激光共聚焦扫描显微镜在腐蚀形貌表征中的应用
Application of Laser Confocal Scanning Microscope in Characterization of Corrosion Morphology
摘 要
对N80钢进行了全面腐蚀和沟槽腐蚀试验，采用激光共聚焦扫描显微镜（LSCM）表征其表面的腐蚀形貌，并与宏观观察、扫描电镜和金相显微镜等方法进行了比较。结果表明：利用LSCM分析能够更直观和客观地找到局部腐蚀和腐蚀坑深处，仪器自带标尺还可直接和便捷地测量坑深，由此计算的沟槽腐蚀敏感系数更可靠。
腐蚀形貌表征
沟槽腐蚀
局部腐蚀
全面腐蚀
laserized confocal scanning microscopy (LSCM)
corrosion morphology characterization
grooving corrosion
localized corrosion
general corrosion
Abstract
General corrosion test and grooving corrosion test were performed to N80 steel. The corrosion morphology of the surface of N80 steel was characterized by laser confocal scanning microscopy (LCSM) in comparison with the methods of macro observation, scanning electron microscopy and metallurgical microscopy. The results show that using LCSM can find localized corrosion and deep corrosion pit more visually and objectively. The ruler attached to the instrument can be used to measure the depths of pits directly and conveniently. So the grooving corrosion sensitivity coefficient calculated according to the parameters tested by LSCM is more reliable.
中图分类号 TG174.37 DOI 10.11973/fsyfh-201808006
所属栏目 试验研究
基金项目 陕西省社会发展科技攻关项目（2016SF-429）
收稿日期 2017/2/9
修改稿日期
网络出版日期
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引用该论文: ZHAO Jun,REN Yongfeng. Application of Laser Confocal Scanning Microscope in Characterization of Corrosion Morphology[J]. Corrosion & Protection, 2018, 39(8): 599
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【8】LIU H W,GU T Y,ZHANG G A,et al. Corrosion inhibition of carbon steel in CO2-containing oilfield produced water in the presence of iron-oxidizing bacteria and inhibitors[J]. Corrosion Science,2016,105:149-160.
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【12】SLATER C,DAVIS C. Using confocal scanning laser microscopy to characterise as-cast microstructures using cooling rates representative of thin slab direct cast steels[J]. La Metallurgia Italiana,2016(2):21-28.
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