| 摘要 |
PROBLEM TO BE SOLVED: To obtain a ceramic tile-like structural base material having sufficiently high finished dimension accuracy, which is obtained by utilizing volcanic ash and to provide a method for producing the same. SOLUTION: The structural base material is composed of a base material 11, an underlaying layer 12 and a thermally sprayed layer 15 of the volcanic ash. As the base material 11, a metal, a ceramic, concrete, a plastic, or the like, is used. The underlaying layer 12 is formed by gas thermal spraying or water plasma thermal spraying using a metal or a ceramic. The thermally sprayed layer 15 of the volcanic ash is formed by water plasma thermal spraying of the volcanic ash or a material containing the volcanic ash as a main component. It is preferable that the surface to be treated of the base material 1 is previously subjected to blasting and further the surface of the thermally sprayed layer 15 of the volcanic ash is subjected to melting treatment. |
