20SiMn钢在恒定pH值的碳酸盐溶液中的腐蚀行为*

曹凤婷, 魏洁, 董俊华, 柯伟

CORROSION BEHAVIOR OF 20SiMn STEEL REBAR IN CARBONATE/BICARBONATE SOLUTIONS WITH THE SAME pH VALUE

CAO Fengting, WEI Jie, DONG Junhua, KE Wei

表2 0.01 mol/L 碳酸盐缓冲液中的EIS 拟合结果

Table 2 EIS fitting results of the parameters in 0.01 mol/L carbonate buffer solution

Immerse time d Rs Ω·cm2 Qct Ω-1·cm-2·sn nct Rct Ω·cm2 W Ω-1·cm-2·s0.5 1 28.65 8.905×10-4 0.7949 2348 0.00955 2 59.61 0.001 0.7961 2027 0.00811 3 68.75 9.561×10-4 0.7811 1776 0.01129 4 58.43 9.039×10-4 0.7756 1965 0.00694 5 75.14 9.633×10-4 0.7520 2186 0.00623 6 56.39 9.285×10-4 0.7552 2280 0.00439 7 64.84 8.534×10-4 0.7465 2371 0.00193