OXIDE CERAMICS FIBERS FOR THE CHROMIUM BASED COMPOSITE-MATERIALS

The present work covers the study of the yttrium oxide based discrete fiber production procedure, examination of the fiber structure, therma l stability, and simulation of their interaction with chromium matrix under 1500-2000 K temperature conditions. The quick-solidifying yttriu m oxide fiber effective diameter variations are within the range betwe en 40 and 200 mu m with fiber length from five to 10 mm depending on t he PDME procedure conditions. It was found that active interaction bet ween the reinforcing fibers and matrix alloy starts with temperatures greater than 1,700 K. While under lower temperature conditions, the or iginal and annealed fiber phase constitution does not change. The capa bility of the extraction procedure to produce new type reinforcing des crete fibers to be employed in CM development was also demonstrated.