Articles
  • Fabrication of Nb/MoSi2 laminate composites and their thermal shock properties
  • Sang Pill Leea,*, Jin Kyung Leea, In Soo Sona and Dong Su Baeb
  • a Department of Mechanical Engineering, Dong-Eui University, Busan 614-714, Korea b Department of Materials Science & Engineering, Dong-Eui University Busan 614-714, Korea
Abstract
This paper dealt with the characterization of Nb/MoSi2 laminate composites suffered from high temperature thermal shock history. Nb/MoSi2 laminate composites consisted of single MoSi2 matrix layers alternated with four layers of Nb foil. The MoSi2 matrix region of Nb/MoSi2 laminate composites was consolidated by a vacuum hot pressing, using a commercial powder with an average size of 2.8 μm. The flexural strength of Nb/MoSi2 laminate composites has been investigated at the thermal shock temperature difference up to 600 οC. Nb/MoSi2 laminate composites represented a dense morphology in the matrix region, accompanying the creation of two types of reaction layer at the interfacial region. The flexural strength of Nb/MoSi2 laminate composites was greatly affected by the thermal shock test temperature. Nb/MoSi2 laminate composites represented a rapid reduction of flexural strength at the thermal shock temperature difference higher than 300 οC.

Keywords: Nb/MoSi2 laminate composites, microstructure, sintered density, flexural strength, thermal shock temperature.

This Article

  • 2013; 14(2): 206-209

    Published on Apr 30, 2013