硅酸盐通报2011，Vol.30Issue(1)：147-152,6.
SiC/SiAlON对原位SiC结合刚玉材料抗侵蚀性的影响
Effects of SiC/SiAION Addition on Slag Resistance of In-situ SiC Bonded Corundum Materials
摘要
Abstract
In-situ SiC bonded corundum composite materials have been prepared, using bauxite-based corundum, fused corundum fines, silicon and SiC/SiAlON powder as starting materials and resin as binder after firing the specimens at 1450 ℃ under carbon embedded condition. The effects of SiC/SiAlON addition on slag resistance of this composite by static crucible method have been studied. The results show the insitu SiC bonded corundum materials possess good corrosion resistance and the corrosion resistance is further improved with appropriate SiC/SiAlON powder addition. The behavior and mechanism of in-situ SiC bonded corundum materials against slag resistance are slag corrosion behavior of these composite materials is that SiC and SiAlON are first oxidized and the oxidized product SiO2 and Al203 will react with CaO and SiO2 from the slag and Al2O3 in the matrix of the specimens to form anorthite (CaO · Al203 · 2SiO2 ) and this material is corroded. The good corrosion resistance of this composite due to the in-situ formed SiC with poor wettability to blast furnace slag and SiC whiskers or particles fill in the pores to retard the slag infiltration into the inner. The nonoxides increase with SiC/SiAlON addition resulting in corrosion resistance being improved noticeably.关键词
原位SiC/SiAlON/抗侵蚀性/刚玉Key words
in-situ SiC/ SiAlON/ corrosion resistance/ corundum分类
化学化工引用本文复制引用
刘新红,谷晓雷,钟香崇..SiC/SiAlON对原位SiC结合刚玉材料抗侵蚀性的影响[J].硅酸盐通报,2011,30(1):147-152,6.基金项目
河南省教育厅自然科学基金资助(2008A430017,2011A430024) （2008A430017,2011A430024）
