Effect of Chromium Content Change on Corrosion Resistance of Chromium-Manganese Steel
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摘要: 采用失重法、电化学极化曲线法、扫描电镜(SEM)、X射线衍射(XRD)等分析手段,研究了铬含量变化对铬锰钢在酸性环境中耐蚀性的影响及其机制,并确定了最佳铬含量。结果表明:铬质量分数为10%~15%时,随着铬含量的增加,铬锰钢表面形成的Cr2O3保护膜越来越密集,并附着在钢表面,对其起到保护作用,但继续增加铬含量,铬锰钢腐蚀速率几乎不变,因此确定铬锰钢中最佳铬质量分数为14%。Abstract: By means of weight-loss method, electrochemical polarization curve method, scanning electron microscopy (SEM) and X-ray diffraction (XRD), the effects of chromium content on the corrosion resistance of chromium-manganese steel and its mechanism in an acidic environment were studied, and the optimal chromium content was determined. The results show that when the mass fraction of chromium was in the range of 10%-15%, the Cr2O3 protective film forming on and adhering to the surface of chromium-manganese steel became denser and denser with the increase of chromium content, which played a protective role. However, increasing the chromium content continuously, the corrosion rate of chromium-manganese steel was almost unchanged, so the optimal chromium content in chromium-manganese steel was determined to be 14% (mass fraction).
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Keywords:
- chromium-manganese stainless steel /
- H2SO4 /
- corrosion resistance /
- chromium
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[1] 严旺生. 铬锰系不锈钢发展与电解金属锰[J]. 中国锰业,2005,23(3):7-10. [2] 陆世英. 200系列(锰系)不锈钢的主要进展[J]. 不锈,2004(1):4-13. [3] 黄蓉芳,李谋成. 201型不锈钢在酸性食物模拟环境中的腐蚀行为[J]. 腐蚀与防护,2016,37(1):12-15,21. [4] 齐达,李晶,董力,等. 节镍型不锈钢的耐腐蚀性能比较[J]. 腐蚀与防护,2010,31(10):756-759,793. [5] QU H P,CHEN H T,LANG Y P. Influence of Mn-Ni alloying elements on surface film and pitting resistance of Cr-Mn austenitic stainless steels[J]. Construction and Building Materials,2016,125:427-437.
[6] 戴安伦,张艳,金云学,等. Cu对铬锰钢在Cl-环境中腐蚀行为的影响[J]. 江苏科技大学学报(自然科学版),2009,23(6):504-508. [7] 王文博,袁书强,张贵才,等. 低成本深冲用200系列不锈钢的研制[J]. 金属热处理,2011,36(1):46-48. [8] 王耘涛,布茂东. 低镍和无镍奥氏体不锈钢的研究现状及进展[J]. 金属热处理,2013,38(1):15-20. [9] 金云学,张艳,戴安伦,等. 铜对铬锰不锈钢耐蚀性的影响[J]. 腐蚀与防护,2009,30(10):713-716. [10] 白新德. 材料腐蚀与控制[M]. 北京:清华大学出版社,2005:36.
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