Composite carbon-carbon crucible containing anti-oxidation coating and preparation method of composite carbon-carbon crucible

The invention discloses a composite carbon-carbon crucible containing an antioxidant coating and a preparation method of the composite carbon-carbon crucible, and relates to the technical field of carbon fiber material forming processes. The carbon/carbon composite material crucible comprises a high-density carbon fiber preform which is obtained by laying non-woven cloth layers and net tire layers according to a layer-by-layer alternate laying method and laying graphite powder layer by layer through composite needling; the carbonized matrix is formed by carbonizing resin liquid, and the resin liquid is distributed on the surface of the high-density carbon fiber preform and in the structure of the high-density carbon fiber preform; the resin liquid at least comprises resin and N-hydroxyethyl ethylenediamine-N, N ', N'-triacetic acid. The density of the prepared carbon-carbon thermal field crucible is effectively improved, and the mechanical property is remarkably enhanced; and meanwhile, after the surface is c