Anisotropic super-hardness of hexagonal WB2±z thin films

C. Fuger; R. Hahn; L. Zauner; T. Wojcik; M. Weiss; A. Limbeck; O. Hunold; P. Polcik; H. Riedl

doi:10.1080/21663831.2021.2021308

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Anisotropic super-hardness of hexagonal WB2±z thin films

Original Reports | 更新时间：2026-08-19

- Anisotropic super-hardness of hexagonal WB2±z thin films
- Materials Research Letters Vol. 10, Issue 2, Pages: 70-77(2022)
- 作者机构：
  
  1. a Christian Doppler Laboratory for Surface Engineering of high-performance Components TU Wien
  2. b Institute of Chemical Technologies and Analytics TU Wien
  3. c Oerlikon Balzers Oerlikon Surface Solutions AG
  4. d Plansee Composite Materials GmbH
  5. a Christian Doppler Laboratory for Surface Engineering of high-performance Components TU Wien Wien Austria
  6. e Institute of Materials Science and Technology TU Wien
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2021.2021308
  CLC：
- Online First：17 January 2022，
  
  Published：2022
- 稿件说明：
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C. Fuger, R. Hahn, L. Zauner, et al. Anisotropic super-hardness of hexagonal WB2±z thin films[J]. Materials Research Letters, 2022, 10(2): 70-77.
DOI：

C. Fuger, R. Hahn, L. Zauner, et al. Anisotropic super-hardness of hexagonal WB2±z thin films[J]. Materials Research Letters, 2022, 10(2): 70-77. DOI： 10.1080/21663831.2021.2021308.

摘要

Abstract

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 WB

2-z

showing that the AlB

structure is stabilized by B vacancies exhibiting its energetic minima at sub-stoichiometric WB

1.5

. Nanoindentation reveals super-hardness of 0001 oriented α-WB

2-z

coatings

linearly decreasing by more than 15 GPa with predominant 101¯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.

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