Microstructure and Mechanical Property of MoSi2 Based Composites

Sang Ll Lee; Jin Kyung Lee; Byeong Hyeon Min; Yun Seok Shin; Dong Su Bae; Jun Young Park; Gen Sasaki

doi:10.4028/www.scientific.net/MSF.475-479.707

Paper Titles

The Control of Microstructures in (Mo_1-x, Nb_x) Si₂ Intermetallics
p.689

Elastic and Thermal Expansion Anisotropy of Mo-Based 5-3 Silicides
p.695

An Assessment of Ir-Nb-X (X=Hf,Ta,Ti) Ternary Alloys for Ultra-High Temperature Applications
p.699

Solid Solution Hardening Effect of Ir
p.703

Microstructure and Mechanical Property of MoSi₂ Based Composites
p.707

Powder Injection Molding of Niobium
p.711

High Temperature Oxidation in Multicomponent Nb Alloys
p.717

Oxidation Behavior of Rh-xTi Refractory Alloys
p.721

Bonding Character in the Laves-Phases TiCr₂ and TiCo₂
p.725

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Microstructure and Mechanical Property of MoSi₂ Based Composites

Abstract:

This study dealt with both the strengthening of matrix and the suppression of interfacial reaction for the development of high toughness Nb/MoSi2 laminate composites. The impact values of Nb/MoSi2, Nb/MoSi2-SiC, Nb/MoSi2-ZrO2 laminate composites were investigated at the room temperature. The flexural strength of MoSi2 based composites containing SiC or ZrO2 particles were also evaluated at elevated temperatures. The reduction of reaction layer by the addition of ZrO2 particles led to the sufficient improvement in the impact value of Nb/MoSi2 laminate composites. The flexural strength of MoSi2-SiC and MoSi2-ZrO2 materials decreased at temperatures higher than 800 °C.