Mechanical properties of oxidation-resistant SiC/C compositionally graded graphite materials

摘要

Mechanical properties of oxidation-resistant SiC/C compo- sitionally graded graphite materials composed of a CVD SiC coating layer, a SiC/C graded layer, and a graphite Substrate were studied by bending, compressive, and hard- Ness tests at room temperature. CVD SiC coated graphite And graphite with a SiC/C graded layer alone were also Examined. The bending strengths of oxidation-resistant SiC/C SiC compositionally graded graphite materials as well as CVD SiC coated graphite were about twice as much as that Of graphite.