State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaStructural Ceramics and Composites Engineering Research Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaUniversity of Chinese Academy of Sciences Beijing 100049 China;
Analysis and Testing Center Donghua University Shanghai 201600 China;
State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 ChinaStructural Ceramics and Composites Engineering Research Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China;
boron nitride nanotubes(BNNTs); interface; nanocomposites; toughness and toughening;