激光熔凝表面改性铁基粉末冶金材料腐蚀防护机理

李勇, 王靖超, 胡勇, 高尧, 李贵铭, 陈少武, 柴利强, 缪星旭

Influence of Surface Laser Rapid Melting-solidifying Treatment on Corrosion Performance of Powder Metallurgy Iron-based Materials

LI Yong, WANG Jingchao, HU Yong, GAO Yao, LI Guiming, CHEN Shaowu, CHAI Liqiang, MIAO Xingxu

表1 基体和激光熔凝处理试样在3.5%NaCl溶液中的等效电路参数表

Table 1 Equivalent circuit parameters of substrate and laser-melted specimens in 3.5%NaCl solution

Sample Rs / Ω·cm2 Y0 / F·cm-2 n Rp / Ω·cm2 Substrate 5.898 0.0012385 0.74542 605.2 35% overlapping rate 7.391 0.0011782 0.68917 936.1 50% overlapping rate 7.957 0.0003953 0.80866 967.9 65% overlapping rate 7.426 0.0004149 0.80911 1198.0