Influence of debinding holding time on mechanical properties of 3D-printed alumina ceramic cores

doi:10.1016/j.ceramint.2020.10.061

CORC > 金属研究所 > 中国科学院金属研究所

	Influence of debinding holding time on mechanical properties of 3D-printed alumina ceramic cores
	Li, He 1,2; Liu, Yongsheng 1,2; Liu, Yansong 1,2; Zeng, Qingfeng 1; Hu, Kehui 3,4; Lu, Zhigang 3,4; Liang, Jingjing 5; Li, Jinguo 5
刊名	CERAMICS INTERNATIONAL
	2021-02-15
卷号	47 期号:4 页码:11
关键词	3D printing Ceramic cores Holding time Debinding Mechanical properties
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2020.10.061
通讯作者	Liu, Yongsheng(yongshengliu@nwpu.edu.cn)
英文摘要	Herein, alumina green bodies are fabricated by three dimensional (3D) printing technology, then, the influence of debinding holding time under vacuum and argon on mechanical properties is systematically investigated by comparing the changes in microstructure, bulk density, open porosity, grain connection situation and flexural strength of ceramics. The flexural strength of alumina ceramics acquired the maximum values of 26.4 +/- 0.7 MPa and 25.1 +/- 0.5 MPa after debinding under vacuum and argon for 120 min and 180 min, respectively. However, the alumina ceramics rendered the flexural strength of 19.4 +/- 0.6 MPa and 9.5 +/- 0.4 MPa under vacuum and argon without extended holding time, respectively. The relatively low mechanical properties can be mainly attributed to the weak interlayer binding force, which is caused by layer-by-layer forming mode during 3D printing process and anisotropic shrinkage during the sintering process. Moreover, the alumina ceramics exhibited moderate bulk density and open porosity of 2.4 g/cm(3) and 42% after the sintering process, respectively, which are mainly influenced by the microstructural evolution of alumina ceramics during thermal treatment. Also, the diffusion of gases is achieved by curing of photosensitive resin and influenced by different holding times during debinding, affecting the mechanical properties of sintered ceramics. The mechanical properties of as-sintered ceramics are suitable for the utilization of ceramic cores in the manufacturing of hollow blades.
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
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000608686200006
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/321006/159053]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Yongsheng
作者单位	1.Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China 2.Northwestern Polytech Univ, NPU SAS Joint Res Ctr Adv Ceram, Xian 710072, Shaanxi, Peoples R China 3.Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China 4.Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, He,Liu, Yongsheng,Liu, Yansong,et al. Influence of debinding holding time on mechanical properties of 3D-printed alumina ceramic cores[J]. CERAMICS INTERNATIONAL,2021,47(4):11.
APA	Li, He.,Liu, Yongsheng.,Liu, Yansong.,Zeng, Qingfeng.,Hu, Kehui.,...&Li, Jinguo.(2021).Influence of debinding holding time on mechanical properties of 3D-printed alumina ceramic cores.CERAMICS INTERNATIONAL,47(4),11.
MLA	Li, He,et al."Influence of debinding holding time on mechanical properties of 3D-printed alumina ceramic cores".CERAMICS INTERNATIONAL 47.4(2021):11.