In-situ synthesis of high-performance Al2O3-based ceramic cores reinforced with core-shell structures

doi:10.1016/j.ceramint.2022.07.315

IMR OpenIR

	In-situ synthesis of high-performance Al2O3-based ceramic cores reinforced with core-shell structures
	Huo, Mingda 1; Li, Qiaolei 2,3; Liu, Jiaqi 1; Zhang, Xiuyuan 1; Yue, Xinyan 1,4; Liang, Jingjing 2,5; Li, Jinguo 2,5
通讯作者	Li, Qiaolei(qlli20b@imr.ac.cn) ; Yue, Xinyan(yuexy@atm.neu.edu.cn) ; Li, Jinguo(jgli@imr.ac.cn)
	2022-11-15
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	48 期号:22 页码:33693-33703
摘要	The complex structure of the ceramic cores is key to the preparation of an aero-engine hollow blade with excellent cooling performance. The traditional methods such as hot-press moulding are difficult to prepare complex-structured ceramic cores, and 3D printing technology provides a new idea for the preparation of complex-structured ceramic cores. Using SiO2 and Y2O3 as mineralizers in Al2O3-based ceramic cores, high-performance ceramic cores with a core-shell structure was successfully prepared by 3D printing. Additionally, the changes in microstructure and properties at different sintering temperatures were studied. The results showed that with an increase in the sintering temperature, a core-shell structure with Y2Si2O7 as the shell and Y2O3 as the core was formed, and the reinforced phases such as mullite were generated at the same time. The formation of core-shell particles suppressed the energy loss of cracks. The generation of the liquid phase led to the tight bonding of the Al2O3 particles. The synergistic effects of the core-shell structures and the reinforced phases enhanced the flexural strength. When the sintering temperature was 1380 degrees C, the comprehensive per-formance met the application requirements of the ceramic cores, and the flexural strength and porosity were 19.3 MPa (at 1500 degrees C) and 30.5%, respectively. The 3D-printed ceramic core by low-temperature sintering with a core-shell structure was successfully prepared, which promoted the wider application of DLP-3D printed ceramic cores technology in the field of precision casting. This is expected to reduce the energy consumption during the sintering process and promote the production of high-performance complex-structured ceramic cores.
关键词	Ceramic core 3D printing Core-shell structures Strength
资助者	National Key Research and Devel- opment Program of China ; National Science and Technology Major Project ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.ceramint.2022.07.315
收录类别	SCI
语种	英语
资助项目	National Key Research and Devel- opment Program of China ; National Science and Technology Major Project ; Fundamental Research Funds for the Central Universities ; [2021YFB3702500] ; [2021YFB3702503] ; [2019 -VII -0019-0161] ; [Y2019 -VII -0011-0151] ; [WK5290000003]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000869656800002
出版者	ELSEVIER SCI LTD
引用统计	被引频次：17[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/321006/176387
专题	中国科学院金属研究所
通讯作者	Li, Qiaolei; Yue, Xinyan; Li, Jinguo
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 4.Northeastern Univ, Inst Adv Ceram, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 5.Space Mfg Technol CAS Key Lab, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Huo, Mingda,Li, Qiaolei,Liu, Jiaqi,et al. In-situ synthesis of high-performance Al2O3-based ceramic cores reinforced with core-shell structures[J]. CERAMICS INTERNATIONAL,2022,48(22):33693-33703.
APA	Huo, Mingda.,Li, Qiaolei.,Liu, Jiaqi.,Zhang, Xiuyuan.,Yue, Xinyan.,...&Li, Jinguo.(2022).In-situ synthesis of high-performance Al2O3-based ceramic cores reinforced with core-shell structures.CERAMICS INTERNATIONAL,48(22),33693-33703.
MLA	Huo, Mingda,et al."In-situ synthesis of high-performance Al2O3-based ceramic cores reinforced with core-shell structures".CERAMICS INTERNATIONAL 48.22(2022):33693-33703.