以甲基乙烯基二氯硅烷、乙烯基三氯硅烷、氨基甲酸铵和环己烷作为原料,通过溶剂热合成路线制备出SiCNO陶瓷的液态先驱体.先驱体经1100℃热解后,转变为非晶态SiCNO材料.FT-IR红外分析显示先驱体中含有异氰酸酯官能团.非晶态SiCNO具有良好的高温热稳定性,在1500℃时仍保持无定形状态,1600℃以上时基体中析出Si2N2O和少量的β-SiC相.
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