304不锈钢孔蚀过程原位图象采集与分析  

IN-SITU IMAGE GRAB AND ANALYSIS FOR PITTING PROCESS OF 304 STAINLESS STEEL

作　　者：苏润西[1] 宋诗哲[1] 

机构地区：[1]天津大学材料学院,天津300072

出　　处：《金属学报》1998年第9期966-970,共5页Acta Metallurgica Sinica

基　　金：国家自然科学基金!59571051;金属腐蚀与防护国家重点实验室项目

摘　　要：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.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.

关 键 词：图象处理 不锈钢 孔蚀 图象识别 计算机应用 

分 类 号：TG172.9[金属学及工艺—金属表面处理] TG142.71[金属学及工艺—金属学]