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Title: Growth and deformation structure of gradient and layer-gradient Ti-Al-Si-Cu-N coatings

The features of the growth structure and modification of gradient and layer-gradient Ti-Al-Si-Cu-N coatings in the areas of deformation and fracture during indentation and scratch testing were investigated using transmission and scanning electron microscopy methods. The influence of the concentration of alloying elements and displacement potential in the substrate on the secondary sputtering, phase composition and the level of combined torsion and bending of the crystal lattice of doped TiN were determined. It was found out that the size of the crystals in deformation location bands grows with deformation of gradient nanocrystal coatings. The article shows that layer-gradient coatings combining submicrocrystalline and nanocrystalline structures have the increased plasticity and fracture toughness due to enhanced density of interfaces and formation of the soft metal phase (Cu) in the surface layer.
Authors:
;  [1] ;  [2]
  1. Institute of Strength Physics and Materials Science SB RAS, Tomsk, 634055 (Russian Federation)
  2. National Research Tomsk State University, Tomsk, 634050 (Russian Federation)
Publication Date:
OSTI Identifier:
22390434
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1623; Journal Issue: 1; Conference: International Conference on Physical Mesomechanics of Multilevel Systems 2014, Tomsk (Russian Federation), 3-5 Sep 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM SILICIDES; BENDING; COATINGS; CONCENTRATION RATIO; COPPER; CRYSTAL LATTICES; CRYSTALS; DOPED MATERIALS; FRACTURE PROPERTIES; FRACTURES; INTERFACES; LAYERS; NANOSTRUCTURES; PLASTICITY; SCANNING ELECTRON MICROSCOPY; SPUTTERING; SUBSTRATES; SURFACES; TITANIUM NITRIDES