Method for enhancing the mechanical strength of an SiC/SiC ceramic matrix composite material
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United States of America Patent
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Apr 26, 2016
Grant Date -
Nov 27, 2014
app pub date -
Dec 21, 2012
filing date -
Dec 22, 2011
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Abstract
The invention relates to a method for improving the mechanical strength of a ceramic matrix composite material of the SiC/SiC type, this composite material being obtained by (a) forming a fiber preform from 3rd generation silicon carbide fibers and (b) forming a ceramic matrix around the fiber preform, this ceramic matrix comprising silicon carbide. The method comprises a chemical etching treatment of the surface of the fibers by bringing said fibers into contact with a solution comprising an oxidizer, this treatment being carried out before step (a) or between steps (a) and (b).
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