| Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites | |
| Chen, Juanjuan1,2; Chen, Jixin1 | |
| Corresponding Author | Chen, Jixin(jxchen@imr.ac.cn) |
| 2020-02-01 | |
| Source Publication | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| ISSN | 0955-2219 |
| Volume | 40Issue:2Pages:456-462 |
| Abstract | The glass phases formation and microstructural evolution in the h-BN/SiO2/Yb-Si-Al-O composite were investigated. Owing to the introduction of Al2O3, SiO2 could transform into amorphous silica at a lower temperature (similar to 1600 degrees C). On the other hand, with increasing temperature, Al3+ gradually dissolved into ytterbium silicate (Yb2Si2O2) and then accelerated the formation of amorphous Yb-Si-Al-O glass phase. Up to 1880 degrees C, fine spherical Yb-Si-Al-O glass particles and irregular amorphous silica distributed uniformly, which contributes to the excellent mechanical properties of the composite. The thermal stability study disclosed that more [A1O(4)] units could effectively inhibit crystallization of the Yb-Si-Al-O glass phase, but mechanical properties of composite still decreased slowly with increasing the heat treatment temperature. For example, the flexural strength of the composite with 1.5 wt.% Al2O3 decreased from 297 +/- 30 to 284 +/- 22 MPa as the treatment temperature rose from 800 to 1200 degrees C. |
| Keyword | h-BN based composite Dual glass phases Glass transition Microstructural evolution Thermal stability |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.jeurceramsoc.2019.10.028 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[50802099] ; National Natural Science Foundation of China[51072201] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000498292100033 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/136193 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Chen, Jixin |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, High Performance Ceram Div, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Juanjuan,Chen, Jixin. Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020,40(2):456-462. |
| APA | Chen, Juanjuan,&Chen, Jixin.(2020).Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,40(2),456-462. |
| MLA | Chen, Juanjuan,et al."Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 40.2(2020):456-462. |
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