中國有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 4 No. 2 June 1994 |
HIGH TEMPERATURE CORROSION OF PREOXIDIZED Ni-Al ALLOY IN CHLORINE
Tu Jiangping ; Li Zhizhang ; Mao Zhiyuan
（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
