Ceram Soc,73174-48190 journa Thermal Conductivity of Vapor-Liquid-Solid and Vapor-Solid Silicon Carbide Whisker-Reinforced Lithium Aluminosilicate Glass-Ceramic Composites D.. H. Hasselman' and Kimberly Y. Donaldson Thermophysical Research Laboratory, Department of Materials Science and Engineering. J. R. Thomas, Jr. Ceramic Science and Technology p, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 John J. Brennan d Technologies Research Center, East Hartford, Connecticut 06108 ty and diffu- cting ness for the tw e wo composites. JHISKER- or fiber-reinforced ceramic, glass-cer glass matrix composites offer advantages over single phase ceramics for load-bearing requirements at elevated temperatures.- Such composites will also need to be able to withstand high levels of heat flux /or rapid temperati changes. Since these conditions can lead to failure by thern D.K.Shetty- Manuscript No. 193285. Received August 22, 1994:; approved March 30, 1995 5 the composite Specimen preparation was conducted as part of Contract No. F49620-88-C-006 e 2.67 g/cm', which supported by the Air Force Office of Scientific Re conductyity Member, On sabbatical leave from the Dep nt of Mechanical Engineering, Virgi Advanced Polytechnic Institute and State U ity, Blacksburg. Virginia. Los Alamos National Laboratory. Los Alamos, NM. 742