Carbon Coating of Ceramic Tiles by Using Poly(Ethylene Terephthalate)

概要

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Carbon coating of ceramic tiles was successfully carried out by placing the sample tile on the powder of carbon precursor, poly(ethylene terephthalate) (PET). Even the upper surface of the tile, which did not touch with carbon precursor directly, was homogeneously coated by carbon when about 0.01 g of PET per 1 cm2 of the tile was used. In order to coat the upper surface of the tile, heating above 700°C was required in inert atmosphere. After carbon coating the color of the surface was characterized by using L*, a* and b* (CIELAB). The lightness L* of the carbon-coated surface of the tiles was comparable with that of the commercially available roofing tiles for Japanese houses. The addition of Fe2O3 in the precursor PET resulted in the formation of soot-like particles on the lower surface, giving a little lower L* value.
公益社団法人日本セラミックス協会の論文