MoSi_2基焼結複合材料の高温での機械的性質 Mechanical Properties of MoSi_2 Matrix Sintered Composites at Elevated Temperature
SiC whisker reinforced MoSi<SUB>2</SUB> composites were fabricated by hot pressing to more than 98% of theoretical density. Flexural strength and steady state creep strain rate of these composites exhibited substantial improvements over MoSi<SUB>2</SUB> matrix material. In the case of the MoSi<SUB>2</SUB>-20vol% SiC whisker composites, the flexural strength was 1010 MPa (2.8 times MoSi2 matrix) at room temperature and 1420 MPa (3.7 times MoSi<SUB>2</SUB> matrix) at 1000°C; the steady state creep strain rate under a stress of 100 MPa at 1300°C was 2.2×10<SUB>-7</SUB>/Sec (1/26 of MoSi<SUB>2</SUB> matrix). The material and microstructural characteristics contributing to these improvement mechanisms are discussed in this paper.
粉体および粉末冶金 43(4), 444-449, 1996-04-15
Japan Society of Powder and Powder Metallurgy