skip to main content

Title: Microwave assisted chemical vapor infiltration

A microwave assisted process for production of continuous fiber reinforced ceramic matrix composites is described. A simple apparatus combining a chemical vapor infiltration reactor with a conventional 700 W multimode oven is described. Microwave induced inverted thermal gradients are exploited with the ultimate goal of reducing processing times on complex shapes. Thermal gradients in stacks of SiC (Nicalon) cloths have been measured using optical thermometry. Initial results on the ``inside out`` deposition of SiC via decomposition of methyltrichlorosilane in hydrogen are presented. Several key processing issues are identified and discussed. 5 refs.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
10110144
Report Number(s):
LA-UR--91-3850; CONF-911202--11
ON: DE92005019
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: Annual fall meeting of the Materials Research Society (MRS),Boston, MA (United States),2-6 Dec 1991; Other Information: PBD: [1991]
Research Org:
Los Alamos National Lab., NM (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SILICON CARBIDES; CHEMICAL VAPOR DEPOSITION; MATRIX MATERIALS; REINFORCED MATERIALS; FIBERS; CERAMICS; TEMPERATURE GRADIENTS; TEMPERATURE MEASUREMENT; MICROWAVE HEATING; OPTICAL PYROMETERS 360201; PREPARATION AND FABRICATION