Mechanical properties, sliding wear and solid particle erosion behaviors of plasma enhanced magnetron sputtering CrSiCN coating systems

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DOIResolve DOI: http://doi.org/10.1016/j.wear.2014.11.008
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TypeArticle
Journal titleWear
ISSN0043-1648
Volume324-325
Pages2735; # of pages: 9
SubjectAmorphous films; Elastic moduli; Erosion; Fracture mechanics; Fracture toughness; Physical vapor deposition; Plastic coatings; Plastic deformation; Wear of materials; Coatings; Mechanical properties; Indentation fracture toughness; Inverse relationship; Pin-on-disk wear test; Plasma enhanced magnetron sputtering; Sliding wear behaviors; Solid particle erosion; Specific wear rates; Tribological behaviors; Fracture
AbstractCrSiCN coating systems with different concentrations of Cr, Si, C, and N were investigated for their microstructure, mechanical properties (hardness H, elastic modulus E and indentation fracture toughness KIC) and tribological behaviors using SEM, nano-indentation, indentation, pin-on-disk wear test, and sand particle erosion test. The wear behaviors, such as specific wear rate and Archard wear coefficient, showed inverse relationships with H3/E2 ratio, confirming that the resistance to plastic deformation is the essential factor governing sliding wear behavior. High H3/E2 ratios also contributed to increased resistances to erosion at low impingement angles. However, at higher impingement angles (>60°), coatings with lower index of brittleness (B=2.656μm-1/2), higher critical load (P*=6.670N) for crack initiation and fracture surface energy (γf=0.123Jm-2) offered a higher erosion resistance. The indentation fracture toughness (KIC), hardness (H) and elastic modulus (E) are limited to interpret erosion behaviors in a comprehensive approach, suggesting that erosion is a complex process where multiple mechanical properties contribute to erosion performance.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21275705
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Record identifierf4bb4ce8-13de-4402-a48b-fef16814a15a
Record created2015-07-14
Record modified2016-05-09
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