Ti6Al4V钛合金渗碳层在HF中的腐蚀行为

李坤茂,刘静,张晓燕,李宏,代燕

Corrosion Behavior of Carburized Ti6Al4V Ti-alloy in HF Solution

Kunmao Li,Jing LIU,Xiaoyan ZHANG,Hong LI,Yan DAI

表1 极化曲线的Tafel拟合参数

Table 1 Tafel fitting parameters of polarization curve

Sample Ecorr/V Icorr/mA·cm-2 Rp/Ω·cm2 V/g·m-2·h-1 βa/mV βc/mV Original sample 1 -0.95 3.98 6.18 4.65×10-10 10 067 681.0 2 -0.94 4.10 6.36 10 802.2 3 -0.91 4.5 5.71 850℃ 1 -0.74 3.51 7.43 3.93×10-10 721.4 584.6 2 -0.73 3.48 7.50 3 -0.73 3.75 6.95 1 -7.02 2.92 8.93 3.82×10-10 29906312.0 6610.3 880℃ 2 -0.69 2.71 9.64 3 -0.69 2.87 9.11 1 -0.68 1.35 19.30 3.3×10-10 534.1 910℃ 2 -0.68 1.65 15.80 2076667264.0 3 -0.70 1.71 15.20