Nb2N涂层制备及其耐腐蚀性能研究

史昆玉,张进中,张毅,万毅

Preparation and Corrosion Resistance of Nb2N Coating on TC4 Ti-alloy

Kunyu SHI,Jinzhong ZHANG,Yi ZHANG,Yi WAN

表2 阻抗谱等效电路中各参比元件拟合值

Table 2 Fitted values of various electrochemical parameters for Nb2N coating and TC4 alloy

Sample Rct / Ω·cm2 Q1 / Ω-1·cm-2·sn n1 R1 / Ω·cm2 Q2 / Ω-1·cm-2·sn n2 R2 / Ω·cm2 χ2 Nb2N coating 25.01 8.82×10-8 0.8947 480.09 8.928×10-6 0.98 5.136×107 1.49×10-3 TC4 26.29 4.549×10-7 0.819 214.21 1.125×10-5 0.90 6.935×106 1.29×10-3