A Novel Microstructure and Its Effects on Mechanical Properties of TiC/TiB2/MoSi_2 Composites

Journal of Inorganic Materials

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A Novel Microstructure and Its Effects on Mechanical Properties of TiC/TiB₂/MoSi_2 Composites

LI Jian-Lin; JIANG Dong-Liang; TAN Shou-Hong

State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai institute ofCeramics; Chinese Academy of Sciences; Shanghai 200050; China

Received:1999-02-03 Revised:1999-03-15 Published:2000-02-20 Online:2000-02-20

Abstract

Abstract: A novel microstructure of TiC /TiB₂ / MoSi₂ composite and its effect on mechanicalproperties were studied. The results indicate that hollow particles, consisting of TiC and TiB₂nanosized grains, can be formed in MoSi₂ matrix when the mixed powder of elemental Ti, B₄C and MoSi₂ 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.

Key words: microstructure, mechanical properties, molybdenum disiliside

CLC Number:

TB323

LI Jian-Lin,JIANG Dong-Liang,TAN Shou-Hong. A Novel Microstructure and Its Effects on Mechanical Properties of TiC/TiB₂/MoSi_2 Composites[J]. Journal of Inorganic Materials.

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A Novel Microstructure and Its Effects on Mechanical Properties of TiC/TiB₂/MoSi_2 Composites

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