热处理工艺对Al0.5CoCrFeNi高熵合金在不同介质下腐蚀行为及力学性能的影响

段敬民, 董勇, 缪东美, 杨玉婧, 毛凌波, 章争荣

Corrosion Behavior in Different Media and Mechanical Properties of Al0.5CoCrFeNi High-entropy Alloy After Heat Treatment

DUAN Jingmin, DONG Yong, MIAO Dongmei, YANG Yujing, MAO Lingbo, ZHANG Zhengrong

表4 铸态和轧制后不同温度热处理态合金在0.5 mol/L NaOH溶液中极化曲线和阻抗谱拟合参数

Table 4 Fitting parameters of polarization curves and EIS of as-cast alloy and as-rolled alloys with heat treatment at different temperatures in 0.5 mol/L NaOH solution

Alloys Ecorr / V Icorr / A·cm-2 Rs / Ω·cm2 CPE1 / 10-5 Ω-1·cm-2·s n n1 R1 / kΩ·cm2 Σ λ2 As-cast -0.58 1.05 13.67 2.26 0.96 218.29 8.62 × 10-4 800 ℃ -0.59 1.17 10.59 2.43 0.95 186.84 5.31 × 10-4 1000 ℃ -0.57 0.94 11.66 2.48 0.95 216.57 6.96 × 10-4 1200 ℃ -0.58 1.19 11.29 2.53 0.95 205.30 3.46 × 10-4