Effect of Cu content on the structure, and performance of substoichiometric Cr-N coatings

Kyriaki Polychronopoulou; Nicholaos G. Demas; Peter N. Gibson; Claus Rebholz; Andreas A. Polycarpou

doi:10.1007/s11249-009-9572-x

Effect of Cu content on the structure, and performance of substoichiometric Cr-N coatings

Kyriaki Polychronopoulou
, Nicholaos G. Demas
, Peter N. Gibson
, Claus Rebholz
, Andreas A. Polycarpou

Mechanical & Nuclear Engineering

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Cu-Cr-N coatings with Cu contents between 3 and 65 at.%, Cu/Cr ratios in the 0.04-4.5 range and 21-27 at.% N, synthesized by twin electron-beam Physical Vapor Deposition at 450 °C, were investigated and compared against substoichiometric Cr-N reference samples. The main objective of this study is to study the influence of Cu on the structure, and the subsequent effects on the mechanical properties, room (22 °C) and high temperature (500 and 840 °C) tribological performance of Cu-Cr-N coatings. Using X-ray photoelectron spectroscopy, glancing angle X-ray diffraction and scanning electron microscopy, in combination with nanoindentation mechanical property measurements and laboratory-controlled ball-on-disc sliding experiments, it is shown that Cu-Cr-N coatings with low Cu content (3 at.%) possess sufficient wear resistance for high-temperature demanding tribological applications. The lubricious effect of oxide formation at high temperatures is also evaluated.

Original language	British English
Pages (from-to)	57-68
Number of pages	12
Journal	Tribology Letters
Volume	38
Issue number	1
DOIs	https://doi.org/10.1007/s11249-009-9572-x
State	Published - Apr 2010

Keywords

Coatings
Hardness
High temperature tribology
Oxides
XPS
XRD

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10.1007/s11249-009-9572-x

Cite this

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title = "Effect of Cu content on the structure, and performance of substoichiometric Cr-N coatings",

abstract = "Cu-Cr-N coatings with Cu contents between 3 and 65 at.\%, Cu/Cr ratios in the 0.04-4.5 range and 21-27 at.\% N, synthesized by twin electron-beam Physical Vapor Deposition at 450 °C, were investigated and compared against substoichiometric Cr-N reference samples. The main objective of this study is to study the influence of Cu on the structure, and the subsequent effects on the mechanical properties, room (22 °C) and high temperature (500 and 840 °C) tribological performance of Cu-Cr-N coatings. Using X-ray photoelectron spectroscopy, glancing angle X-ray diffraction and scanning electron microscopy, in combination with nanoindentation mechanical property measurements and laboratory-controlled ball-on-disc sliding experiments, it is shown that Cu-Cr-N coatings with low Cu content (3 at.\%) possess sufficient wear resistance for high-temperature demanding tribological applications. The lubricious effect of oxide formation at high temperatures is also evaluated.",

keywords = "Coatings, Hardness, High temperature tribology, Oxides, XPS, XRD",

author = "Kyriaki Polychronopoulou and Demas, \{Nicholaos G.\} and Gibson, \{Peter N.\} and Claus Rebholz and Polycarpou, \{Andreas A.\}",

note = "Funding Information: Acknowledgements The authors gratefully acknowledge the Air Conditioning and Refrigeration Center, an Industry-University Cooperative Research Center at the University of Illinois at Urbana-Champaign, the Center for Microanalysis of Materials, University of Illinois at Urbana-Champaign, which is partially supported by the Funding Information: U.S. Department of Energy under Grant DEFG02-91-ER45439, and the use of coating deposition equipment at TECVAC LTD, Cambridge, UK. K. Polychronopoulou and C. Rebholz gratefully acknowledge financial support from the European Commission (FP6 Marie Curie Actions Project EXT-0023899—NanoHeaters) and the Cyprus Fulbright Commission through a 2007 Fellowship for Advanced Research in the USA.",

year = "2010",

month = apr,

doi = "10.1007/s11249-009-9572-x",

language = "British English",

volume = "38",

pages = "57--68",

journal = "Tribology Letters",

issn = "1023-8883",

publisher = "Springer Science and Business Media, LLC",

number = "1",

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T1 - Effect of Cu content on the structure, and performance of substoichiometric Cr-N coatings

AU - Polychronopoulou, Kyriaki

AU - Demas, Nicholaos G.

AU - Gibson, Peter N.

AU - Rebholz, Claus

AU - Polycarpou, Andreas A.

N1 - Funding Information: Acknowledgements The authors gratefully acknowledge the Air Conditioning and Refrigeration Center, an Industry-University Cooperative Research Center at the University of Illinois at Urbana-Champaign, the Center for Microanalysis of Materials, University of Illinois at Urbana-Champaign, which is partially supported by the Funding Information: U.S. Department of Energy under Grant DEFG02-91-ER45439, and the use of coating deposition equipment at TECVAC LTD, Cambridge, UK. K. Polychronopoulou and C. Rebholz gratefully acknowledge financial support from the European Commission (FP6 Marie Curie Actions Project EXT-0023899—NanoHeaters) and the Cyprus Fulbright Commission through a 2007 Fellowship for Advanced Research in the USA.

PY - 2010/4

Y1 - 2010/4

N2 - Cu-Cr-N coatings with Cu contents between 3 and 65 at.%, Cu/Cr ratios in the 0.04-4.5 range and 21-27 at.% N, synthesized by twin electron-beam Physical Vapor Deposition at 450 °C, were investigated and compared against substoichiometric Cr-N reference samples. The main objective of this study is to study the influence of Cu on the structure, and the subsequent effects on the mechanical properties, room (22 °C) and high temperature (500 and 840 °C) tribological performance of Cu-Cr-N coatings. Using X-ray photoelectron spectroscopy, glancing angle X-ray diffraction and scanning electron microscopy, in combination with nanoindentation mechanical property measurements and laboratory-controlled ball-on-disc sliding experiments, it is shown that Cu-Cr-N coatings with low Cu content (3 at.%) possess sufficient wear resistance for high-temperature demanding tribological applications. The lubricious effect of oxide formation at high temperatures is also evaluated.

AB - Cu-Cr-N coatings with Cu contents between 3 and 65 at.%, Cu/Cr ratios in the 0.04-4.5 range and 21-27 at.% N, synthesized by twin electron-beam Physical Vapor Deposition at 450 °C, were investigated and compared against substoichiometric Cr-N reference samples. The main objective of this study is to study the influence of Cu on the structure, and the subsequent effects on the mechanical properties, room (22 °C) and high temperature (500 and 840 °C) tribological performance of Cu-Cr-N coatings. Using X-ray photoelectron spectroscopy, glancing angle X-ray diffraction and scanning electron microscopy, in combination with nanoindentation mechanical property measurements and laboratory-controlled ball-on-disc sliding experiments, it is shown that Cu-Cr-N coatings with low Cu content (3 at.%) possess sufficient wear resistance for high-temperature demanding tribological applications. The lubricious effect of oxide formation at high temperatures is also evaluated.

KW - Coatings

KW - Hardness

KW - High temperature tribology

KW - Oxides

KW - XPS

KW - XRD

UR - https://www.scopus.com/pages/publications/77952672319

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DO - 10.1007/s11249-009-9572-x

M3 - Article

AN - SCOPUS:77952672319

SN - 1023-8883

VL - 38

SP - 57

EP - 68

JO - Tribology Letters

JF - Tribology Letters

IS - 1

ER -

Effect of Cu content on the structure, and performance of substoichiometric Cr-N coatings

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Keywords

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