Effect of Si on high temperature oxidation of 30Cr13 stainless steel

IF 3.1 2区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING
Hong-huan Mao, Xing Qi, Jing Cao, Li-cong An, Yi-tao Yang
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引用次数: 17

Abstract

The effect of Si on the high temperature oxidation behavior of the 30Cr13 martensitic stainless steels was investigated. The underlying mechanism was further discussed by oxidation kinetics curves, scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. It was observed that the addition of Si can significantly reduce the mass gain per unit area and the oxidation rate of the experimental steels. With the increase of Si content, the film surface composed of the wheat-like oxides turned into the small granular oxides after oxidation for 120 h. The SiO2 film formed on the metal substrate inhibited the outward diffusion of the metal cation and the inward diffusion of the oxygen anion; thus, the high temperature oxidation resistance was enhanced.

Si对30Cr13不锈钢高温氧化的影响
研究了Si对30Cr13马氏体不锈钢高温氧化行为的影响。通过氧化动力学曲线、扫描电镜(SEM)和x射线衍射(XRD)分析进一步探讨了其机理。结果表明,Si的加入可以显著降低实验钢的单位面积质量增益和氧化速率。随着Si含量的增加,氧化120 h后,由小麦状氧化物组成的膜表面变成小颗粒状氧化物,在金属基体上形成的SiO2膜抑制了金属阳离子向外扩散和氧阴离子向内扩散;从而提高了材料的耐高温氧化性。
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来源期刊
CiteScore
4.30
自引率
0.00%
发文量
2879
审稿时长
3.0 months
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