材料科学技术(英文版)2022，Vol.104Issue(9) ：19-32.

Balancing flexural strength and porosity in DLP-3D printing Al2O3 cores for hollow turbine blades

Qiaolei Li Xiaolong An Jingjing Liang Yongsheng Liu Kehui Hu Zhigang Lu Xinyan Yue Jinguo Li Yizhou Zhou Xiaofeng Sun
材料科学技术(英文版)2022，Vol.104Issue(9) ：19-32.
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  • NETL
  • NSTL
  • 万方数据

Balancing flexural strength and porosity in DLP-3D printing Al2O3 cores for hollow turbine blades

Qiaolei Li 1Xiaolong An 1Jingjing Liang 2Yongsheng Liu 3Kehui Hu 4Zhigang Lu 4Xinyan Yue 5Jinguo Li 2Yizhou Zhou 6Xiaofeng Sun6
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作者信息

  • 1. School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China;Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
  • 2. Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;Space Manufacturing Technology(CAS Key Lab),Beijing 100094,China
  • 3. NPU-SAS Joint Research Center of Advanced Ceramics,Northwestern Polytechnical University,Xi'an 710072,China
  • 4. State Key Laboratory of Tribology,Tsinghua University,Beijing 100084,China
  • 5. School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China
  • 6. Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
  • 折叠

Abstract

High porosity and high strength are usually mutually exclusive in the preparation of ceramic materials.However,high porosity and flexural strength are required for the preparation of complex ceramic cores for hollow turbine blades.In this study,Al2O3 cores with high porosity and high flexural strength were successfully prepared using digital light processing(DLP)3D printing technology.The influence of sin-tering temperature on the microstructure,pore evolution,and flexural strength of the cores were investi-gated.With an increase in the sintering temperature,the porosity of the ceramic cores first increased and then decreased,reaching a maximum value of 35％at 1400℃.The flexural strength increased with the increase in sintering temperature,but at 1400℃the incremental enhancement of flexural strength was greatest.Combined with the core service requirements and core performance,this study selected 1400℃(open porosity of 35.1％and flexural strength of 20.3 MPa)as the optimal sintering temperature for the DLP-3D printed Al2O3 core.

Key words

3D printing/Ceramic cores/Flexural strength/Porosity/Sintering temperature

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基金项目

Funding from the National Key R&D Program of China(2018YFB1106600)

Fundamental Research Funds for Central Universities(WK5290000002)

出版年

2022
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量43
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