热处理对激光选区熔化Ti6Al4V合金电化学腐蚀行为的影响

张瑞,李雨,关蕾,王冠,王福雨

Effect of Heat Treatment on Electrochemical Corrosion Behavior of Selective Laser Melted Ti6Al4V Alloy

Rui ZHANG,Yu LI,Lei GUAN,Guan WANG,Fuyu WANG

表2 SLM态及HT态Ti6Al4V合金在0.6 V(vs SCE) 下极化1 h后等效电路拟合的元件参数

Table 2 Electrical parameters attained by fitting EIS data of SLM and HT Ti6Al4V alloy samples after polarization for 1 h under 0.6 V (vs SCE)

Alloy	R_s / Ω·cm²	R_ct / kΩ·cm²	Q_dl / μΩ^-1·sⁿ·cm^-2	n₁	R_f / kΩ·cm²	Q_f / μΩ^-1·sⁿ·cm^-2	n₂
SLM	6.4±0.4	3.3±0.8	3.5±1.0	0.87±0.01	57.4±6.1	12.1±2.8	0.91±0.01
HT	6.9±0.8	7.8±0.6	2.2±0.7	0.88±0.01	227.6±18.3	9.2±1.5	0.92±0.01