| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for easily obtaining hollow ceramic grains which are hardly cracked in a manufacturing stage, are relatively large in particle sizes, such as a millimeter class and several centimeter class, are well-ordered in particle diameter and particle shape, and hollow ceramic grains manufactured by using the method, and a hollow ceramic grain-using article using the hollow ceramic grains. SOLUTION: The method for manufacturing the hollow ceramic grains includes a process of preparing a granular foamed substrate, a process of coating the surface of the foamed substrate with ceramic powder and producing a ceramic covering with the ceramic powder layer formed on the surface, and a process of firing the ceramic covering. COPYRIGHT: (C)2007,JPO&INPIT |
