会议专题

Study on In-situ Nitriding Synthesis of β-Sialon Bonded Corundum Diphase Material

  In order to improve the thermal shock resistance and mechanical properties of corundum material,introducing silicon powder and aluminum powder in the matrix of corundum material,β-Sialon bonded corundum diphase material was in-situ synthesized during sintering of the material in the nitrogen atmosphere.The influence of different content of β-Sialon and sintering temperature on physical properties,mechanical properties,and thermal shock resistance of the diphase material was investigated.The phase composition and microstructure of the samples were characterized by SEM.The results show that β-Sialon can improve the thermal shock resistance and mechanical properties of diphase material significantly,and that the comprehensive properties of β-Sialon bonded corundum diphase material are excellent providing the level of β-Sialon being 20%and sintering temperature being 1500℃,and that the corundum particles constitute the main phase with skeleton structure and the in-situ formed β-Sialon as matrix phase fills in the interstice of the alumina particles,and that the excellent comprehensive properties of diphase material sintered at higher temperature result from formation of well-developed larger and closely combined β-Sialon phase.

β-Sialon corundum diphase material nitriding

GUO Yuxiang QU Dianli LIU Yan

School of High-temperature Material and Magnesium Resource Engineering, University of Science and Te Vesuvius Refractory Co.Ltd., Anshan Iron and Steel Group Corporation, Anshan, China

国际会议

The 6th International Symposium on Refractories (第六届国际耐火材料会议)

郑州

英文

260-263

2012-10-18(万方平台首次上网日期,不代表论文的发表时间)