直写成型各向异性实心氧化铝材料的结构与力学性能  

Structure and Mechanical Properties of An-Isotropic Solid Alumina Printed by Direct Ink Writing

作　　者：朱凯 杨道媛[3] 郝明选 原会雨[3] ZHU Kai;YANG Daoyuan;HAO Mingxuan;YUAN Huiyu(Henan Numerical Control Technology Engineering Technology Research Center,Zhengzhou 450000,China;Henan Polytechnic,Zhengzhou 450000,China;Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]河南省数控技术工程技术研究中心,郑州450000 [2]河南职业技术学院,郑州450000 [3]郑州大学,郑州450001

出　　处：《硅酸盐学报》2023年第12期3152-3158,共7页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金青年项目(51902290);河南省科技攻关(232102230110)。

摘　　要：直写成型技术有利于成型结构复杂的个性化、定制化产品,而在成型致密实心结构时存在内部结构的孔隙问题和力学性能的各向异性问题。本研究以Al_(2)O_(3)为原料,选用直径为2.0 mm的喷嘴进行打印,当层高设置为0.8 mm时(喷嘴直径的40%),打印样品内部结构较为致密,未观察到孔隙的存在,解决了内部结构孔隙问题;且此时平行于层间与垂直于层间的力学性能较为接近,各向异性指数接近100%,缓解了力学性能各向异性问题。Direct ink writing technology is conducive to molding personalized and customized products with complex structures.However,it is easy to produce pores and an-isotropic problems of mechanical properties when printing a dense solid structure.In this paper,Al_2O_(3) was used as a raw material and a nozzle with a diameter of 2.0 mm was selected for direct ink writing.The results show that the layer height is 0.8 mm,the internal structure of the printed sample is relatively dense,and no pores appear after writing.Also,the mechanical properties parallel to/perpendicular to the inter-layer are similar,and the anisotropy index is close to 100%,thus alleviating the anisotropy problem of mechanical properties.

关 键 词：直写成型 三维打印 氧化铝 

分 类 号：TQ175.6[化学工程—硅酸盐工业]