High temperature oxidation of Cr-Mo-V tool steel in carbon dioxide

被引：7
|
作者：
Chaliampalias, D. [1 ]
Vourlias, G. [1 ]
Pavlidou, E. [1 ]
Chrissafis, K. [1 ]
机构：
[1] Aristotle Univ Thessaloniki, GR-54006 Thessaloniki, Greece
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2013年 / 113卷 / 03期
关键词：
Metals and Alloys; Microstructure; Scanning Electron Microscopy; Thermogravimetric measurements; ALLOYS; METAL;
D O I：
10.1007/s10973-013-2947-0
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This study aims to examine the oxidation resistance and kinetics of Cr, Mo, and V containing tool steel (Calmax) when exposed in CO2 high temperature environment by thermogravimetric measurements, X-ray diffraction analysis, and microscopic observation. The tool steel samples begin to oxidize at 480 A degrees C while over 600 A degrees C, the oxidation rate increases significantly. Finally, at 900 A degrees C, the oxidation rate is significantly high. The activation energy of the oxidation was calculated as 160.1 kJ mol(-1). Microscopically, the thickness of the scale was found to increase with the exposure temperature, and the as formed scales consisted of two distinguishable oxide layers.
引用
收藏
页码：1309 / 1315
页数：7
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