Patent ID: 8568838
Filing Date: 2013-10-29
Classification: C04B,F16D,H05B,Y10T

Abstract:
1. A method for densifying one or more porous articles, comprising: loading the one or more porous articles in a reaction chamber having one or more induction coils and a tuning capacitor; submerging the one or more porous articles and the one or more induction coils in a liquid precursor for a densifying matrix material so that the liquid precursor infiltrates pores in the one or more porous articles; inductively heating the one or more porous articles using the one or more induction coils to a temperature sufficient to cause a vapor layer to form at an interior surface of the pores of the one or more porous articles, and sufficient to cause vapor in the vapor layer to pyrolize and deposit the densifying matrix material within the pores of the one or more porous articles; and controlling a densification kinetic of each of the one or more porous articles, the densification kinetic being weight gain by a porous article per densification time, wherein inductively heating and controlling the densification kinetic of the one or more porous articles comprises matching a resonant frequency of the tuning capacitor with that of the one or more induction coils so as to actively control AC electrical power supplied to drive the one or more induction coils during densification,