一种低成本第三代单晶高温合金的高温氧化行为

李永梅, 谭子昊, 王新广, 陶稀鹏, 杨彦红, 刘纪德, 刘金来, 李金国, 周亦胄, 孙晓峰

Oxidation Behavior of a Low-Cost Third-Generation Ni-Based Single-Crystal Superalloy

LI Yongmei, TAN Zihao, WANG Xinguang, TAO Xipeng, YANG Yanhong, LIU Jide, LIU Jinlai, LI Jinguo, ZHOU Yizhou, SUN Xiaofeng

图7 合金经1120 ℃氧化200 h的氧化动力学曲线

Fig.7 Kinetic curves of experimental alloys after oxidizing at 1120 ^oC for 200 h (Δm—oxidation mass gain per unit area, n—oxidation reaction index, $k_{p}^{1}$ and $k_{p}^{2}$ indicate the parabolic oxidation rate constants for the first 40 h and after 40 h, respectively)
(a) logarithmic of Δmvs time (b) Δm²vs time