IMPLEMENTS USING CARBON-CONTAINING HEAT-RESISTANT COMPOSITE MATERIALS FOR THERMAL AND/OR THERMOCHEMICAL PROCESSING FACILITIES

摘要

PCT No. PCT/FR96/00373 Sec. 371 Date Oct. 29, 1996 Sec. 102(e) Date Oct. 29, 1996 PCT Filed Mar. 8, 1996 PCT Pub. No. WO96/27570 PCT Pub. Date Sep. 21, 1996An interposition layer (12) is formed on the outside surface of a part (10) made of thermostructural composite material containing carbon, and a metal case is formed by casting molten metal (22) around the part provided with its interposition layer. The interposition layer has closed porosity and it is proof against the metal of the case, such that shrinkage of the metal during cooling is absorbed by compacting or collapsing the porosity of the interposition layer, thereby preserving the integrity of the metal case, and the interposition layer constitutes a diffusion barrier preventing eutetics forming by contact between the metal of the case and the composite material.