Anti-oxidant barrier for carbon based material

Details Anti-oxidant barrier for carbon based material Anti-oxidant barrier for carbon based material

C - Chemistry, Metallurgy

04

B

117/158, 204/195

C04B 41/90 (2006.01) C23C 30/00 (2006.01) C25B 11/12 (2006.01) H05B 7/085 (2006.01) H05B 7/12 (2006.01)

Patent

CA 1273898

ABSTRACT OF THE DISCLOSURE There is described a coating providing an anti-oxidant barrier for carbon based material against oxidation at high temperature (temperature higher than 500° C), more par- ticularly for graphite electrodes used in electric arc furnaces. The coating comprises at least a first layer of metallic titanium or titanium alloy which is applied directly on the carbon-based material, e.g. graphite, and a second layer which comprises a mixture of silicon carbide and aluminum alloy, the second layer being applied on the first layer. This coating substantially extends the life of the carbon-based material. There is also disclosed a method of producing this coating by applying the two layers onto a carbon-based material such as graphite.

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