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首页> 外文期刊>CERAMICS INTERNATIONAL >The preparation of ZrO2-Al2O3 composite ceramic by SLA-3D printing and sintering processing
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The preparation of ZrO2-Al2O3 composite ceramic by SLA-3D printing and sintering processing

机译：通过SLA-3D印刷加工制备Zro2-Al2O3复合陶瓷陶瓷

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摘要

In this paper, the UV curable ZrO2-Al2O3 composite ceramic pastes based on SLA-3D printing technology were synthetized firstly, and the corresponding ceramic green bodies were 3D printed, and finally the ZrO2-Al2O3 composite ceramic parts were manufactured by a subsequent debinding and sintering process. Our work focuses on the investigation of the microstructure, hardness and fracture toughness of the printed ZrO2-Al2O3 composite ceramics sintered at different maximum sintering temperature and holding time. In case of the sintering temperature of 1500 degrees C and holding time of 60 min, the actual density, hardness and fracture toughness of the ceramics can reach 3.75 g/cm(3), 14.1 GPa and 4.05 MPa.m(1/2), respectively. If the sintering temperature is higher than 1500 degrees C, the abnormal grain growth can occur, resulting in some more reductions in the mechanical properties of ceramics; while when the sintering temperature is lower than 1500 degrees C, the lower driving force makes the grains not fully developed, resulting in a low density of ceramics and worse mechanical properties. With the increase of holding time, the sintering driving force is promoted, making for the grain growth. However, when holding time is more than 60 min, the actual density of ceramics almost remains unchanged, and the mechanical properties of ceramics are not able to be improved further.
机译：本文首先合成了基于SLA-3D印刷技术的UV可固化ZrO2-Al2O3复合陶瓷浆料，并且相应的陶瓷生坯为3D印刷，最后通过随后的逐步制造ZrO2-Al2O3复合陶瓷部件。烧结过程。我们的工作侧重于调查在不同最大烧结温度和保持时间的印刷ZrO2-Al2O3复合陶瓷的微观结构，硬度和断裂韧性。在烧结温度为1500℃的情况下保持60分钟，陶瓷的实际密度，硬度和断裂韧性可达到3.75g / cm（3），14.1GPa和4.05 MPa.m（1/2） ， 分别。如果烧结温度高于1500摄氏度，则可能发生异常晶粒生长，导致陶瓷的机械性能更多地减少;虽然当烧结温度低于1500℃时，较低的驱动力使得晶粒未完全开发，导致陶瓷的低密度和更差的机械性能。随着保持时间的增加，促进烧结驱动力，为晶粒生长制作。然而，当保持时间超过60分钟时，陶瓷的实际密度几乎保持不变，并且陶瓷的机械性能不能进一步改善。

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