磷酸钠浓度对40Cr钢耐蚀性能的影响
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周炜龙, 郭玉冰, 胡梦茹, 沈凯杰, 杨正桓, 谢林君
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Effect of Sodium Phosphate Concentration on Corrosion Resistance of 40Cr Steel
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ZHOU Weilong, GUO Yubing, HU Mengru, SHEN Kaijie, YANG Zhenghuan, XIE Linjun
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表3 40Cr钢在不同浓度Na3PO4中浸泡72 h内的Ecorr与Icorr
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Table 3 Ecorr and Icorr of 40Cr steel after immersion for different time in Na3PO4 solutions
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| Time / h | 1 × 10-4 mol·L-1 | | 1 × 10-3 mol·L-1 | | 1 × 10-2 mol·L-1 |
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| Ecorr / V | Icorr / µA·cm-2 | | Ecorr / V | Icorr / µA·cm-2 | | Ecorr / V | Icorr / µA·cm-2 | | 2 | -0.720 | 7.533 | | -0.605 | 6.628 | | -0.419 | 5.064 | | 4 | -0.743 | 8.394 | | -0.651 | 6.935 | | -0.418 | 4.605 | | 6 | -0.755 | 9.288 | | -0.653 | 7.412 | | -0.412 | 4.445 | | 8 | -0.763 | 10.150 | | -0.658 | 7.943 | | -0.409 | 4.444 | | 16 | -0.759 | 12.140 | | -0.703 | 10.490 | | -0.407 | 4.421 | | 32 | -0.765 | 16.150 | | -0.702 | 11.920 | | -0.405 | 4.300 | | 48 | -0.778 | 18.750 | | -0.731 | 13.870 | | -0.396 | 3.984 | | 72 | -0.791 | 26.510 | | -0.754 | 20.130 | | -0.392 | 3.687 |
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