摘要
针对两种典型钛制化工设备(换热器管束和筒体)的腐蚀破坏进行失效分析,采用宏观和微观腐蚀形态和结构、材质成分和金相显微组织分析等技术手段分析工业纯钛和钛钯合金腐蚀破坏的原因.结果表明,两种典型钛制化工设备的腐蚀破坏均为吸氢腐蚀破坏,系由钛材从环境腐蚀介质中吸氢后在基体内部形成大量脆性TiH2相而引起的脆性所致,并最终因钛材表面发生脆性粉化和剥落而导致破坏.
Failure analysis of two chemical equipments made of titanium alloy were conducted by means of macroscopic and microscopic analysis ,chemical composition analysis as well as microstructure analysis. The results showed that both of the two chemical equipments made of titanium failed because of hydrogen corrosion. The titanium absorbed hydrogen and led to formation of large amount of TiH2 ,which then caused the corrosion failures such as brittle breaking and flaking off on the surface of titanium equipments.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2009年第2期137-139,共3页
Corrosion Science and Protection Technology
关键词
钛合金
换热器
氢腐蚀
失效分析
titanium alloy
heat exchanger
hydrogen corrosion
tailure analysis
