Chemical Vapor Infiltration of TiB2‐Matrix Composites

摘要: The efficiency of the Hall-Heroult electrolytic reduction aluminum can be substantially improved by use a TiB[sub 2] cathode. components, however, has been hampered brittle nature material and grain boundary attack sintering-aid phases molten aluminum. In current work, is toughened through reinforcing fibers, with chemical vapor infiltration used to produce matrix. early efforts it was observed that formation from chloride precursors at fabrication temperatures below 900--1,000 C may have allowed retention destructive levels chlorine. At higher conditions as determined process model, 2]/THORNEL P-25 fiber composites fabricated in 20 h. composite demonstrated stable short-duration (24 h) tests.