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High temperature thermodynamics of spinodal decomposition in arc deposited TixNbyAlzN coatings
Linköpings universitet, Institutionen för fysik, kemi och biologi, Teoretisk Fysik. Linköpings universitet, Tekniska fakulteten. Natl Univ Sci and Technol MISIS, Russia.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Nanostrukturerade material. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska fakulteten.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Teoretisk Fysik. Linköpings universitet, Tekniska fakulteten.
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2018 (engelsk)Inngår i: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 150, s. 165-170Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
Elsevier, 2018. Vol. 150, s. 165-170
Emneord [en]
Hard coating films; NbN; Cathodic arc deposition; Thermodynamic stability; Hardness
HSV kategori
Identifikatorer
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
Merknad

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]

Tilgjengelig fra: 2018-06-05 Laget: 2018-06-05 Sist oppdatert: 2018-06-12bibliografisk kontrollert

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