熔融沉积法3D打印制备氧化锆陶瓷及其力学性能研究

doi:10.15541/jim20200560

无机材料学报 ›› 2021, Vol. 36 ›› Issue (4): 436-442.DOI: 10.15541/jim20200560 CSTR: 32189.14.10.15541/jim20200560

熔融沉积法3D打印制备氧化锆陶瓷及其力学性能研究

张力¹(), 杨现锋¹(), 徐协文¹, 郭金玉¹, 周哲¹, 刘鹏¹, 谢志鹏²

1.长沙理工大学材料科学与工程学院, 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:2020-09-22 修回日期:2020-10-28 出版日期:2021-04-20 网络出版日期:2020-12-01
通讯作者: 杨现锋, 教授. E-mail: yangxfcsust@csust.edu.cn
作者简介:张力(1994-), 男, 硕士研究生. E-mail: 1297511664@qq.com
基金资助:
国家自然科学基金(51572035)

3D Printed Zirconia Ceramics via Fused Deposit Modeling and Its Mechanical Properties

ZHANG Li¹(), YANG Xianfeng¹(), XU Xiewen¹, GUO Jinyu¹, ZHOU Zhe¹, LIU Peng¹, XIE Zhipeng²

1. School of Materials Science and Engineering, Changsha University of Science & Technology, Changsha 410114,China
2. Department of Materials Science and Engineering, State Key Laboratory of New Ceramic and Fine Processing, Tsinghua university, Beijing 100083, China

Received:2020-09-22 Revised:2020-10-28 Published:2021-04-20 Online:2020-12-01
Contact: YANG Xianfeng, professor. E-mail: yangxfcsust@csust.edu.cn
About author:ZHANG Li(1994-), male, Master candidate. E-mail: 1297511664@qq.com
Supported by:
Natural Science Foundation of China(51572035)

摘要/Abstract

摘要：

在传统熔融沉积方法的基础上, 采用颗粒混合料和螺杆挤出机构3D打印制备了致密和多孔氧化锆陶瓷, 系统研究了颗粒原料的打印性能、坯体显微结构特征和陶瓷材料的力学性能。研究结果表明, 该方法可以实现倾角达165°和跨度为5.5 mm的无支撑结构的打印成型。研究了两种打印路径对致密氧化锆陶瓷抗弯强度及抗弯强度Weibull模数的影响, 结果表明与传统单线填充模式相比, “单线+矩形”复合填充模式可以得到更高致密度和更优力学性能的陶瓷(抗弯强度达到637.8 MPa, Weibull模数达到9.10)。研究了不同气孔率多孔氧化锆陶瓷的压缩力学行为, 结果表明陶瓷的抗压强度和气孔率之间存在复合指数规律, 低气孔率时异面压缩的应力-应变曲线只呈现弹性阶段, 高气孔率时出现弹性阶段和坍塌阶段, 均未出现密实阶段。

关键词: 熔融沉积, 3D打印, 氧化锆陶瓷, 多孔陶瓷

Abstract:

Dense and porous zirconia ceramics were 3D printed with granular feedstock and screw extrusion mechanism on the basis of the traditional fused deposition method. The printability of granular feedstock, microstructure of the body and mechanical properties of ceramic materials were studied. The unsupported structure with maximum inclination 165° and span 5.5 mm were obtained. Effects of the two filling modes of printing on the flexural strength and Weibull modulus of the dense zirconia ceramics were compared. The results showed that the “single line+rectangle” filling mode was more conducive to achieve higher density and better mechanical properties than the traditional single line filling mode. Materials with bending strength of 637.8 MPa and Weibull modulus of 9.1 were obtained. The compressive behavior of porous zirconia ceramics prepared with different porosities were studied, showing an exponential law between compressive strength and porosity. There was only elasticity stage on the stress-strain curve for the samples with high porosity, while collapse stage may appear for the samples with low porosity. There was no collapse stage for both samples.

Key words: fused deposit modeling, 3D printing, zirconia ceramic, porous ceramic

中图分类号:

TQ174

张力, 杨现锋, 徐协文, 郭金玉, 周哲, 刘鹏, 谢志鹏. 熔融沉积法3D打印制备氧化锆陶瓷及其力学性能研究[J]. 无机材料学报, 2021, 36(4): 436-442.

ZHANG Li, YANG Xianfeng, XU Xiewen, GUO Jinyu, ZHOU Zhe, LIU Peng, XIE Zhipeng. 3D Printed Zirconia Ceramics via Fused Deposit Modeling and Its Mechanical Properties[J]. Journal of Inorganic Materials, 2021, 36(4): 436-442.

图/表 7

图1 制备样品打印路径示意图

Fig. 1 Printing path for sample preparation (a) Single line pattern; (b) “Single line + rectangle” pattern; (c) Porous ceramic

图2 混合料的流变学性质和打印性能

Fig. 2 Rheology and printability of the feedstock (a) Viscosity at various shear rate at 170 ℃; (b) Schematic diagram of the extrusion mechanism; (c) Unsupported structures with different inclinations; (d) Unsupported structures with different spans

图3 打印坯和烧结陶瓷的SEM照片

Fig. 3 SEM images of the printed green body and sintered ceramics (a) Surface of the green body and partial enlarged SEM image; (b) SEM image of fracture surface of green body; (c) Partial enlarged SEM image of Fig. 3(b); (d) Surface of the sintered part and partial enlarged SEM image; (e) SEM image of fracture surface of sintered part; (f) Partial enlarged SEM image of Fig. 3(e)

图4 3D打印致密氧化锆陶瓷

Fig. 4 3D printed dense zirconia ceramics (a) Surface of single line filling mode; (b) Surface of “single line+rectangle” filling mode; (c) Densities of the printed green bodies and sintered ceramics; (d) Printed and sintered rectangular bar; (e) Sintered 3D Chinese letters; (f) Sintered dental ceramics, turbine rotor and impeller

图5 (a)打印坯体和烧结陶瓷的抗弯强度; (b)抗弯强度的Weibull模数

Fig. 5 (a) Flexural strength of printed green body and sintered ceramics; (b) Weibull modulus of the flexural strength

图6 3D打印多孔氧化锆陶瓷

Fig. 6 3D printing porous zirconia ceramics (a) Picture of zirconia porous ceramics; (b) Enlarged view of pore structure; (c) Microstructure of the intersection area of the printing path; (d) Microstructure of the fracture surface of the pore walls

图7 多孔陶瓷的力学性能

Fig. 7 Mechanical properties of porous ceramics (a) Compressive strength vs porosity; (b) Stress-strain curves of the porous ceramics with different porosities

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熔融沉积法3D打印制备氧化锆陶瓷及其力学性能研究

3D Printed Zirconia Ceramics via Fused Deposit Modeling and Its Mechanical Properties

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