Microstructure, mechanical properties, friction and wear performance, and cytotoxicity of additively manufactured zirconia-toughened alumina for dental applications
Microstructure, mechanical properties, friction and wear performance, and cytotoxicity of additively manufactured zirconia-toughened alumina for dental applications
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用于牙科应用的增材制造氧化锆增韧氧化铝的微观结构、机械性能、摩擦磨损性能以及细胞毒性
DOI：
10.1016/j.compositesb.2022.110459
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发表时间：
2023-02
期刊：
影响因子：
--
通讯作者：
Jianfeng Ma
中科院分区：
文献类型：
--
作者：
Li Zhu;Yidi Xu;Siwen Liu;Huanhuan Chen;Jiyi Tao;Xian Tong;Yuncang Li;Shengbin Huang;Jixing Lin;Cuie Wen;Jianfeng Ma
氧化锆增韧氧化铝（ZTA）陶瓷由于其高的机械强度、韧性、耐磨性、化学耐久性和生物相容性而具有潜在的牙科修复和修复应用。然而，在传统的临床处理中，ZTA陶瓷的计算机辅助设计/计算机辅助制造之后，存在大量由应力积累引起的裂纹萌生以及材料浪费。在这项研究中，我们使用立体光刻（SLA）技术制备了ZTA绿色压块，然后在1450 °C和1650 °C之间的高温下烧结。研究了ZTA陶瓷的显微结构、力学性能、摩擦磨损性能和细胞毒性。结果表明：ZTA陶瓷烧结前后均由α-Al 2 O3、m-ZrO 2和t-ZrO 2相组成。随着烧结温度从1450 °C提高到1650 °C，ZTA样品的密度、力学性能、硬度和耐磨性能逐渐提高。在1650 °C烧结的相对密度为96.65%的ZTA样品显示出最佳的机械性能，其弯曲强度为572.0 MPa，维氏硬度为16.2 GPa，断裂韧性为7.4 MPa m1/2。烧结的ZTA样品对MC 3 T3-E1细胞表现出良好的细胞活力。
Zirconia-toughened alumina (ZTA) ceramic has potential dental restoration and repair applications due to its high mechanical strength, toughness, wear resistance, chemical durability, and biocompatibility. Nevertheless, there is a great deal of crack initiation caused by stress accumulation and also material wastage after computer-aided design/computer-aided manufacturing of ZTA ceramics in conventional clinical processing. In this study, we prepared a ZTA green compact using Stereolithography (SLA) technology followed by sintering at high temperatures ranging between 1450 °C and 1650 °C. The microstructures, mechanical properties, friction and wear performance, and cytotoxicity of the ZTA ceramic were investigated. The results indicate that all ZTA samples were composed of α-Al2O3, m-ZrO2, and t-ZrO2phases before and after sintering. With increasing sintering temperatures from 1450 °C to 1650 °C, the density, mechanical properties, hardness, and wear performance of the ZTA samples were gradually improved. The ZTA sample sintered at 1650 °C with a relative density of 96.65% showed the best mechanical performance, with a flexural strength of 572.0 MPa, a Vickers hardness of 16.2 GPa, and a fracture toughness of 7.4 MPa m1/2. The sintered ZTA sample exhibited a good cell viability toward MC3T3-E1 cells.
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DOI：
10.4028/www.scientific.net/amr.583.91
发表时间：
2012-10
期刊：
Advanced Materials Research
影响因子：
--
作者：
Z. Xia;J. Hou;Li Ke
通讯作者：
Z. Xia;J. Hou;Li Ke
影响因子：
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影响因子：
13.1
作者：
Abdullah, Muhammad;Ahmad, Jamil;Mehmood, Mazhar
通讯作者：
Mehmood, Mazhar
DOI：
10.1016/j.jeurceramsoc.2021.08.029
发表时间：
2021-10-04
影响因子：
5.7
作者：
Tang, Jie;Guo, Xiaotian;Yang, Yong
通讯作者：
Yang, Yong