Knowledge Management System Of Institute of process engineering,CAS
| High-entropy R2O3-Y2O3-TiO2-ZrO2-Al2O3 glasses with ultrahigh hardness, Young's modulus, and indentation fracture toughness | |
| Guo, Yongchang1,3; Li, Jianqiang1,2,3,4; Zhang, Ying1,3; Feng, Shaowei1,3; Sun, Hong1,3 | |
| 2021-07-23 | |
| Source Publication | ISCIENCE
 |
| Volume | 24Issue:7Pages:15 |
| Abstract | Glasses with high hardness, high Young's modulus, and high fracture toughness become crucial materials which are urgently needed in the protective covers for various electronic displays. Here, a paradigm is presented that the conceptual design of high-entropy materials is adaptable to high performance oxide glasses. We designed the multi-component glass compositions of 18.77R(2)O(3)-4.83Y(2)O(3)-28.22TiO(2)-8.75ZrO(2)-39.43Al(2)O(3) (R = La, Sm, Gd) and elaborated successfully the glassy samples through a containerless solidification process. The as-prepared samples demonstrated the outstanding mechanical and optical properties. The measured hardness, Young's modulus, and indentation fracture toughness of the high-entropy (R = Gd) glass are 12.58 GPa, 177.9 GPa, and 1.52 MPa.m(0.5), respectively, in which the hardness and Young's modulus exhibit the highest value among the reported oxide glasses. Structural analysis revealed that the excellent mechanical properties are attributed to the large dissociation energies and the high field strength of Al2O3, TiO2, and ZrO2 and the complex interaction between atoms caused by high entropy. |
| DOI | 10.1016/j.isci.2021.102735 |
| Language | 英语 |
| WOS Keyword | RARE-EARTH ALUMINATE ; ALUMINOSILICATE GLASSES ; VICKERS HARDNESS ; CRACK INITIATION ; RECENT PROGRESS ; AL-27 NMR ; ALLOY ; MICROSTRUCTURE ; STABILITY ; DIFFUSION |
| Funding Project | Beijing Municipal Science and Technology Project[Z191100004819002] ; National Natural Science Foundation of China[51972304] ; Project of Scientific Experiment on Chinese Manned Space Station |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| Funding Organization | Beijing Municipal Science and Technology Project ; National Natural Science Foundation of China ; Project of Scientific Experiment on Chinese Manned Space Station |
| WOS ID | WOS:000677580600041 |
| Publisher | CELL PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/49863 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Li, Jianqiang |
| Affiliation | 1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Guo, Yongchang,Li, Jianqiang,Zhang, Ying,et al. High-entropy R2O3-Y2O3-TiO2-ZrO2-Al2O3 glasses with ultrahigh hardness, Young's modulus, and indentation fracture toughness[J]. ISCIENCE,2021,24(7):15. |
| APA | Guo, Yongchang,Li, Jianqiang,Zhang, Ying,Feng, Shaowei,&Sun, Hong.(2021).High-entropy R2O3-Y2O3-TiO2-ZrO2-Al2O3 glasses with ultrahigh hardness, Young's modulus, and indentation fracture toughness.ISCIENCE,24(7),15. |
| MLA | Guo, Yongchang,et al."High-entropy R2O3-Y2O3-TiO2-ZrO2-Al2O3 glasses with ultrahigh hardness, Young's modulus, and indentation fracture toughness".ISCIENCE 24.7(2021):15. |
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