Study on three dimensional Photofabrication for Functional Ceramic Parts

点击翻译按钮获取中文摘要

Although new ceramic materials are used for high functional parts as mechanical and electric divices, its application areas have not been fully established from the economical point of view of high forming costs and finishing ones.Comparing with the current machining of high rigid machining center with a diamond tool, this research focuses on the layred manufacturing for three dimensional parts which the ceramic particles are bound selectively and the photopolymer is used as a binder.The results are summerized as follows ;1.Observation of formability oflayred manufacturingThe phenomenon is observed that photopolymer coated ceramic particles are bonded by UV laser spot. It is also observed that the solidified depth depends on the ceramics particle diameter and the laser spot diameter. The selection of low viscosity resin is necessary. Thus the problems are clarified to the formability of the layred manufacturing system with ceramic particle.2.The evaluation to the formability of functional ceramic partsA cavity die made from cured photo resin is used to produce ceramic parts which the ceramic powder is poured into the cavity to form ceramic parts. Alumina sol is used as a binder. The formability is compared with parts made by plaster mold. Improvement of porosity is necessary. Selection of heat temperature and dry system is important.3.The evaluation for the degree of sinteringThe ceramic parts produced by the cured photoresin cavity is tested. After building, green parts are sintered. The 2.21 of specific gravity is obtained. The process principle of the three dimensional photo-fabrication for functional ceramic parts is verified.