Microstructure and mechanical properties of 3D-printed nano-silica reinforced alumina cores

doi:10.1016/j.ceramint.2022.06.301

IMR OpenIR

	Microstructure and mechanical properties of 3D-printed nano-silica reinforced alumina cores
	Liu, Jiaqi 1; Li, Qiaolei 2,3; Huo, Mingda 1; Zhang, Xiuyuan 1; Yue, Xinyan 1,4; Liang, Jingjing 2,5; Li, Jinguo 2,5
通讯作者	Li, Qiaolei(lql_614@163.com) ; Yue, Xinyan(yuexy@atm.neu.edu.cn) ; Li, Jinguo(jgli@imr.ac.cn)
	2022-10-15
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	48 期号:20 页码:30282-30293
摘要	Ceramic cores are an important component in the preparation of hollow turbine blades for aero-engines. Compared with traditional hot injection technology, 3D printing technology overcomes the disadvantages of a long production cycle and the difficulty in producing highly complex ceramic cores. The ceramic cores of hollow turbine blades require a high bending strength at high temperatures, and nano-mineralizers greatly improve their strength. In this study, nano-silica-reinforced alumina-based ceramic cores were prepared, and the effects of nanopowder content on the microstructure and properties of the ceramic cores were investigated. Alumina-based ceramic cores contained with nano-silica were prepared using the vat photopolymerization 3D printing technique and sintered at 1500 ?. The results showed that the linear shrinkage of ceramic cores first increased and then decreased as the nano-silica powder content increased, and the bending strength showed the same trend. The fracture mode changed from intergranular to transgranular. The open porosity and bulk density fluctuated slightly. The weight loss rate was approximately 20%. When the nano-silica content was 3%, the bending strength reached a maximum of 46.2 MPa and 26.1 MPa at 25 ? and 1500 ?, respectively. The precipitation of the glass phase, change in the fracture mode of the material, pinning crack of nanoparticles, and reduction of fracture energy due to the interlocking of cracks, were the main reasons for material strengthening. The successful preparation of 3D printed nano-silica reinforced alumina-based ceramic cores is expected to promote the preparation of high-performance ceramic cores with complex structures of hollow turbine blades.
关键词	Ceramic cores 3D printing Nano particle Microstructure Mechanical properties
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.2022.06.301
收录类别	SCI
语种	英语
资助项目	National Key Research and Devel- opment Program of China[2021YFB3702503] ; National Key Research and Devel- opment Program of China[2021YFB3702500] ; National Science and Technology Major Project[2019 -VII -0019-0161] ; National Science and Technology Major Project[Y2019 -VII -0011-0151] ; Fundamental Research Funds for the Central Universities[WK5290000002]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000848682600002
出版者	ELSEVIER SCI LTD
引用统计	被引频次：12[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/321006/175068
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	Liu, Jiaqi,Li, Qiaolei,Huo, Mingda,et al. Microstructure and mechanical properties of 3D-printed nano-silica reinforced alumina cores[J]. CERAMICS INTERNATIONAL,2022,48(20):30282-30293.
APA	Liu, Jiaqi.,Li, Qiaolei.,Huo, Mingda.,Zhang, Xiuyuan.,Yue, Xinyan.,...&Li, Jinguo.(2022).Microstructure and mechanical properties of 3D-printed nano-silica reinforced alumina cores.CERAMICS INTERNATIONAL,48(20),30282-30293.
MLA	Liu, Jiaqi,et al."Microstructure and mechanical properties of 3D-printed nano-silica reinforced alumina cores".CERAMICS INTERNATIONAL 48.20(2022):30282-30293.