ABSTRACT

Most of the recent work on ceramic melt infiltration has been conducted by W. B. Hillig and coworkers at the GE Research and Development Center. An example [2] involved the use of SCS-6 fibers and a strontium aluminosilicate (SrA12Si20 1) melt in which silicon carbide particles and whiskers were dispersed. Good infiltration was obtained. Nonbrittle fracture was observed (Figure I) during flexural testing at both room temperature and at I450°C. However, it was found that fiber strength was degraded during processing and that batch-to-batch variation was large.