Influence of Si contents on tribological characteristics of CrAlSiN nanocomposite coatings

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

22 Scopus Citations
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Author(s)

  • Chun-Chi Chang
  • Hsien-Wei Chen
  • Jyh-Wei Lee
  • Jenq-Gong Duh

Detail(s)

Original languageEnglish
Pages (from-to)46-51
Journal / PublicationThin Solid Films
Volume584
Online published27 Feb 2015
Publication statusPublished - 1 Jun 2015
Externally publishedYes

Abstract

The CrAlSiN coatings with Si contents from 0 at.% to 13.0 at.% were deposited on AISI 304 stainless steels and tungsten carbide by RF magnetron sputtering. In the ball-on-disc wear tests, the improved friction coefficient of (Cr0.5Al0.5)1 -xSixN coatings with increasing Si content was revealed. The hardness (H) and the reduced elastic modulus (E) of (Cr0.5Al0.5)1 -xSixN coatings were acquired by a nanoindentation. The H3/E2 ratio of (Cr0.5Al0.5)1 -xSixN coatings was found be proportional to the abrasion resistance of coatings, and therefore the (Cr0.5Al0.5)1 -xSixN coating with maximum H3/E2 ratio as high as 0.475 by adding 9.0 at.% Si exhibited superior resistance to plastic deformation and wear. In addition, it was revealed that the columnar grains of the CrAlN coatings were switched to refined and equi-axial ones after Si addition. From the observation of crack propagation, it was evidenced that the equi-axial grains with sophisticated boundary of (Cr0.5Al0.5)1 -xSixN coating prevents the direct penetration of the cracks. On the basis of these improved tribological behaviors, the superior durability of (Cr0.5Al0.5)1 -xSixN coating is thus demonstrated.

Research Area(s)

  • Chromium aluminum silicon nitride, Crack propagation, Nanocomposite, Plastic deformation resistance, Tribological properties

Citation Format(s)

Influence of Si contents on tribological characteristics of CrAlSiN nanocomposite coatings. / Chang, Chun-Chi; Chen, Hsien-Wei; Lee, Jyh-Wei; Duh, Jenq-Gong.

In: Thin Solid Films, Vol. 584, 01.06.2015, p. 46-51.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal