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Effect of sintering temperature in argon atmosphere on microstructure and properties of 3D printed alumina ceramic cores
Li,He1,2; Liu,Yongsheng1,2; Liu,Yansong1,2; Zeng,Qingfeng1; Hu,Kehui3,4; Lu,Zhigang3,4; Liang,Jingjing5
Corresponding AuthorLiu,Yongsheng(yongshengliu@nwpu.edu.cn) ; Zeng,Qingfeng(qfzeng@nwpu.edu.cn)
2020-04-07
Source PublicationJournal of Advanced Ceramics
ISSN2226-4108
Volume9Issue:2Pages:220-231
AbstractAbstractAlumina ceramics with different sintering temperatures in argon atmosphere were obtained using stereolithography-based 3D printing. The effects of sintering temperature on microstructure and physical and mechanical properties were investigated. The results show that the average particle size, shrinkage, bulk density, crystallite size, flexural strength, Vickers hardness, and nanoindentation hardness increased with the increase in sintering temperature, whereas the open porosity decreased with increasing sintering temperature. No change was observed in phase composition, chemical bond, atomic ratio, and surface roughness. For the sintered samples, the shrinkage in Z direction is much greater than that in X or Y direction. The optimum sintering temperature in argon atmosphere is 1350 °C with a shrinkage of 3.0%, 3.2%, and 5.5% in X, Y, and Z directions, respectively, flexural strength of 26.7 MPa, Vickers hardness of 198.5 HV, nanoindentation hardness of 33.1 GPa, bulk density of 2.5 g/cm3, and open porosity of 33.8%. The optimum sintering temperature was 70 °C higher than that sintering in air atmosphere when achieved the similar properties.
Keywordsintering temperature argon atmosphere alumina ceramics microstructure stereolithography
DOI10.1007/s40145-020-0362-0
Language英语
WOS IDBMC:10.1007/s40145-020-0362-0
PublisherTsinghua University Press
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80476
Collection中国科学院金属研究所
Corresponding AuthorLiu,Yongsheng; Zeng,Qingfeng
Affiliation1.Northwestern Polytechnical University; Science and Technology on Thermostructural Composite Materials Laboratory
2.Northwestern Polytechnical University; NPU-SAS Joint Research Center of Advanced Ceramics
3.Tsinghua University; Department of Mechanical Engineering
4.Tsinghua University; State Key Laboratory of Tribology
5.Chinese Academy of Sciences; Institute of Metal Research
Recommended Citation
GB/T 7714
Li,He,Liu,Yongsheng,Liu,Yansong,et al. Effect of sintering temperature in argon atmosphere on microstructure and properties of 3D printed alumina ceramic cores[J]. Journal of Advanced Ceramics,2020,9(2):220-231.
APA Li,He.,Liu,Yongsheng.,Liu,Yansong.,Zeng,Qingfeng.,Hu,Kehui.,...&Liang,Jingjing.(2020).Effect of sintering temperature in argon atmosphere on microstructure and properties of 3D printed alumina ceramic cores.Journal of Advanced Ceramics,9(2),220-231.
MLA Li,He,et al."Effect of sintering temperature in argon atmosphere on microstructure and properties of 3D printed alumina ceramic cores".Journal of Advanced Ceramics 9.2(2020):220-231.
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