等通道角挤压制备超细晶纯<strong>Ti</strong>的腐蚀性能研究

等通道角挤压制备超细晶纯Ti的腐蚀性能研究

李鑫,董月成,淡振华,常辉,方志刚,郭艳华

Corrosion Behavior of Ultrafine Grained Pure Ti Processed by Equal Channel Angular Pressing

Xin LI,Yuecheng DONG,Zhenhua DAN,Hui CHANG,Zhigang FANG,Yanhua GUO

表1 CG-Ti和ECAP 2、3、4道次后UFG-Ti的电化学腐蚀性能

Table 1 Electrochemical properties of CG-Ti, ECAP 2P, ECAP 3P and ECAP 4P

Sample	E_corr V	E_pit V	i_pass μA·cm^-2	i_corr μA·cm^-2	R mm·a^-1
CG-Ti	-0.271	0.006	0.898	0.899	0.00781
ECAP 2P	-0.222	-0.015	0.293	0.186	0.00162
ECAP 3P	-0.286	0.135	0.158	0.136	0.00118
ECAP 4P	-0.213	0.129	0.219	0.179	0.00155