Reaction Kinetics between Fiber and Matrix Components in Metal Matrix Composites

Interdiffusion and interdiffusion COntrGlied intermediate phase formation in metal matrix composites can be of interest for the prolonged application of these systems at high temperatures. Methods are discussed that address the kinetics of interdiffusion in systems that exhibit solid solution intermixing or the formation of a third intermediate phase at the fiber/matrix interface, or both. The tungsten fiber reinforced niobium and tungsten fiber reinforced superalloy systems are employed as model systems for experimentation and discussion. In an effort to impede interdiffusion, the concept of ion implanted diffusion barriers have been examined. Preliminary results on the feasibility and effectiveness of ion implanted diffusion barriers are presented. Superalloys 1988 Edited by S: Reich&n, D.N. Duhl, G. Maurer, S. Antolovich and C. Lund The Mehllurgical Society, 1988