Toyo Tanso Co., Ltd.

Norimasa Yamada

Yoshihisa Abe

Hirokazu Fujiwara

This invention provides a tantalum carbide-coated carbon material, which has excellent corrosion resistance to reducing gases and thermal shock resistance at high temperatures, and a process for producing the same. The tantalum carbide-coated carbon material comprises a carbon substrate and a coating film provided on the carbon substrate directly or through an intermediate layer. The coating film is formed of a large number of densely aggregated fine crystals of tantalum carbide. The diffraction line of the (220) plane of tantalum carbide shows the maximum diffraction intensity in an X-ray diffraction pattern of the coating film. More preferably, this diffraction intensity is not less than four times the intensity of a diffraction line showing the second highest diffraction intensity.

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Kanonji, Japan

Norimasa Yamada