دورية أكاديمية
Anisotropic super-hardness of hexagonal WB2±z thin films
| العنوان: | Anisotropic super-hardness of hexagonal WB2±z thin films |
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| المؤلفون: | C. Fuger, R. Hahn, L. Zauner, T. Wojcik, M. Weiss, A. Limbeck, O. Hunold, P. Polcik, H. Riedl |
| المصدر: | Materials Research Letters, Vol 10, Iss 2, Pp 70-77 (2022) |
| بيانات النشر: | Taylor & Francis Group, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials |
| مصطلحات موضوعية: | wb2, physical vapour deposition, dft, structural defects, anisotropy, super-hardness, Materials of engineering and construction. Mechanics of materials, TA401-492 |
| الوصف: | Transition metal diboride-based thin films are promising candidates to replace state-of-the-art protective and functional coating materials due to their unique properties. Here, we focus on hexagonal WB2-z, showing that the AlB2 structure is stabilized by B vacancies exhibiting its energetic minima at sub-stoichiometric WB1.5. Nanoindentation reveals super-hardness of 0001 oriented α-WB2-z coatings, linearly decreasing by more than 15 GPa with predominant 10 $ \bar{1} $ 1 orientation. This anisotropy is attributed to differences in the generalized stacking fault energy of basal and pyramidal slip systems, highlighting the feasibility of tuning mechanical properties by crystallographic orientation relations. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2166-3831 21663831 |
| Relation: | https://doaj.org/toc/2166-3831 |
| DOI: | 10.1080/21663831.2021.2021308 |
| URL الوصول: | https://doaj.org/article/251207c008064977ab545a03781f5a9d |
| رقم الأكسشن: | edsdoj.251207c008064977ab545a03781f5a9d |
| قاعدة البيانات: | Directory of Open Access Journals |
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Full Text Finder | تدمد: | 21663831 |
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| DOI: | 10.1080/21663831.2021.2021308 |