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METHOD FOR ENHANCING THE MECHANICAL STRENGTH OF AN SIC/SIC CERAMIC MATRIX COMPOSITE MATERIAL

机译:增强SIC / SIC陶瓷基复合材料机械强度的方法

摘要

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).
机译:本发明涉及一种用于提高SiC / SiC类型的陶瓷基复合材料的机械强度的方法,该复合材料是通过(a)由第三代碳化硅纤维形成纤维预成型体和(b)形成陶瓷而获得的。围绕纤维预制棒的基体,该陶瓷基体包含碳化硅。该方法包括通过使所述纤维与包含氧化剂的溶液接触而对纤维表面进行化学蚀刻处理,该处理在步骤(a)之前或在步骤(a)和(b)之间进行。

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