热处理对ZnAlMg镀层组织与耐腐蚀性能的影响

蒋光锐, 刘广会, 商婷

Effect of Heat Treatment Process on Microstructure and Corrosion Resistance of ZnAlMg Coating

JIANG Guangrui, LIU Guanghui, SHANG Ting

表2 等效电路的拟合参数

Table 2 Fitted parameters for the equivalent circuit

Sample Rs / Ω·cm2 Qdl, Y Qdl, n Rt / Ω·cm2 C1 / μF·cm-2 R1 / Ω·cm2 YW As-received 31.0 8.27 × 10-6 0.75 2641 67 891 0.0067 150oC 39.1 8.74 × 10-6 0.84 3456 190 899 - 175oC 30.7 9.04 × 10-6 0.85 4276 219 512 - 200oC 30.1 8.37 × 10-6 0.83 7696 290 1040 - 225oC 28.0 1.20 × 10-5 0.64 8530 56 7242 250oC 25.7 1.91 × 10-5 0.70 10570 159 7806 -