耐火材料 ›› 2023, Vol. 57 ›› Issue (1): 20-26.DOI: 10.3969/j.issn.1001-1935.2023.01.005

• 研究开发 • 上一篇    下一篇

熔融沉积法3D打印制备多孔氧化锆陶瓷

牛富荣1), 张力1), 郭金玉1), 刘鹏1), 杨现锋1), 谢志鹏2)   

  1. 1)长沙理工大学 材料科学与工程学院 湖南长沙 410114
    2)清华大学材料学院 精细陶瓷与先进工艺国家重点实验室 北京 100083
  • 收稿日期:2022-03-31 出版日期:2023-02-15 发布日期:2023-02-21
  • 作者简介:牛富荣:男,1998年生,硕士研究生。E-mail:niufurong2ww@163.com
  • 基金资助:
    国家自然科学基金资助项目(52172063);湖南省自然科学基金资助项目(2021JJ30724)。

Preparation of porous zirconia ceramics by fused deposition 3D printing

Niu Furong, Zhang Li, Guo Jinyu, Liu Peng, Yang Xianfeng, Xie Zhipeng   

  1. School of Materials Science and Engineering,Changsha University of Science & Technology,Changsha 410014,Hunan,China
  • Received:2022-03-31 Online:2023-02-15 Published:2023-02-21

摘要: 以氧化锆粉为主要原料,采用基于螺杆挤出的熔融沉积法在4种打印路径(单线、网格、单线+矩形、网格+矩形)下3D打印制备了孔隙率均分别为15%、25%、35%、45%的多孔氧化锆陶瓷。对多孔陶瓷的孔壁、打印层间结合、孔结构等进行了显微结构分析,并检测压缩强度。结果表明:1)采用熔融沉积法可以3D打印制备孔壁结构致密、孔形状保持良好的多孔陶瓷;2)低孔隙率时,多孔氧化锆陶瓷的应力-应变曲线呈弹性阶段,无坍塌阶段,随着孔隙率升高,出现明显的坍塌阶段;3)在相同孔隙率下,混合路径制备的多孔陶瓷的压缩强度比单一路径的更高,当孔隙率为15%时,单线+矩形路径打印的多孔陶瓷的压缩强度最高,达到271 MPa。

关键词: 3D打印, 氧化锆, 多孔陶瓷, 熔融沉积法, 打印路径, 压缩强度

Abstract: Porous zirconia ceramics with the porosity of 15%,25%,35% and 45% were prepared by 3D printing in four printing paths (single line,grid,single line+rectangle,and grid+rectangle) using zirconia as the main raw material and the fused deposition modeling method based on screw extrusion.The microstructure of the pore wall,the interlayer bonding and the pore structure of the porous ceramics was observed,and their crushing strength was measured.The results show that:(1)porous ceramics with dense pore wall structure and good pore shape can be prepared by fused deposition 3D printing;(2)when the porosity is low,the stress-strain curve of the porous zirconia ceramics shows an elastic stage without a collapse stage;with the increase of the porosity,an obvious collapse stage appears;(3)with the same porosity,the crushing strengths of the porous ceramics prepared in the mixed paths are higher than those of in the single paths;when the porosity is 15%,the crushing strength of the porous ceramics printed in the single line+rectangle path is the highest,reaching 271 MPa.

Key words: 3D printing, zirconia, porous ceramics, fused deposition modeling method, printing path, crushing strength

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