liu.seSök publikationer i DiVA
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • 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.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tunnfilmsfysik. Linköpings universitet, Tekniska fakulteten.
Comenius Univ, Slovakia.
Visa övriga samt affilieringar
2022 (Engelska)Ingår i: Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films, ISSN 0734-2101, E-ISSN 1520-8559, Vol. 40, nr 3, artikel-id 033414Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
A V S AMER INST PHYSICS , 2022. Vol. 40, nr 3, artikel-id 033414
Nationell ämneskategori
Den kondenserade materiens fysik
Identifikatorer
URN: urn:nbn:se:liu:diva-187566DOI: 10.1116/6.0001802ISI: 000810231600001OAI: oai:DiVA.org:liu-187566DiVA, id: diva2:1690430
Anmärkning

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]

Tillgänglig från: 2022-08-26 Skapad: 2022-08-26 Senast uppdaterad: 2022-08-26

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Sök vidare i DiVA

Av författaren/redaktören
Koutna, Nikola
Av organisationen
TunnfilmsfysikTekniska fakulteten
I samma tidskrift
Journal of Vacuum Science & Technology. A. Vacuum, Surfaces, and Films
Den kondenserade materiens fysik

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 75 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf