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Effect of Zr content on friction and wear behavior of Cr‐Zr‐N coating system
Author(s) -
Fellah Mamoun,
Aissani Linda,
Abdul Samad Mohammed,
Purnama Agung,
Djebaili Hamid,
Montagne Alex,
Iost Alain,
Nouveau Corinne
Publication year - 2017
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12833
Subject(s) - materials science , tribometer , tribology , crystallite , friction coefficient , metallurgy , sputter deposition , grain size , surface roughness , coating , wear resistance , composite material , content (measure theory) , sputtering , thin film , nanotechnology , mathematical analysis , mathematics
Nanostructured Cr‐Zr‐N thin film with different Zr content (0 to 48.8 at.%) was deposited, using an RF magnetron‐sputtering technique. The structural evolution and morphological changes were performed. The tribological performances were evaluated, using a ball‐on‐disk type Oscillating tribometer. The tests were carried out under normal loads of 2, 4 and 6 N, respectively, with an alumina ball (Al 2 O 3 ) as a counter face. The results showed that the crystallite size of the Cr‐Zr‐N system was reduced to 10.8 nm at 31.8 at.% Zr content. Morphological studies of the films showed that the roughness continuously decreased with increasing Zr content, exhibiting a value of 11.2 nm at 31.8 at.% Zr. The wear rate tends to decrease with the increasing of Zr content to reach a lowest value of 1.95 × 10‐2 μm3.N.μm‐1 at 31.8 at.% Zr. The wear rate and friction coefficient were lower in the samples with 31.8 at.% Zr content. The improved friction and wear resistance were attributed to the grain refinement strengthening mechanism at 31.8 at.% of Zr.