Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 4 No. 2 June 1994|
（Deoartment of Materials Science and Engineering; Zhejiang University; Hang zhou 310027）
Abstract:The chlorination behavior of preoxidized Ni-3.5Al alloy at 575C was investigated. The corrosion resistance of preoxidized alloy against chlorination had been improved due to the formation of protective NiO/Al2O3 scale. In chlorine atmosphere at high temperature.chlorine attackedthe oxide scale by three mechanisms:mechanical damage by volatile chlorides,scale pitting andspalling by chlorine dissolving in the scale and oxides being displaced by chlorides.
Key words: chlorination oxide scale chloride vapor pressure preoxidization