摘要
微生物腐蚀造成设备快速破坏，影响系统功能，甚至发生工伤事故，已引起人们的重视。笔者研究了微生物对３０４Ｌ不锈钢焊接缺陷的腐蚀影响。在微生物腐蚀（ＭＩＣ）的试验的过程中，对试样的开路电势（ＯＣＰ）进行了测试。结果表明，微生物的存在会促使电势跃迁。当试样发生点蚀时，开路电势又会急剧下降。在一系列的焊接缺陷中，金色的氧化色对微生物腐蚀最敏感。笔者还对点蚀坑上的生物包的形貌。
The impact of welding defects on microbiologically influenced corrosion(MIC) is studied. The open circuit potential (OCP) was measured during MIC test. It was found that OCP shifted to a higher level when the system was inoculated with bacteria and it decreased dramatically when MIC started. Among a series of welding defects golden heat tint was found the most susceptible to MIC. The tubercles over pitting were observed with SEM. Some elements inside of the tubercles were analyzed with EDXA. Microbiological analysis of a corroded and a non-corroded sample revealed no significant difference between them with the exception of the number of the manganese-oxidizing bacteria.
出处
《中国安全科学学报》
CAS
CSCD
1998年第3期38-41,共4页
China Safety Science Journal
关键词
微生物腐蚀
不锈钢
焊接
缺陷
腐蚀
Microbiologically influenced corrosion(MIC) Stainless steel Weld
