Silica strengthened alumina ceramic cores prepared by 3D printing

doi:10.1016/j.jeurceramsoc.2020.11.050

IMR OpenIR

	Silica strengthened alumina ceramic cores prepared by 3D printing
	Li, He 1,2; Liu, Yongsheng 1,2; Liu, Yansong 1,2; Zeng, Qingfeng 1; Liang, Jingjing 3
通讯作者	Liu, Yongsheng(yongshengliu@nwpu.edu.cn)
	2021-04-01
发表期刊	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN	0955-2219
卷号	41 期号:4 页码:2938-2947
摘要	Ceramic cores based on alumina and silica are important in the manufacturing of hollow blades. However, obtaining good properties and precision is still challenging. In this research, alumina-based ceramics cores were obtained by 3D printing technology, and the effects of silica contents on the mechanical properties of the as obtained alumina ceramic cores were evaluated. The results showed significant improvements in flexural strengths of the ceramics from 13.3 MPa to 46.3 MPa at silica contents from 0 wt% to 30 wt% due to formation of mullite phase (Al6Si2O13). By contrast, the flexural strengths declined as silica content further increased due to the generation of massive liquid phase. Also, porous structures and cracks were observed by scanning electron microscopy due to the removal of cured photosensitive resin and the mullitization reaction between alumina and silica, respectively. The manufacturing process of hollow blades required ceramic cores with flexural strengths greater than 20 MPa to resist the strike of metal liquid, as well as open porosity above 20 % to provide space for alkali liquor to dissolve the ceramic cores. As a result, 10 wt% silica was determined as the optimal value to yield ceramics with improved properties in terms of flexural strength (35.6 MPa) and open porosity (47.5 %), thereby satisfy the application requirement for the fabrication of ceramic cores.
关键词	Silica Alumina Ceramic cores 3D printing Mechanical properties
资助者	National Key Research and Development Program of China ; Chinese National Foundation for Natural Sciences ; Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University
DOI	10.1016/j.jeurceramsoc.2020.11.050
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000613646800006
出版者	ELSEVIER SCI LTD
引用统计	被引频次：72[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/159175
专题	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.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. Silica strengthened alumina ceramic cores prepared by 3D printing[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2021,41(4):2938-2947.
APA	Li, He,Liu, Yongsheng,Liu, Yansong,Zeng, Qingfeng,&Liang, Jingjing.(2021).Silica strengthened alumina ceramic cores prepared by 3D printing.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,41(4),2938-2947.
MLA	Li, He,et al."Silica strengthened alumina ceramic cores prepared by 3D printing".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 41.4(2021):2938-2947.