摘要
本文研究了原位生成的TiC/TiB2/MoSi2三相复合材料的一种新的显微结构及其对力学性能的影响,结果表明,当热压金属Ti,B4C和MoSi2的混合粉末时,在MoSi2的基体内生成由TiC和TiB2组成的空心粒子.其中的TiC和TiB2粒子均为纳米粒子.具有此新显微结构的复合材料,强度达到480MPa,断裂韧性为5.2MPa·m1/2,较单相MoSi2材料的力学性能有大幅度提高.
A novel microstructure of TiC /TiB_2 / MoSi_2 composite and its effect on mechanicalproperties were studied. The results indicate that hollow particles, consisting of TiC and TiB_2nanosized grains, can be formed in MoSi_2 matrix when the mixed powder of elemental Ti, B4_Cand MoSi_2 was reactively hot pressed. The bending strength of these composites with the newmicrostructure reaches at 480 MPa, and the highest fracture toughness is 5.2 Mpa.m^l/2.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第1期73-78,共6页
Journal of Inorganic Materials
关键词
显微结构
力学性能
二硅化钼
复合材料
microstructure
mechanical properties
molybdenum disiliside