Paper Title:
Failure Mechanisms of Thin Hard Coatings Submitted to Repeated Impacts: Influence of the Film Thickness
  Abstract

Thin films produced by sputtering methods are used in many practical applications. This work aims at studying the failure mechanisms of thin hard coatings submitted to repeated impact conditions, with a special focus on the influence of the film thickness. Impact tests were carried out using a cyclic loading system developed in our laboratory. Steel balls (100Cr6) were used as impacting bodies. After tests, samples were observed by optical and scanning electron microscopy in order to investigate coating failure. The experimental work has permitted to identify blistering phenomena that has been related to the film mechanical properties and residual stress level. The influence of the film thickness is discussed and measurements of the residual stress in the buckled coatings have been performed using Raman spectroscopy to check the validity of our mechanical approach.

  Info
Periodical
Edited by
Moussa Karama
Pages
73-82
DOI
10.4028/www.scientific.net/AMR.112.73
Citation
S. lamri, C. Langlade, G. Kermouche, "Failure Mechanisms of Thin Hard Coatings Submitted to Repeated Impacts: Influence of the Film Thickness", Advanced Materials Research, Vol. 112, pp. 73-82, 2010
Online since
May 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Li Gou, Ji Lei Zhu, Jun Guo Ran, Suang Feng Yan
Abstract:In order to improve the adhesion between diamond coatings and cemented tungsten carbide (WC-Co) substrates, the diamond coatings were...
1889
Authors: Damiano Galvan, Y.T. Pei, Jeff T.M. de Hosson, Albano Cavaleiro
Abstract:A commercial RF-sputtering deposition rig was employed to deposit H-free diamond-like carbon (DLC) coatings. The influence of alloying...
1026
Authors: Nurot Panich, Surasak Surinphong, D.A. Karpov, Yong Kwang Tan, Chin Foo Goh, Jan Ma
Abstract:The aim of this work is to fabricate and develop the innovative ceramic coatings for protection applications with both high hardness and...
81
Authors: Hsi Hsin Chien, Kung Jeng Ma, Chien Hung Kuo
Chapter 3: Mechanical Engineering and Manufacturing
Abstract:Glass molding process provides a great potential for the production of precise glass optical components at low cost. The platinum-iridium...
533
Authors: Lin Yung Tseng, Jhewn Kuang Chen, Kai Hung Hsu, Wan Yu Wu, Chi Lung Chang
Chapter 2: Material Processing Technology, Technologies of Application of Materials
Abstract:Nanocomposite Cr-W-B-N coatings with various tungsten contents were synthesized on silicon wafer substrates. The used technique is a DC...
430