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Study on three dimensional Photofabrication for Functional Ceramic Parts

功能陶瓷零件三维光加工研究

基本信息

批准号：
05452131
负责人：
SAITO Katsumasa
金额：
$ 4.54万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

项目摘要

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.

虽然新的陶瓷材料被用于机械和电子器件等高功能部件，但从高成型成本和精加工成本的经济观点来看，其应用领域尚未完全确立。与目前用金刚石刀具加工高刚性加工中心相比，本研究主要针对陶瓷粒子选择性结合，以光聚合物为载体的三维零件分层制造技术进行研究。研究结果如下：1.层状制造的成形性观察通过紫外激光光斑的照射，观察到了光聚合物涂层陶瓷颗粒的粘结现象。研究还发现，凝固深度取决于陶瓷颗粒直径和激光光斑直径。选择低粘度树脂是必要的。2.功能陶瓷零件的成形性评价采用光敏树脂固化的型腔模具制造陶瓷零件，将陶瓷粉末注入型腔，形成陶瓷零件。氧化铝溶胶用作粘合剂。并与石膏模成形件的成形性能进行了比较。孔隙率的改善是必要的。对固化后的光固化树脂型腔制作的陶瓷件进行了烧结试验。构建后，烧结绿色部件。获得了2.21的比重。验证了功能陶瓷零件三维光制造的工艺原理。