Mn-Cr-O和Mn-Al-O尖晶石碳化行为研究

中国腐蚀与防护学报

2011, Vol. 31

Issue (1): 18-22

研究报告

本期目录 | 过刊浏览

Mn-Cr-O和Mn-Al-O尖晶石碳化行为研究

袁比飞¹,郑雁军¹,荆栋¹,崔立山¹,卢贵武²

1. 中国石油大学（北京）材料科学与工程系北京 102249
2. 中国石油大学（北京）物理系北京 102249

CARBURIZATION BEHAVIORS OF Mn-Cr-O AND Mn-Al-O SPINELS

YUAN Bifei¹, ZHENG Yanjun¹, JING Dong¹, CUI Lishan¹, LU Guiwu²

1. Department of Materials Science and Engineering, China University of Petroleum (Beijing), Beijing 102249
2. Department of Physics, China University of Petroleum (Beijing), Beijing 102249

全文: PDF(675 KB)

摘要: 研究了Mn-Cr-O和Mn-Al-O尖晶石的碳化行为，探索不同金属元素计量比对碳化行为的影响。研究表明，当Mn过量时Mn-Cr-O尖晶石可以保持尖晶石结构，但是当Cr过量时则出现Cr₂O₃第二相。Mn-Al-O尖晶石中MnO和Al₂O₃的溶解度都很小，无论Mn还是Al过量都会产生第二相氧化物。Mn-Cr-O和Mn-Al-O 尖晶石在碳化气氛下都会发生明显的碳化。成分对尖晶石的抗碳化能力有明显影响，偏离化学计量比会造成抗碳化能力的降低。相对而言Mn-Al-O尖晶石具有更强的抗碳化能力。

关键词 ：尖晶石, 碳化, MnCr₂O₄, MnAl₂O₄, 结焦

Abstract：The carburization behaviors of Mn-Cr-O and Mn-Al-O spinels were studied in this paper. Metal stoichiometric ratio was found to have significant effect on the carburization behaviors. A higher amount of Mn than the stoichiometric ratio keeps the spinel structure stable, however a higher amount of Cr than the stoichiometric ratio induces the appearance of secondary Cr₂O₃ phase. In Mn-Al-O system, both MnO and Al₂O₃ have little solubility and excess Mn or Al induces the appearance of secondary phase. In carburization atmosphere both Mn-Cr-O and Mn-Al-O spinel were carburized. It is found when the chemical composition deviates the stoichiometric ratio the carburization resistance ability decreases. Mn-Al-O shows a better carburization resistance than Mn-Cr-O.

Key words： spinel carburization MnCr₂O₄,MnAl₂O₄ coking

收稿日期: 2010-07-26

ZTFLH:

TG174.451

通讯作者: 袁比飞 E-mail: yuanbifei@gmail.com

Corresponding author: YUAN Bifei E-mail: yuanbifei@gmail.com

作者简介: 袁比飞，男，1974年生，工程师，博士生，研究方向为材料的腐蚀与防护

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引用本文:

袁比飞,郑雁军,荆栋,崔立山,卢贵武. Mn-Cr-O和Mn-Al-O尖晶石碳化行为研究[J]. 中国腐蚀与防护学报, 2011, 31(1): 18-22.
ZHENG Yan-Jun, YUAN Bi-Fei, JING Dong, CUI Li-Shan, LV Gui-Wu. CARBURIZATION BEHAVIORS OF Mn-Cr-O AND Mn-Al-O SPINELS. J Chin Soc Corr Pro, 2011, 31(1): 18-22.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2011/V31/I1/18

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