High temperature thermodynamics of spinodal decomposition in arc deposited TixNbyAlzN coatingsShow others and affiliations
2018 (English)In: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 150, p. 165-170Article in journal (Refereed) Published
Abstract [en]
Using first principles calculations and experimental methods we show that B1 structured solid solution TixNbyAlzN can be grown. The mixing free energy surface indicates that the alloys should decompose. Theoretical analysis of the thermodynamic driving force towards the spinodal decomposition shows that the force can be different in alloys with equally low thermodynamic stability but different Nb content, indicating that the detailed picture of the decomposition should also be different. Electron microscopy and nanoindentation underlines different age hardening of the samples. We demonstrate that an alloy with the optimized composition, Ti0.42Nb0.17Al0.41N combines high thermal stability and age hardening behavior.
Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 150, p. 165-170
Keywords [en]
Hard coating films; NbN; Cathodic arc deposition; Thermodynamic stability; Hardness
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:liu:diva-148238DOI: 10.1016/j.matdes.2018.04.033ISI: 000432565300019Scopus ID: 2-s2.0-85045795846OAI: oai:DiVA.org:liu-148238DiVA, id: diva2:1213614
Note
Funding Agencies|VINN Excellence Center Functional Nanoscale Materials (FunMat-II) [201605156]; Swedish Research Council (VR) [201504391]; Swedish Foundation for Strategic Research (SSF) program [621-2012-4401]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) [2009-00971]; Vinnova [201302355]; Ministry of Education and Science of the Russian Federation [14.Y26.31.0005, K2-2017-080, 211]
2018-06-052018-06-052024-01-08Bibliographically approved