建立了恒电位原位图象采集系统和测试方法用VisualC＋＋编制的程序对304不锈钢恒电位过程图象进行分析结果表明，在蚀孔出现过程中图象的灰度变化与蚀孔的产生和发展有直接关系当发生孔蚀时，灰度值向小的方向移动，灰度统计直方图上出现双峰.通过分析电化学测试参数与图象信息得知两者之间存在一定的相关性
A method for grabbing and analyzing in-situ images was established to study pitting corrosion in 304 stainless steel. Using a self-developed Visual C++ program, images obtained upon potentiostatic polarization were analyzed. It was found that there was a liner relationship between pitting ratio and reaction electric quantity. Besides, lots of small pits became a larger pit, and grays moved towards smaller values and double peaks were observed on the gray histograms when pitting corrosion happened.
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