连续纤维增强陶瓷基复合材料微观力学研究进展  

Research Progress on Micro-mechanical Property of Continuous Fiber-reinforced Ceramic Matrix Composites

作　　者：刘海韬[1] 杨玲伟 韩爽[1] LIU Hai-Tao;YANG Ling-Wei;HAN Shuang(Science and Technology on Advanced Ceramic Fibers and Composites Laboratory,National University of Defense Technology,Changsha 410073,China;IMDEA Materials Institute,Madrid 28906,Spain)

机构地区：[1]国防科技大学新型陶瓷纤维及其复合材料重点实验室,长沙410073 [2]西班牙IMDEA材料研究所,马德里28906

出　　处：《无机材料学报》2018年第7期711-720,共10页Journal of Inorganic Materials

基　　金：国家自然科学基金(51202291)

摘　　要：微观力学参数是构建连续纤维增强陶瓷基复合材料(CFRCMCs)组分、微观结构和宏观力学性能的桥梁,但受限于CFRCMCs的脆性和微观力学参数测试水平,微观力学研究工作进展缓慢。随着基于纳米压痕的微观力学测试技术和基于聚焦离子束微观测试样品制备技术的飞速发展,近年来CFRCMCs的微观力学研究工作取得显著进步。本文结合国防科技大学刘海韬课题组的研究工作,重点对CFRCMCs组分的原位模量、断裂韧性以及界面结合强度的测试方法和典型应用进行了讨论,最后举例说明了基于微观力学参数的CFRCMCs宏观力学行为的预判方法。Localized mechanical properties of composite components（fiber, matrix, and interface） are critical parameters bridging the composition, microstructure and macro-mechanical performance of continuous fiber-reinforced ceramic matrix composites（CFRCMCs）. However, they are difficult to be acquired and decoupled from bulk composites based on the traditional macro-mechanical testing techniques, due to their limited testing volumes and complex heterogeneous composite structures. The above questions has been solved recently by novel nano/micro mechanical testing and focused ion beam milling（FIB） techniques, which provide powerful tools to quantify the micro-mechanical properties of CFRCMCs. In this paper, recent progress in micro-mechanical properties of CFRCMCs was firstly reviewed, with special emphasis on the in-situ modulus and toughness of ceramic fibers and matrix, and the shear property of fiber/matrix interface. Following that, a criterion based on the He-Hutchinson cracking model was proposed to predict the macro mechanical performance of CFRCMCs by using those micro-mechanical parameters.

关 键 词：陶瓷基复合材料 微观力学 纳米压痕 聚焦离子束 综述 

分 类 号：TB323[一般工业技术—材料科学与工程]