rom Dow Corning) (15:1329). The coated fibers were then "placed into" glass-ceramic matrices, such as barium magnesium aluminosilicates (BMAS); and "strong and tough composites that were oxidatively stable at high temperatures" resulted (15:1329). Temperatures that could be endured by these products were said to range to 1,100(C (15:1328).
Chemical Vapor Infiltration (CVI) Process. Some of the research results from ASI are for BN-coated interface (or interphase) film, deposited by chemical vapor infiltration (CVI) on Nicalon fiber to reinforce Blackglas (1:10). Other studies of composites made in this way have been reported since at least 1990. Eckel and Bradt examined the thermal expansion of a number of Si-C composites, specifically those with FP Alumina (by DuPont; density = 2.47 g/cu. cm.), Nextel 312 (mullite by 3M, density = 1.98 g/cu. cm.), and Nicalon (Si-C-O-N by Nippon Carbon Corp; density = 1.90 gm/cu. cm.) (5). The fiber-matrix composites that stand up well together were found to
...