| Microstructure and mechanical properties of 3D-printed nano-silica reinforced alumina cores | |
| Liu, Jiaqi1; Li, Qiaolei2,3; Huo, Mingda1; Zhang, Xiuyuan1; Yue, Xinyan1,4; Liang, Jingjing2,5; Li, Jinguo2,5 | |
| Corresponding Author | Li, Qiaolei(lql_614@163.com) ; Yue, Xinyan(yuexy@atm.neu.edu.cn) ; Li, Jinguo(jgli@imr.ac.cn) |
| 2022-10-15 | |
| Source Publication | CERAMICS INTERNATIONAL
 |
| ISSN | 0272-8842 |
| Volume | 48Issue:20Pages:30282-30293 |
| Abstract | 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. |
| Keyword | Ceramic cores 3D printing Nano particle Microstructure Mechanical properties |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000848682600002 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/175068 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, Qiaolei; Yue, Xinyan; Li, Jinguo |
| Affiliation | 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 |
| Recommended Citation 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. |
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