Chemical Vapor Deposition of Tantalum on Graphite Cloth for Making Hot Pressed Fiber Reinforced Carbide-Graphite Composite

摘要

Conditions for the CVD of a uniform coating of Ta on fibers of a woven graphite cloth were established. The effect of gas composition, pressure, and temperature were investigated, and the conditions that gave the desired results are presented. Several layers of the coated cloth were hot pressed to produce a TaC--C composite having uniformly dispersed, fine-grained TaC in graphite. Three compositions were hot pressed: 15, 25, and 40 volume percent carbide. 8 figures, 2 tables. (ERA citation 02:057164)