B(4)C-SiC reaction-sintered coatings on graphite for plasma facing componentsFunded under: EAEC-FUSION 12C
The application of coatings containing boron carbide (B(4)C) to carbon-based materials is of interest for use on plasma-facing components. The objectives of this study were to develop processing parameters for applying boron carbide plus silicon carbide (B(4)C-SiC) coatings by the reaction-sintering method to graphite and carbon fibre-reinforced carbon (CFC) composites and to evaluate the resulting coatings. Coated coupons were evaluated by high heat flux experiments in the JUDITH (electron beam) test facility at KFA. Simulated disruptions, with energy densities up to 10 MJ/m2, and normal operation simulations, with power densitiies up to 12 MW/m2, were conducted. The coatings remained adherent; at the highest levels tested, minor changes occurred, including localised remelting, modification of the crystallographic phases, occasional microcracking, and erosion.
Bibliographic Reference: Article: Journal of Nuclear Materials, Vol. 220-222 (1995) pp. 756-761
Record Number: 199510771 / Last updated on: 1995-07-12
Original language: en
Available languages: en