明光声光谱技术是研究表面现象的一种非常有用的工具。
In this paper, photoacoustic spectroscopy was used to study the phosphating process on steel surface. According to the precursor spectra of the phosphating film formed on the steel surface after different times of phosphating under different formulations, the structural changes during the formation of the phosphating film were analyzed. Show that photoacoustic spectroscopy technology is a very useful tool for studying surface phenomena.