THERMAL SHOCK RESISTANCE AND HIGH-TEMPERATURE STRENGTH OF A MOLYBDENUM DISILICIDE - ALUMINUM OXIDE CERAMIC

摘要

A ceramic consisting nominally of 75 percent molybdenum disilicide and 25 percent aluminum oxide was investigated to determine its thermal shock characteristics and high-temperature strength properties.nIn a rim-quench thermal shock evaluation, the material was found to "be superior to pure molybdenum disilicide. In a simulated altitude blow-out test, the material withstood an average of 2,1/2 cycles when quenched from 1800° F. The modulus-of-rupture strengths varied from 25,100 pounds per square inch at 1800° F to 12,000 pounds per square inch at 2200° F.