초록 ▼

The invention is relates to CVI/CVD furnace apparatus. More specifically, the invention is directed to methods and apparatus for inhibiting infiltration of reactive gas into insulation for a high temperature CVI/CVD furnace. A method and apparatus is provided that inhibits infiltration of reactant g

The invention is relates to CVI/CVD furnace apparatus. More specifically, the invention is directed to methods and apparatus for inhibiting infiltration of reactive gas into insulation for a high temperature CVI/CVD furnace. A method and apparatus is provided that inhibits infiltration of reactant gas into porous insulation over extended periods of time, preferably the life of the furnace.

대표청구항 ▼

1. A method of inhibiting infiltration of a reactive gas into porous refractory thermal insulation during high temperature processing of refractory composites, comprising the step of:sealing porous refractory insulation that may be exposed to a reactive gas during high temperature processing of refr

1. A method of inhibiting infiltration of a reactive gas into porous refractory thermal insulation during high temperature processing of refractory composites, comprising the step of:sealing porous refractory insulation that may be exposed to a reactive gas during high temperature processing of refractory composites with a coating sufficiently impervious to said reactive gas to block penetration of said reactive gas into said porous refractory insulation, said coating comprising a first component that is absorbed into and bonds to said porous refractory insulation, and a second component overlying said first component that forms an impervious barrier to said reactive gas.