无机材料学报2026，Vol.41Issue(7)：899-914,16.DOI:10.15541/jim20250440
氧化铝基定向凝固共晶陶瓷的组织特性、调控方法及环境稳定性
Alumina-based Directionally Solidified Eutectic Ceramics:Microstructure,Control Strategies and Environmental Stability
摘要
Abstract
With the rapid advancement of aviation industry,high-temperature structural materials used in aero-engines are encountering increasingly severe service environments and performance challenges.To meet exacting requirements of future technologies,turbine inlet temperature of advanced aero-engines with a thrust-to-weight ratio exceeding 10 is projected to surpass 1500℃.Al2O3-based directionally solidified eutectic ceramics are regarded as ideal and key candidate materials for next-generation extreme working conditions,particularly for long-term use in high-temperature oxidative environments,owing to their melting points exceeding 1700℃,outstanding high-temperature stability,and inherent oxidation resistance.This paper provides a comprehensive review of microstructural characteristics of Al2O3-based directionally solidified eutectic ceramics,with particular emphasis on their morphological features,crystallographic relationships and interfacial structures.Subsequently,discussion focuses on strategies for microstructure control,including optimization of processing parameters,optimal selection of eutectic components,and implementation of innovative approaches such as high-entropy design.Furthermore,a comprehensive analysis is conducted to evaluate stability of these materials under typical high-temperature service conditions,including thermal exposure,oxidative environments,and chemically corrosive media,with particular emphasis on their chemical stability characteristics.Based on this comprehensive review,key scientific issues and core technical challenges in current research are identified.Future research directions are also proposed to establish a theoretical foundation and provide technical guidance for engineering applications of these materials in advanced aero-engine systems.关键词
氧化铝基共晶陶瓷/定向凝固/组织调控/组织稳定性/环境稳定性/综述Key words
Al2O3-based eutectic ceramic/directional solidification/microstructure control/microstructure stability/environmental stability/review分类
化学化工引用本文复制引用
周翠,李捷,孙鲁超,苏海军,王京阳..氧化铝基定向凝固共晶陶瓷的组织特性、调控方法及环境稳定性[J].无机材料学报,2026,41(7):899-914,16.基金项目
国家自然科学基金(52130204,U21A2063) （52130204,U21A2063）
国家重点研发计划(2024YFB3714503) （2024YFB3714503）
辽宁省"兴辽英才"计划(XLYC2203090) （XLYC2203090）
中国科学院国际合作伙伴计划项目(172GJHZ2022094FN)National Natural Science Foundation of China(52130204,U21A2063) （172GJHZ2022094FN）
National Key R&D Program of China(2024YFB3714503) （2024YFB3714503）
Liaoning Revitalization Talents Program(XLYC2203090) （XLYC2203090）
International Partnership Program of the Chinese Academy of Sciences(172GJHZ2022094FN) （172GJHZ2022094FN）
