关键词: 氧化铝, 高温共烧陶瓷, 多维度协同机理, 微观结构, 性能调控

Abstract: High temperature co-fired ceramics (HTCC) technology, a cornerstone of modern microelectronic packaging and high-power electronic systems, has long been a focal point in materials science research driven by the imperative of performance optimization. Conventional studies on alumina-based HTCC have predominantly treated alumina as a homogeneous α-phase material, centering their investigations on parameters such as purity and particle size distribution while relatively overlooking the profound impact of alumina polymorphism on the final ceramic properties. The crystal structure, physical morphology, and chemical composition of alumina form an interconnected, systematically tunable multi-dimensional parameter system. These three dimensions interact synergistically, fundamentally governing the preparation process and ultimate performance of HTCC. This paper systematically elaborates on the characteristics of each dimension and their respective influences on HTCC processing. Through in-depth analyses of sintering kinetics, phase transformation pathways, and microstructure evolution, it further dissects the coupling mechanisms by which different alumina polymorphs regulate the dielectric properties, thermomechanical performance, and co-firing compatibility of HTCC. The study argues that transitioning from ´single-parameter optimization´ to ´multi-dimensional collaborative design´ represents the inevitable pathway to overcoming the current performance bottlenecks of alumina HTCC and satisfying the stringent requirements of next-generation high-reliability electronic packaging. Finally, the challenges and future development directions in this field are prospected.

Key words: alumina, high temperature co-fired ceramics, multi-dimensional synergistic mechanism, microstructure, performance regulation