A320 series aircraft carbon/carbon brake materials were prepared by processing a needle-punched carbon fiber preform with quasi-three-dimensional integrity.The preform was first impregnated with a resin and heated to 800℃ to convert the resin to carbon.This was followed by chemical vapor infiltration(CVD)using propylene as the source gas and a radial thermal gradient(external heating,internal cooling or internal heating,external cooling).For the CVD process the performs were separated by graphite pads to al...
【更新日期】
2010-11-30
【分类号】
V257
【正文快照】
1IntroductionCarbon fiber reinforced carbon matrix composites(C/C composites)have received considerable atten-tion because of low density and superior frictionalproperties.As an aircraft brake disc,C/C compositeshave been used in the past forty years.Ther
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