Hardness of oxide scales on Fe-Si alloys at room- and high-temperatures

被引：32
作者：
Amano, T. [1 ]
Okazaki, M.
Takezawa, Y.
Shiino, A.
Takeda, M.
Onishi, T.
Seto, K.
Ohkubo, A.
Shishido, T.
机构：
[1] Shonan Inst Technol, Fujisawa, Kanagawa 2518511, Japan
[2] Kobe Steel Ltd, Kobe, Hyogo 6512271, Japan
[3] JFE Steel Corp, Kawasaki, Kanagawa 2100855, Japan
[4] Tohoku Univ, IMR, Sendai, Miyagi 9808577, Japan
来源：
HIGH-TEMPERATURE OXIDATION AND CORROSION 2005 | 2006年 / 522-523卷
关键词：
high-temperature oxide hardness; Fe-Si alloy; oxide hardness; oxidation; Fe oxides; Fe(2)SiO(4);
D O I：
10.4028/www.scientific.net/MSF.522-523.469
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hardness of oxide scales on Fe-(0, 0.5, 1.5, 3.0)Si alloys was studied at room temperature after oxidation at 1273 K for 18 ks in oxygen, and at 1073 and 1273 K for 180 and 1080 ks in dry air, by micro-Vickers hardness measurements. After oxidation at 1273 K for 18 ks, high-temperature hardness of oxide scales on Fe-(0, 1.5, 3.0)Si alloys was also measured at 1273 K Oxide scales on Fe-Si alloys were mainly Fe(2)O(3), Fe(3)O(4), FeO and Fe(2)SiO(4). Hardness of Fe(2)O(3), Fe(3)O(4) and FeO on Fe was 6.7, 4.0 and 3.5 (GPa), respectively, and hardness of Fe(2)O(3) on Fe-Si alloys slightly increased with increasing silicon content at room temperature. At 1273 K, hardness of Fe(3)O(4) and FeO on Fe was 0.08 and 0.05 (GPa), respectively, and hardness of Fe(2)O(3) on Fe-1.5Si alloy was 0.32 (GPa), and that of Fe(2)O(3) and Fe(2)SiO(4) on Fe-3.0Si alloy was 0.53 and 0.63 (GPa), respectively.
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页码：469 / 476
页数：8
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