MoSi2基焼結複合材料の高温での機械的性質

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タイトル別名
  • Mechanical Properties of MoSi2 Matrix Sintered Composites at Elevated Temperature.
  • MoSi2キ ショウケツ フクゴウ ザイリョウ ノ コウオン デ ノ キカイテ

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抄録

SiC whisker reinforced MoSi2 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 MoSi2 matrix material. In the case of the MoSi2-20vol% SiC whisker composites, the flexural strength was 1010 MPa (2.8 times MoSi2 matrix) at room temperature and 1420 MPa (3.7 times MoSi2 matrix) at 1000°C; the steady state creep strain rate under a stress of 100 MPa at 1300°C was 2.2×10-7/Sec (1/26 of MoSi2 matrix). The material and microstructural characteristics contributing to these improvement mechanisms are discussed in this paper.

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