Title: Preparation method of carbon/carbon composite material and phosphate anti oxidation coating for same
Application Number: 200610089617 Application Date: 2006.07.06
Publication Number: 1948555 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C23D5/02;C23D7/00;C23D11/00;C09D1/00;C09D5/08
Applicant(s) Name: Beijing Aerospace Univ. Address:
Inventor(s) Name: Luo Ruiying;Li Jun;Lin Chen;Jiang Na
Attorney & Agent: wangshun rong luyu min
Abstract:
    A neotype phosphate inoxidzable coating of carbon(C) or its complex materials, the preparation process was as follows: (1) The preparation of C and its complex materials: Taking their precast objects as long stapled needling blanket, C and its complex materials were prepared with chemical vapour deposition process. (2) Interface design and component matchiong of coat: Phosphate including manganese phosphate, tribasic zinc phosphate and chromium phosphate etc. was selected as main phas. Aluminium oxide and zinc oxide or aluminium chloride and zinc chloride was taken as agglomerant. Distilled water solution of phosphoric acid with a mass percent of 50% was used as solvent. (3) The preparation process of coat: (1)Craft of slurry brushing: Firstly, distilled water solution of phosphoric acid was prepared. Then, each component was added ordinally into solution from little amount to excessive amount. After mixing equably, slurry was coated equably onto the surface of materials. (2)Craft of high temperature sintering: Coated materials were heated up to 300deg.C in 1 to 2 hours, and temperature should be kept for 2 to 4 hour. Then, materials were heated slowly up to 700-900deg.C in 2 to 3 hours and were sintered in high temperature for 2 to 4 hours.
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