Fabrication of dense zirconia-toughened alumina ceramics through a stereolithography-based additive manufacturing
Fabrication of dense zirconia-toughened alumina ceramics through a stereolithography-based additive manufacturing
复制标题
通过基于立体光刻的增材制造制造致密氧化锆增韧氧化铝陶瓷
DOI：
10.1016/j.ceramint.2016.10.027
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发表时间：
2017-01-01
影响因子：
5.2
通讯作者：
Wu, Shanghua
中科院分区：
文献类型：
--
作者：
Wu, Haidong;Liu, Wei;Wu, Shanghua
我们报告了一种通过基于立体光刻的增材制造工艺来制造具有优异性能的致密氧化锆增韧氧化铝（ZTA）陶瓷的新方法。 XRD 图谱显示 ZTA 样品由 α-Al2O3 和 t-ZrO2 组成，其中 α-Al2O3 占主导地位。平均尺寸为0.35μm的氧化锆颗粒足够小，足以引发ZTA中氧化锆的增韧行为。制备的陶瓷的密度、维氏硬度、弯曲强度和断裂韧性分别为4.26 g/cm(3)、17.76 GPa、530.25 MPa和5.72 MPa·m(1/2)。这些性能与通过传统陶瓷加工获得的陶瓷的性能相当。
We report a novel approach to fabricate dense zirconia-toughened alumina (ZTA) ceramics with excellent properties via an additive manufacturing process based on stereolithography. The XRD patterns show the ZTA sample consists of alpha-Al2O3 and t-ZrO2 with the dominance of alpha-Al2O3. The zirconia grain with the average size of 0.35 mu m is small enough to trigger the toughening behavior of zirconia in the ZTA. The prepared ceramics showed a density, Vickers hardness, bending strength, and fracture toughness of 4.26 g/cm(3), 17.76 GPa, 530.25 MPa, and 5.72 MPa m(1/2), respectively. These properties are comparable to those for ceramics obtained through conventional ceramic processing.