氧化铝基复合材料出铁沟预制件的研制

研究了防裂剂、减水剂、碳化硅、石墨和钢纤维等加入量与材料性能之间的关系。通过孔隙率，抗弯强度，抗压强度，冷热循环次数，耐渣铁腐蚀等性能，以及组织结构等的测试分析和工业性试验，研制出了性价比优异的氧化铝基复合材料出铁沟预制件，铁水线的最优配方为（％）：Al2O3-14SiC-5G-4SiO2-2微粉－1白泥－6水泥，渣线的最优配方为（％）：Al2O3-16SiC-5G-4SiO2-2微粉－1白粉－6水泥，均外加0．15三聚磷酸钠－3B铝粉－2钢纤维，文中还探讨了氧化铝基复合材料出铁沟预制件的损毁机理。

Alumina-based Composite Materials for Prefabricated Iron Runner

The relationship between the properties of the composite and the addition of the preventing crack additives, dispersion agent, SiC, graphite, stainless steel fiber have been researched. Finally, alumina-based composite materials used for prefabricated iron runner with better ratio of properties and price has been developed by the studying of the properties and microstructure of alumina based composite materials. The best composition for the iron line is Al 2O 3-14%SiC-5%G-4%SiO 2-2%micropoeder-1%white clay-6%cement;the best composition for the slag line is Al 2O 3-16%SiC-5%G-4%SiO 2-2%micropoeder-1%white clay-6%cement;addition of both is 0.15%Na 5P 3O 10-3B aluminum powder-2%stinless steel fiber. The mechanism on the composite materials eroded by molten iron has also been discussed.