liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Structure evolution and mechanical properties of co-sputtered Zr-Al-B-2 thin films
Comenius Univ, Slovakia; Comenius Univ, Slovakia.
Comenius Univ, Slovakia.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
Comenius Univ, Slovakia.
Show others and affiliations
2022 (English)In: Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films, ISSN 0734-2101, E-ISSN 1520-8559, Vol. 40, no 3, article id 033414Article in journal (Refereed) Published
Abstract [en]

Zirconium diboride (ZrB2) represents a promising hard coating material for demanding high-temperature applications and could provide an excellent basis for fine-tuning mechanical properties via the concept of alloying. Here, combining density functional theory and experiments, we investigate the effect of aluminum alloying on thermally induced structure evolution and mechanical properties of alpha-structured Zr1-xAlxB2+Delta. Ab initio calculations predict a strong tendency for spinodal phase separation of hexagonal Zr1-xAlxB2 solid solution into isostructural binaries. Experimental results confirm predictions of the insolubility of aluminum in the ZrB2 phase when the structure of magnetron co-sputtered Zr0.72Al0.28B2.64 films with an aluminum content of 8 at. % has a nanocomposite character consisting of hexagonal alpha-ZrB2 nanocolumns surrounded by an amorphous Al-rich tissue phase. The films are structurally stable up to 1100 degrees C but out-diffusion of Al atoms from boundary regions during annealing was observed. Al alloying causes a significant decrease in hardness when the hardness of the reference as-deposited ZrB2.2 and Zr0.72Al0.28B2.64 is 39 and 23 GPa, respectively. Low hardening effect in ternaries was observed after annealing at 1000 degrees C when the hardness increased from 23.5 to 26.5 GPa due to the locally increased concentration of point defects at the boundaries of the nanocolumns and Al-rich tissue phases. Youngs modulus decrease from 445 (ZrB2.2) to 345 GPa (Zr0.72Al0.28B2.64) indicates a change in the mechanical response of the ternary film toward more ductile behavior.

Place, publisher, year, edition, pages
A V S AMER INST PHYSICS , 2022. Vol. 40, no 3, article id 033414
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-187566DOI: 10.1116/6.0001802ISI: 000810231600001OAI: oai:DiVA.org:liu-187566DiVA, id: diva2:1690430
Note

Funding Agencies|Scientific Grant Agency [VEGA 1/0296/22]; European Space Agency (ESA) [4000132355/20/NL/SC]; Operational Program Integrated Infrastructure [ITMS 313011AUH4]; Austrian Science Fund (FWF) [T-1308]; Swedish Research Council [VR-2015-04630]

Available from: 2022-08-26 Created: 2022-08-26 Last updated: 2022-08-26

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Search in DiVA

By author/editor
Koutna, Nikola
By organisation
Thin Film PhysicsFaculty of Science & Engineering
In the same journal
Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 75 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf