以天然焦宝石熟料、工业铝粉和活性炭粉为原料高温合成碳硅化铝耐火材料.研究1600℃、1700℃和1800℃不同烧结温度对碳硅化铝耐火材料的影响,对材料进行了物相组成、显微结构和烧结性能的测试,进而探讨氧化物合成碳硅化铝耐火材料的烧结机理和动力学过程.结果表明:原料在氩气气氛下经过1400℃保温10h处理,然后在1800℃烧结后得到了物相组成为Al4SiC4,Al4O4C和C的耐火材料.其常温耐压强度为35~36MPa,体积密度为2.6~2.7g·cm-3,显气孔率在18~19%之间.所制备的材料中,Al4SiC4晶粒呈片状和板状,尺寸约为10μm,厚度2μm左右,分布均匀;Al4O4C分布在Al4SiC4品粒的边缘和缝隙中,尺寸约2~3μm.
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