1989 Volume 75 Issue 9 Pages 1596-1603
The composite materials consisting of alumina ceramic particles and heat-resistant alloys were manufactured, and both the heat conductivity and compressive creep of composites in the high temperature range were investigated for the purpose of developing a new type of heat resistant material. The compsites containing alumina ceramic particles of 2 or 3 mm diameter in about 50 percent volume fraction were produced by lost wax process. It was made clear that the heat conductivity of the composite was decreased to a half of that of matrix metal in the temperature above 600 K, and the creep strain of the composite at 1 523 K could be decreased to a tens of that of matrix. It was also discussed about the effect of the purity of alumina particles and the component system of matrix metal on the creep strain of the composite.
