Journal of Thermal Spray Technology

, Volume 22, Issue 2–3, pp 221–232 | Cite as

Multiple-Approach Evaluation of WSP Coatings Adhesion/Cohesion Strength

  • Radek Mušálek
  • Václav Pejchal
  • Monika Vilémová
  • Jiří Matějíček
Peer Reviewed

Abstract

Adhesion/cohesion testing represents one of the most common methods for benchmarking and optimization of thermal spray coatings. However, owing to the inhomogeneous coating microstructure, such testing may be quite troublesome. In this study, adhesion/cohesion strength of representative metallic and ceramic coatings deposited by water-stabilized plasma (WSP) spraying was evaluated by four different methods: tensile adhesion test, pin test, tubular coating tensile test, and shear test. Combination of various methods enabled the evaluation of the coating adhesion/cohesion strength under different loading conditions. Limitations and benefits of each method for testing of WSP coatings are demonstrated. Dominating failure micromechanisms were determined by supplementary fractographic analysis.

Keywords

adhesion testing adhesive strength alumina cohesion stainless steel water-stabilized plasma 

Notes

Acknowledgments

This study was supported by the Grant No. P108/12/P552 (Czech Science Foundation).

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Copyright information

© ASM International 2012

Authors and Affiliations

  • Radek Mušálek
    • 1
  • Václav Pejchal
    • 1
  • Monika Vilémová
    • 1
  • Jiří Matějíček
    • 1
  1. 1.Department of Materials EngineeringInstitute of Plasma Physics AS CR, v.v.iPraha 8Czech Republic

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