Influence of sintering temperature and CVI time on mechanical properties of 3D-printed alumina ceramics

doi:10.1016/j.matlet.2020.129096

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	Influence of sintering temperature and CVI time on mechanical properties of 3D-printed alumina ceramics
	Li, He 4,5; Liu, Yongsheng 4,5; Liu, Yansong 4,5; Zeng, Qingfeng 4; Gu, Yue 1; Duan, Wenyan 1; Dou, Rui 3; Liang, Jingjing 2; Li, Jinguo 2
刊名	MATERIALS LETTERS
	2021-02-15
卷号	285 页码:5
关键词	3D printing Ceramics Chemical vapor infiltration (CVI) Microstructure Sintering
ISSN号	0167-577X
DOI	10.1016/j.matlet.2020.129096
通讯作者	Liu, Yongsheng(yongshengliu@nwpu.edu.cn) ; Dou, Rui(ruidou6@hotmail.com)
英文摘要	Recently, complex-shaped ceramic components are being fabricated by using 3D printing and subsequent chemical vapor infiltration (CVI) processes. The results indicate that both sintering temperature and CVI time significantly influence mechanical properties of 3D-printed ceramic components. At the sintering temperature of 1500 degrees C, the pores are reduced during sintering and the ceramic components exhibit significant shrinkage, whereas, at the sintering temperature of 1500 degrees C, the shape of grains is changed from spherical to cylindrical, which increases the pore size and expands the ceramic parts. Moreover, the ceramic parts are severely densified after sintering at 1500 degrees C due to high sintering temperature. As 3D printed ceramic parts render low strength after sintering at 1500 degrees C, the subsequent CVI process is carried out to increase the flexural strength (2 times) by introducing SiC, and in turn, improving the density of ceramics. One should note that the CVI-induced SiC is deposited on the surface of Al2O3 grains, improving the strength of the ceramics. The proposed sintering mechanism consists of the deformation of grains and subsequent densification, leading to the deformation of ceramic components.
资助项目	National Key Research and Development Program of China[2018YFB1106600] ; Chinese National Foundation for Natural Sciences[51672217] ; Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University[CX202006]
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000612300000009
资助机构	National Key Research and Development Program of China ; Chinese National Foundation for Natural Sciences ; Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/160784]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Yongsheng; Dou, Rui
作者单位	1.Chinese Acad Sci, Key Lab Space Mfg Technol SMT, Beijing 100094, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Jiangnan Univ, Sch Mech Engn, Wuxi 214122, Jiangsu, Peoples R China 4.Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China 5.Northwestern Polytech Univ, NPU SAS Joint Res Ctr Adv Ceram, Xian 710072, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, He,Liu, Yongsheng,Liu, Yansong,et al. Influence of sintering temperature and CVI time on mechanical properties of 3D-printed alumina ceramics[J]. MATERIALS LETTERS,2021,285:5.
APA	Li, He.,Liu, Yongsheng.,Liu, Yansong.,Zeng, Qingfeng.,Gu, Yue.,...&Li, Jinguo.(2021).Influence of sintering temperature and CVI time on mechanical properties of 3D-printed alumina ceramics.MATERIALS LETTERS,285,5.
MLA	Li, He,et al."Influence of sintering temperature and CVI time on mechanical properties of 3D-printed alumina ceramics".MATERIALS LETTERS 285(2021):5.