研究了O＇-Sialon-BN复合材料在钢液中侵蚀的热力学和动力学过程,结果表明,O＇-Sialon-BN侵蚀的主要原因是钢液中的[Mn]与试样晶粒间少量玻璃相中的SiO2发生化学反应生成MnO-SiO2-A12O3低熔点渣相并溶解;同时.钢液中的[O]与试样中的O＇-Sialon反应生成SiO2和A12O3,产物SiO2又被钢液侵蚀掉;但BN不易与钢液反应因此,BN晶粒在侵蚀层内壁聚集,逐渐形成较厚的扩散层,阻碍了试样在钢液中侵蚀反应的进行O＇-Sialon BN复合材料抗钢液侵蚀的动力学分为两段控制:前期由界面化学反应控制,后期由扩散控制,由此分别得出相应的侵蚀速度方程。
参考文献
| [1] | P.Z.Gu, W.H.Lee, Sintering, Properties and Application of Sialon ZrO2 and Sialon-ZrO2-BN Fiber Composites, in High Tech. Ceramics, edited by P.Vincenzini (Amsterdam, Netherlands, Elsevier Science Publishers B.V., 1987) p.2725 |
| [2] | 甄强.李文超,水平连铸用分离环的研究现状,耐火材料,32(4),234(1998)(ZHEN Qiang, LI wenchao, Recent Development of the Break Ring for the Horizontal Continuous Casting,Refractroy Materials, a2(4), 234(1998)) |
| [3] | R.Larker, Reaction Sintering and Properties of Silicon Oxynitride Densified by Hot Isostatic Pressing,J.Am.Ceram.Soc., 75(1), 62(1992) |
| [4] | D.B.Hoggard, H.K.Park, O＇-Zircomia and its refractory application, Ceramic Bulletin, 69(7), 1163(1990) |
| [5] | Y.B.Cheng, D.P.Thompson, Densification of Zirconia-containing Sialon Composites by Sm2O3, J.Mat.Sci.,28, 3097(1993) |
| [6] | V.M.Sglavo, R.D.Maschio, G.D.Soraru, Fabrication and Characterization of Polymer-derived Si2N2O-ZrO2Nano-composite Ceramics, J.Mat.Sci., 28, 6437(1993) |
| [7] | 魏寿昆.冶金过程热力学,第一版,(上海,上海科学技术出版社,1980)p.37(WEI Shoukun, Thermodynamics of Metallurgical Process, (Shanghai, Shanghai Scientific and Technology Literature Publishing House, 1980) p.37) |
| [8] | 德国钢铁工程师协会编,王俭,彭育强,毛裕文译,渣图集,(北京,冶金工业出版社,1989)p.169(German Engineer Association of Iron and Steel, Translated by WANG Jian, PENG Yuqiang, MAO Yuwen, Diagrams of Slag (Beijing:Metallurgical Industry Press, 1989) p.169) |
| [9] | W.D.Kingery, H.K.Bowen, D.R.Uhlman, Introduction to Ceramics, 2nd Edited, (USA, John Wiley and Sons Inc., 1967) p.303 |
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