| 摘要 |
PURPOSE:To obtain a high-frequency dielectric porcelain which has a high quality factor and high reliability in a high-temperature and high humidity atmosphere with the oxides of at least two components or more contained and arithmetical mean deviation of profile of the surface being 0.6mum to 4.9mum. CONSTITUTION:BaCO3, TiO2 of chemically high purity is used, which is mixed, for instance, to be a composition of Ba:20.0mol% and Ti:80mol%, and processed by wet mixing, dried and then preliminarily baked, and after that, the preliminarily baked powder is further ground, and after hydrated and dried, a proper amount of caking additive is added thereto and then molded by pressing. The molded body is baked to obtain a sintered body. The surface of the sintered body is ground with abrasive grains of 0.7mum to 5mum to obtain a dielectric porcelain having arithmetic mean deviation of profile of 0.6mum to 4.9mum. |
