Creep Testing of MoSi_2 - Bases Composites

摘要

The creep resistance of MoSi_2 composite materials in ambient atmosphere has been studied in the temperature range 1273 - 1673 K under a load of 100 MPa. The material MoSi2 containing 10 vol percent nanometer-sized SiC particles had the optimum microstructure. Creep tests of the investigated composite materials confirmed their relatively good creep resistance. Creep parameters changed with temperature differently in each material. The highest creep resistance, at temperature 1273 K, had the material MoSi_2-10 percent nanometer-sized SiC particles. At the temperature interval 1473 - 1673 K, the materials MoSi_2 - 10 vol. percent SiC particles and MoSi_2 - 10 vol. percent Si_3N_4 particles were the most resistant.