Material extrusion-based additive manufacturing of zirconia toughened alumina: Machinability, mechanical properties and biocompatibility

被引:19
|
作者
Yu, Tianyu [1 ,2 ]
Zhu, Xiaolong [3 ]
Yu, Hongwei [2 ]
Wu, Pan [2 ]
Li, Chun [4 ]
Han, Xiaoxiao [3 ]
Chen, Mingjun [1 ,2 ]
机构
[1] Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Peoples R China
[3] Hunan Univ, Coll Mech & Vehicle Engn, Changsha 410082, Peoples R China
[4] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
基金
中国国家自然科学基金;
关键词
Zirconia-toughened alumina; Additive manufacturing; Direct ink writing; Ceramics; Biocompatibility; CERAMICS; ZTA; COMPOSITE; RESISTANCE; SIZE;
D O I
10.1016/j.jmapro.2023.03.052
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Material extrusion-based additive manufacturing (MEAM) has gained significant attention due to its versatile flexibility for fabricating a broad range of materials. In this study, fabrication of dense zirconia-toughened alumina (ZTA) ceramics with micro/nano powders of excellent mechanical and biological properties was investigated. The ZTA paste rheology was engineered to achieve appropriate rheological behavior. A novel machining scheme on MEAM produced ZTA green parts using CNC milling and high precision micro-milling was studied to investigate their effect on surface integrity and geometric accuracy. The MEAM produced ZTA ce-ramics show the highest relative density, Vickers hardness, bending strength, and fracture toughness of 99 %, 17.7 GPa, 422.5 MPa, and 6.2 MPa*m1/2, respectively. Biocompatibility of fabricated ZTA ceramics with different size of powders was investigated including cell adhesion, cell toxicity and cell proliferation, showing a good potential in biomedical usage. This framework provides a unique pathway for MEAM of ZTA ceramics to combine design and manufacturing freedom, multifunctionality, stability, and economical simultaneously.
引用
收藏
页码:120 / 132
页数:13
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