| 摘要 |
PURPOSE:To facilitate the operation in forming and to improve the productivity of the sintered material by adding >=1 kind of polysaccharide to a dispersion of inorg. powder in solvent to obtain an inorg. powder suspension or further sintering the formed material obtained from the suspension. CONSTITUTION:One or more kinds of polysaccharides selected from pectin, pectic acid, 1,3-glucan originated from microbes and animal polysaccharides are added to an aq. dispersion of inorg. powder (e.g. ceramic powder) or the dispersion in water and alcohol. In this case, the reaction is carried out at pH7.0-12.0, the reaction temp. is ordinarily controlled to room temp., and the reaction time is adjusted to about 24hr. The inorg. powder is deflocculated and dispersed in a solvent by the treatment to obtain the inorg. powder suspension having the above mentioned characteristics. The suspension is formed by casting, press forming, etc., and the formed material is sintered to obtain an inorg. powder sintered material, namely a ceramic sintered material. |
