Abstract:In this work, the relationship between solid content and viscosity for light curing slurry was studied. The preparation and printing of high solid content slurry (45 vol%) were realized by regulating rheological priperties of the dispersant. It is found that the processes of degreasing and sintering are key factors and cracks, which directly affect the quality of ceramics. Thus, the degreasing curve was adjusted according to the type of organic matter in the prepared alumina ceramic slurry. In addition, the two-step degreasing methods of pyrolysis in vacuum and carbon removal in air can fully remove the organic mater, which is not easy to peroduce pores. Finally, the alumina ceramic material with the dense structure was obtained. In all, the effects of dispersant type, concentration and alumina solid content on slurry viscosity were systematically analyzed and the degreasing process was optimized. We hope our work can provied an experimental basis for the light curing molding and the perormance optimization of complex structural ceramic materials.
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