Oxidation Rate of Magnesia-Carbon Refractory with Aluminum Additive

摘要:

文章预览

An effect of addition of 2 mass % aluminum powder on the oxidation rate of magnesia-carbon refractory, MgO-C, containing 5 mass % carbon has been investigated by measuring weight change with a thermobalance for the cubic specimens in the temperature range from 1073 to 1823 K in air. The oxidation rate of carbon was measured by analyzing the residual carbon in the specimens at some oxidation time. The variations of the weight with oxidation time at temperatures from 1273 to 1673 K showed the similar tendency. The oxidation rate of carbon in the MgO-C refractory with 2 mass % of aluminum additive was a little smaller than that of the MgO-C refractory with no additives. When the oxidation temperature increased to 1823 K, the weight change became very small. It was suggested that the gaps between MgO grains in the thin oxidation layer were bridged by MgO·Al2O3, which was identified by a X-ray diffraction method.

信息:

期刊:

编辑:

Shigeji Taniguchi, Toshio Maruyama, Masayuki Yoshiba, Nobuo Otsuka and Yuuzou Kawahara

页数:

603-608

引用:

H. Sunayama and M. Kawahara, "Oxidation Rate of Magnesia-Carbon Refractory with Aluminum Additive", Materials Science Forum, Vols. 522-523, pp. 603-608, 2006

上线时间:

August 2006

输出:

价格:

$38.00

[1] H. Toritani, T. Kawakami, H. Takahashi, I. Tsuchiya and H. Ishii: Taikabutsu Vol. 36 (1984), p.629.

[2] H. Kyoden, H. Nishio, K. Ito and S. Horita: Taikabutsu Vol. 38 (1986), p.242.

[3] A. Yamaguchi: Taikabutsu Vol. 38 (1986), p.506.

[4] S. Hanagiri, T. Harada, S. Aso, S. Fujihara, H. Yasui, S. Takanaga, H. Takahashi and A. Watanabe: Taikabutsu Vol. 44 (1992), p.490.

[5] H. Tada, Nomura, H. Nishio and K. Ichikawa: Taikabutsu Vol. 47 (1995), p.60.

[6] H. Sunayama and M. Kawahara: Taikabutsu Vol. 54 (2002), p.458.

[7] H. Sunayama and M. Kawahara: Proc. of the 4 th Int. Sym. on Advances in Refractories for the Metallurgical Industries (2004), p.563.

[8] R.J. Leonard and R.H. Herron: Journal of the American Ceramic Society Vol. 55 (1972), p.1.

[9] H. Ishii, M. Nagafune and I. Tsuchiya: Taikabutsu Overseas Vol. 11 (1991), No. 2, p.9.