Mullite-zirconia ceramics produced by powder metallurgy methods or directional solidification are well-known materials that combine the high creep resistance of mullite and the enhanced fracture toughness of a composite microstructure. These features provide a potential for the use of the material as a fibrous reinforcement for metal and ceramic matrices to obtain high-temperature fibrous composites. In this study, the microstructure and room- and high-temperature strength of mullite-ZrO₂ fibres produced by the internal crystallisation method (ICM) were evaluated. The ICM provides a high productivity rate of fabrication technologies and, therefore, a potential to produce fibres suitable for structural applications. The room- and high-temperature strengths of the ICM fibres were comparable to those of the corresponding ceramics obtained by melt crystallization.

通过粉末冶金法或定向凝固法生产的莫来石-氧化锆陶瓷是公知的材料，其结合了莫来石的高抗蠕变性和增强的复合组织的断裂韧性。这些特征为将该材料用作金属和陶瓷基体的纤维增强材料以获得高温纤维复合材料提供了潜力。在这项研究中，莫来石-ZrO ₂的微观结构以及室温和高温强度评价通过内部结晶法（ICM）生产的纤维。ICM提供了高生产率的制造技术，因此具有生产适用于结构应用的纤维的潜力。ICM纤维的室温和高温强度与通过熔融结晶获得的相应陶瓷的室温和高温强度相当。