Tribological behaviours of titanium nitride and chromium nitride based PVD coating systems

DOIResolve DOI: http://doi.org/10.1115/GT2012-68107
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TypeArticle
Proceedings titleProceedings of the ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. Volume 5: Manufacturing Materials and Metallurgy; Marine; Microturbines and Small Turbomachinery; Supercritical CO2 Power Cycles
ConferenceASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012, June 11-15, 2012, Copenhagen, Denmark
ISBN9780791844717
Pages4149; # of pages: 9
SubjectCoating compositions; Coefficient of frictions; CrN-based coatings; Erosion resistance; Plasma enhanced magnetron sputtering; Specific wear rates; Tribological behaviour; Tribological properties; Amorphous films; Elastic moduli; Exhibitions; Friction; Gas turbines; Hardness; Microstructure; Protective coatings; Titanium nitride; Tribology; Erosion
AbstractThis study investigates the effects of the deposition process and coating composition on microstructural and tribological properties of TiN and CrN based coating systems. Coatings were produced using various PVD based processes - electron beam (EB), cathodic arc (CA) and plasma enhanced magnetron sputtering (PEMS). All coated samples were evaluated for their composition, microstructure and surface morphology. Coating mechanical properties such as hardness, Young's modulus and coefficient of friction were also studied and related to their microstructures, wear and erosion resistances. It was found that hardness (H), Young's modulus (E) and coefficient of friction had impact on both wear and erosion rates. In particular, the H3/E2 ratio was inversely proportional to the specific wear rate. For erosion behaviour, higher H3/E2 ratios relate to lower erosion rates at low impingement angles; whereas higher H3/E2 ratios relate to higher erosion rates at high impingement angles.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21270315
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Record identifierc3defa80-d369-4dcf-9ba2-8d43f15c7bd0
Record created2014-01-24
Record modified2016-05-09
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