| High-performance 3D-printed Al2O3 cores for low-temperature sintering | |
| Yang, Kun1; Li, Qiaolei2; Chen, Tianci1; Jin, Funan1; Liu, Xinggang1; Liang, Jingjing2,3; Li, Jinguo2,3 | |
| Corresponding Author | Li, Qiaolei(qlli@imr.ac.cn) ; Li, Jinguo(jgli@imr.ac.cn) |
| 2023-11-15 | |
| Source Publication | CERAMICS INTERNATIONAL
 |
| ISSN | 0272-8842 |
| Volume | 49Issue:22Pages:36894-36906 |
| Abstract | Superalloy single-crystal blades are essential components of aviation engines. The increased thrust-to-weight ratio in aviation engines necessitates more stringent requirements on the complex ceramic core formation of the internal cooling channel of the hollow blade. The progress of traditional hot injection processes for ceramic cores has difficulty meeting the increasingly complex core production requirements. Vat photopolymerization 3D-printing technology for ceramic core fabrication has the advantages of not requiring mold manufacturing and flexible shaping, making it widely used in the production of complex structured ceramic cores. In addition, the industrial applicability of Al2O3 ceramic cores is limited by their low performance and high sintering temperature. In this work, high-performance Al2O3 cores with low-temperature sintering were successfully fabricated using DLP-3D-printing technology. The effects of Y2SiO5 addition and sintering temperature on the microstructure and properties of Al2O3 ceramic cores were investigated. The sintering mechanism of Al2O3 ceramic cores was investigated through analysis of phase composition, microstructure, and thermodynamic calculations. The results of the work show that, the flexural strength and sintering shrinkage of the Al2O3 ceramic cores progressively increased as the sintering temperature increased, while the open porosity rapidly dropped. The density of the Al2O3 ceramic cores increases significantly when the sintering temperature exceeds 1450 degrees C. The optimum sintering temperature for the ceramic core (15 wt% addition of Y2SiO5) is 1350 degrees C, at which point the strength is 20.282 MPa and the open porosity is 39.31%. This work provides a new process of the high-performance Al2O3 ceramic cores for low-temperature sintering, which reveals the mechanism of Y2SiO5's effect on the densification of Al2O3 ceramics during sintering. |
| Keyword | Ceramic cores 3D printing Flexural strength Low-temperature sintering Al2O3 |
| Funding Organization | Defense Industrial Technology Development Program ; National Natural Sci-ence Foundation of China ; National Science and Technology Major Project ; National Key Research and Development Program of China ; Fundamental Research Funds for the Central Universities ; Students ' Innovation and Entrepreneurship Foun-dation of USTC |
| DOI | 10.1016/j.ceramint.2023.09.020 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Defense Industrial Technology Development Program[JCKY2022130C005] ; National Natural Sci-ence Foundation of China[U22A20129] ; National Science and Technology Major Project[2017-VI-0002 -0072] ; National Key Research and Development Program of China[2018YFB1106600] ; Fundamental Research Funds for the Central Universities[WK5290000003] ; Students ' Innovation and Entrepreneurship Foun-dation of USTC[CY2022G10] ; Students ' Innovation and Entrepreneurship Foun-dation of USTC[CY2022C24] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:001091259300001 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/177693 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, Qiaolei; Li, Jinguo |
| Affiliation | 1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Space Mfg Technol CAS Key Lab, Beijing 100094, Peoples R China |
| Recommended Citation GB/T 7714 | Yang, Kun,Li, Qiaolei,Chen, Tianci,et al. High-performance 3D-printed Al2O3 cores for low-temperature sintering[J]. CERAMICS INTERNATIONAL,2023,49(22):36894-36906. |
| APA | Yang, Kun.,Li, Qiaolei.,Chen, Tianci.,Jin, Funan.,Liu, Xinggang.,...&Li, Jinguo.(2023).High-performance 3D-printed Al2O3 cores for low-temperature sintering.CERAMICS INTERNATIONAL,49(22),36894-36906. |
| MLA | Yang, Kun,et al."High-performance 3D-printed Al2O3 cores for low-temperature sintering".CERAMICS INTERNATIONAL 49.22(2023):36894-36906. |
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