Progress, challenges, and opportunities in the synthesis, characterization, and application of metal-boride-derived two-dimensional nanostructures

H Gunda, LE Klebanoff, PA Sharma… - ACS Materials …, 2021 - ACS Publications
Two-dimensional (2D) metal-boride-derived nanostructures have been a focus of intense
research for the past decade, with an emphasis on new synthetic approaches, as well as on …

[HTML][HTML] Thermal stability and mechanical properties of sputtered (Hf, Ta, V, W, Zr)-diborides

A Kirnbauer, A Wagner, V Moraes, D Primetzhofer… - Acta Materialia, 2020 - Elsevier
Non-reactive magnetron sputtering of a diboride target composed of HfB 2, TaB 2, VB 2, W 2
B 5, and ZrB 2 with equimolar composition leads to the formation of crystalline single-phase …

Chemical potential-modulated ultrahigh-phase-purity growth of ultrathin transition-metal boride single crystals

J Si, J Yu, H Lan, L Niu, J Luo, Y Yu, L Li… - Journal of the …, 2023 - ACS Publications
Two-dimensional (2D) transition-metal borides (TMBs) are especially expected to exhibit
excellent performance in various fields among electricity, superconductivity, magnetism …

Quaternary diborides—improving the oxidation resistance of TiB2 ± z coatings by disilicide alloying

A Bahr, O Beck, T Glechner, A Grimmer… - Materials Research …, 2023 - Taylor & Francis
To overcome the limited oxidation resistance of the emerging class of transition metal
borides, we suggest within this study novel quaternary diborides, Ti-TM-Si-B2±z (TM= Ta …

Ceramic transition metal diboride superlattices with improved ductility and fracture toughness screened by ab initio calculations

T Fiantok, N Koutná, DG Sangiovanni, M Mikula - Scientific Reports, 2023 - nature.com
Inherent brittleness, which easily leads to crack formation and propagation during use, is a
serious problem for protective ceramic thin-film applications. Superlattice architectures, with …

Sorting transition-metal diborides: New descriptor for mechanical properties

X Gu, C Liu, H Guo, K Zhang, C Chen - Acta Materialia, 2021 - Elsevier
An enduring quest in materials research is to reconcile two of the most prominent yet often
conflicting mechanical properties, hardness and toughness. Strong covalent solids like …

Anisotropic super-hardness of hexagonal WBz thin films

C Fuger, R Hahn, L Zauner, T Wojcik… - Materials Research …, 2022 - Taylor & Francis
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 …

Mechanistic study of superlattice-enabled high toughness and hardness in MoN/TaN coatings

R Hahn, N Koutná, T Wójcik, A Davydok… - Communications …, 2020 - nature.com
Machining and forming tools exposed to challenging environments require protective
coatings to extend their lifetime and reliability. Although transition metal nitrides possess …

[HTML][HTML] Impact of vacancies on structure, stability and properties of hexagonal transition metal diborides, MB2 (M= Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, and Fe)

M Dahlqvist, J Rosen - Materialia, 2022 - Elsevier
In this study, we have used density functional theory (DFT) calculations to characterize if and
how defects influence the stability and electronic/mechanical properties of MB 2 (AlB 2-type) …

[HTML][HTML] Unraveling the superlattice effect for hexagonal transition metal diboride coatings

R Hahn, AA Tymoszuk, T Wojcik, E Ntemou, O Hunold… - Scripta Materialia, 2023 - Elsevier
Superlattice structures enable the simultaneous enhancement in hardness (H) and fracture
toughness (K IC) of ceramic-like coatings. While a deeper understanding of this effect has …