摘要
通过对失效断口的宏观形貌和金相显微组织分析,并对断口腐蚀产物进行了能谱分析(EDS),分析了制氢转化炉上尾管下加强接头F304H开裂原因。结果表明,加强接头开裂主要原因应为连多硫酸应力腐蚀开裂,氯离子对开裂起到了促进作用。
By means of macro morphology analysis, metallographic microstructure analysis, port analysis and EDS energy spectrum analysis, cracking of reinforced joint F304 H in a hydrogen converter was analyzed. It was shown that the dominant cracking mechanism was polythionic acid stress corrosion, in which chloride ion played a catalytic role.
作者
吉章红
JI Zhanghong(Petrochemical Engineering Quality Supervision Station,Beijing 100728,China)
出处
《石油化工腐蚀与防护》
CAS
2019年第6期44-47,共4页
Corrosion & Protection In Petrochemical Industry
关键词
制氢转化炉
上尾管下加强接头
连多硫酸
应力腐蚀开裂
hydrogen reformer
reinforced joint in hydrogen converter tailpipe
polysulfuric acid
stress corrosion cracking
