摘要
The phenomenon, characteristics and influence factors of dechromisation of a Cu-Cr alloy in acid solutions containing Cl^- were studied by means of metallographic observation, SEM/EDX, TEM and XRD. The mechanism of dechromisation of Cu-Cr alloy was discussed. The results show that dechromisation of the Cu-Cr alloy occurs at a certain temperature in solutions with H^+ and Cl^- simultaneously. The corrosion starts initially at the interfaces between Cu phase and Cr phase, then develops gradually into the centers of Cr phase. It is also revealed that dechromisation rates of the Cu-Cr alloy increase with increasing concentration of H^+ or Cl^-, and temperature of the solutions.
The phenomenon, characteristics and influence factors of dechromisation of a Cu-Cr alloy in acid solutions containing Cl^- were studied by means of metallographic observation, SEM/EDX, TEM and XRD. The mechanism of dechromisation of Cu-Cr alloy was discussed. The results show that dechromisation of the Cu-Cr alloy occurs at a certain temperature in solutions with H^+ and Cl^- simultaneously. The corrosion starts initially at the interfaces between Cu phase and Cr phase, then develops gradually into the centers of Cr phase. It is also revealed that dechromisation rates of the Cu-Cr alloy increase with increasing concentration of H^+ or Cl^-, and temperature of the solutions.
出处
《中国有色金属学会会刊：英文版》
CSCD
2004年第3期520-524,共5页
Transactions of Nonferrous Metals Society of China
基金
ProjectsupportedbyKeyLaboratoryofHebeiProvince ,China
project(YDJJ2 0 0 3 0 3 2 )supportedbytheScienceandTech nologyDevelopmentFoundationofYanshanUniversity
