AlN/CrN multilayer structures with increased thermal stability. (15th March 2017)

• Record Type: Journal Article
• Authors: Liu, Shiyu; Yang, Yi; Ji, Rong; Zeng, X.T.; Clegg, W.J.
• Is Part Of: Scripta materialia. Number 130(2017)
• Page Start: 242
• Page End: 246
• Publication Date: 2017-03-15
• Subjects: Thermal stability -- Diffusion -- Nanolayered coating -- AlN/CrN; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.12.020
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: CrAlYN nanolayered coatings of greatly enhanced thermal stability have been developed by doping with levels of Y up to 9 at.%. This prevented the complete dissolution of the layered structure after annealing at 1100 °C in Ar for 1 h, commonly observed in coatings with little or no Y content, although the bilayer period increased from ~ 5 nm to ~ 10 nm. The improved thermal stability is attributed to the formation of a continuous YN layer between the CrN and AlN layers, reducing the rate of interdiffusion. Graphical abstract: