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Scratch hardness of rare-earth substituted calcium aluminosilicate glasses
She, Jiangbo1,2; Sawamura, Shigeki1,3; Wondraczek, Lothar1
Department先进光电与生物材料研发中心
2019-03
Source PublicationJournal of Non-Crystalline Solids: X
ISSN25901591
Volume1
Contribution Rank1
AbstractWe report lateral deformation experiments on rare earth substituted glasses from percalcic CaO-Al2O3-SiO2-Tm2O3. Using instrumented Berkovich indentation with normal loads below 100 mN, the scratch hardness was obtained from the work of lateral deformation per deformed volume in the elastic-plastic regime. The positive effect of rare-earth substitution on normal hardness, Poisson's ratio and Young's modulus was found to extent also to scratch hardness: in 25CaO-15Al2O3-60SiO2, partial replacement of alumina by Tm2O3 leads to an enhancement of the scratch hardness by about 1 GPa per 2 mol% of substitution, reaching the highest values of scratch hardness which have been reported for oxide glasses thus far. The enhancement of scratch hardness is attributed to enhanced cation packing fraction and super-structural cohesion as a result of rare earth substitution. The previously reported linear correlation between scratch hardness and bulk modulus is confirmed. © 2019 The Authors
DOI10.1016/j.nocx.2019.100010
Indexed ByEI
Language英语
PublisherElsevier B.V.
EI Accession Number20191006599969
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/31312
Collection先进光电与生物材料研发中心
Corresponding AuthorWondraczek, Lothar
Affiliation1.Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Fraunhoferstraße 6, Jena; D-07743, Germany;
2.State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an; 710119, China;
3.AGC Inc., 1150 Hazawa-cho, Kanagawa-ku, Yokohama-shi; Kanagawa; 221-8755, Japan
Recommended Citation
GB/T 7714
She, Jiangbo,Sawamura, Shigeki,Wondraczek, Lothar. Scratch hardness of rare-earth substituted calcium aluminosilicate glasses[J]. Journal of Non-Crystalline Solids: X,2019,1.
APA She, Jiangbo,Sawamura, Shigeki,&Wondraczek, Lothar.(2019).Scratch hardness of rare-earth substituted calcium aluminosilicate glasses.Journal of Non-Crystalline Solids: X,1.
MLA She, Jiangbo,et al."Scratch hardness of rare-earth substituted calcium aluminosilicate glasses".Journal of Non-Crystalline Solids: X 1(2019).
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