氧化膜结构及内应力对新锆合金腐蚀机理的影响

章海霞, 李中奎, 周廉, 许并社, 王永祯

EFFECTS OF STRUCTURE AND INTERNAL STRESSES IN OXIDE FILMS ON CORROSION MECHANISM OF NEW ZIRCONIUM ALLOY

ZHANG Haixia, LI Zhongkui, ZHOU Lian, XU Bingshe, WANG Yongzhen

表1 NZ2合金在360 ℃含锂水和400 ℃蒸汽中腐蚀不同时间后的参数

Table 1 Parameters of NZ2 alloy corroded in 360 ℃ lithiated water and 400 ℃ steam for different times

Condition Time / d Mass gain / (mgcm-2) Oxide film thickness μm p Stress / GPa 360 ℃ 3 0.1288 0.9 - - lithiated water 14 0.1850 1.2 -0.01318 -2.2 28 0.2285 1.5 -0.01879 -3.1 42 0.2592 1.7 -0.01695 -2.8 70 0.3020 2.0 -0.02284 -3.8 98 0.3453 2.3 -0.01491 -2.5 126 0.3785 2.5 -0.01483 -2.4 154 0.5856 3.9 -0.01113 -1.8 182 0.6808 4.5 - - 210 0.7290 4.9 -0.01011 -1.7 238 0.7728 5.2 -0.01171 -1.9 266 0.9000 6.0 -0.01093 -1.8 294 1.0415 6.9 -0.01022 -1.7 400 ℃ steam 3 0.1700 1.1 -0.01195 -2.0 14 0.2614 1.7 -0.01521 -2.5 28 0.3242 2.2 -0.01740 -2.9 42 0.3747 2.5 -0.01303 -2.1 70 0.5163 3.4 - - 98 0.6232 4.2 -0.00859 -1.4 126 0.7297 4.9 - - 154 0.8247 5.5 -0.00981 -1.6 238 1.1614 7.7 -0.00980 -1.6 266 1.1965 8.0 -0.00929 -1.5