环境因素对X100钢表面钝化膜性能的影响

赵阳, 梁平, 史艳华, 张云霞

Influence of Environmental Factors on Property of Passive Film Formed on X100 Pipeline Steel

ZHAO Yang, LIANG Ping, SHI Yanhua, ZHANG Yunxia

表7 不同条件下钝化膜的缺陷扩散系数

Table 7 Calculated diffusion coefficients of defects in the passive films under different conditions

Environmental parameter Experimental condition D0 / 10-17cm2s-1 Temperature 20 ℃ 1.755×10-17 40 ℃ 3.264×10-17 60 ℃ 5.147×10-17 pH 9.27 1.551×10-17 9.78 0.847×10-17 10.84 0.553×10-17 Cl- 0.001 mol/L 1.076×10-17 0.003 mol/L 1.906×10-17 0.005 mol/L 3.568×10-17