| 摘要 |
PROBLEM TO BE SOLVED: To form a tough and hard ceramic film which does not peel on a carbon surface by thermally spraying ceramics to the carbon surface, then penetrating a binder into the thermally sprayed layer and the carbon surface to cure the thermally sprayed layer. SOLUTION: A porous carbon plate 2 of which the surface is roughened by sandblasting is arranged on the inner side of an earthen pot 1. The peripheral part of the carbon plate 2 in contact with this earthen pot 1 is adhered by a heat resistant adhesive 5 to the earthen pot 1 to provide sealing in a manner as to prevent water leakage. The powder of the ceramics is then thermally sprayed to the surface of the carbon plate 2 to form the thermally spray layer 3 of the ceramic particles. The binder 4 is thereafter applied on the thermally sprayed layer 3 from above and is penetrated into the surface of the carbon plate 2. The carbon plate is then heated to allow the binder 4 to cure. As a result, the penetration of the water into the surface of the carbon plate 2 is prevented. Further, the surface of the carbon plate 3 is coated with the hard ceramic film and, therefore, there is no wear and the carbon plate withstands long-term use when the carbon plate is used for the tableware. |
