CAJ | 학술논문

使用有机锆先驱体，通过先驱体高温裂解工艺制备C/C-ZrC复合材料。采用热重分析仪、傅里叶转换红外光谱、X射线衍射、扫描电子显微镜等手段研究该有机锆先驱体高温裂解过程中的热失重行为、官能团的转变情况、物相转化过程及显微组织。结果表明：有机锆先驱体从室温加热至1200°C时，首先生成无机态的二氧化锆，当裂解温度升高至1600°C时，二氧化锆通过碳热还原反应生成碳化锆陶瓷。对C/C-ZrC复合材料的显微组织观察表明，所制备的复合材料具有较好的结构特征：该复合材料的外表面形成一层碳化锆陶瓷层，复合材料内部的大部分孔隙由碳化锆陶瓷基填充。
사용유궤고선구체，통과선구체고온렬해공예제비C/C-ZrC복합재료。채용열중분석의、부리협전환홍외광보、X사선연사、소묘전자현미경등수단연구해유궤고선구체고온렬해과정중적열실중행위、관능단적전변정황、물상전화과정급현미조직。결과표명：유궤고선구체종실온가열지1200°C시，수선생성무궤태적이양화고，당렬해온도승고지1600°C시，이양화고통과탄열환원반응생성탄화고도자。대C/C-ZrC복합재료적현미조직관찰표명，소제비적복합재료구유교호적결구특정：해복합재료적외표면형성일층탄화고도자층，복합재료내부적대부분공극유탄화고도자기전충。
C/C-ZrC composites were prepared by precursor infiltration and pyrolysis using the organic zirconium as precursor. The conversion mechanisms of the precursors such as the thermal behavior, structural evolution, phase composition, microstructure, composition of the precursors and products were analyzed by thermal gravimetric analyzer, Fourier transform infrared spectrometer, X-ray diffraction and scanning electron microscope. The results indicate that the ZrC precursor transforms to inorganic ZrO2 from room temperature to 1200 °C, then reduces to ZrC at 1600 °C through the carbothermal reduction reaction. The microstructure of the C/C-ZrC composites was also investigated. The composites exhibit an interesting structure, a coating composed of ZrC ceramic covers the exterior of the composite, and the ZrC ceramic is embedded in the pores of the matrix inside the composite.