| 304不锈钢孔蚀过程原位图象采集与分析 |
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| 引用本文： | 苏润西,宋诗哲. 304不锈钢孔蚀过程原位图象采集与分析[J]. 金属学报, 1998, 34(9): 966-970 |
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| 作者姓名： | 苏润西 宋诗哲 |
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| 作者单位： | 天津大学材料学院!天津，300072 |
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| 基金项目： | 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 |
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| 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了分析，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的一定的相关性。
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| 关 键 词： | 图象处理 不锈钢 孔蚀 图象识别 计算机应用 |
| 收稿时间： | 1998-09-18 |
| 修稿时间： | 1998-09-18 |
IN-SITU IMAGE GRAB AND ANALYSIS FOR PITTING PROCESS OF 304 STAINLESS STEEL |
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| SU Runxi,SONG Shizhe Correspondent. SONG Shizhe,professor,Tel: ,Fax: ,E-mail: szsong@tju. edu. cn. IN-SITU IMAGE GRAB AND ANALYSIS FOR PITTING PROCESS OF 304 STAINLESS STEEL[J]. Acta Metallurgica Sinica, 1998, 34(9): 966-970 |
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| Authors: | SU Runxi SONG Shizhe Correspondent. SONG Shizhe professor Tel: Fax: E-mail: szsong@tju. edu. cn |
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| Affiliation: | SU Runxi,SONG Shizhe (School of Materials Science and Engineering,Tianjin University,Tianjin )Correspondent. SONG Shizhe,professor,Tel: (),Fax: (),E-mail: szsong@tju. edu. cn |
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| Abstract: | 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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| Keywords: | image processing stainless steel pitting |
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