Journal Published Online: 31 July 2007
Volume 35, Issue 6

Determination of the Fatigue Resistance of HVOF Thermal Spray WC-CoCr Coatings by Means of Impact Testing



Impact testing is an efficient experimental procedure that enables the determination of the fatigue resistance of mono- and multi-layer coatings deposited on various substrates, which was not possible with the common testing methods previously available. In this paper an advanced impact tester, able to assess the fatigue failure resistance of coatings working under cyclic loading conditions, is presented. The fatigue failure of the tested coatings was determined by means of scanning electron, optical microscopy, and EDX analysis. The test results are recorded in diagrams containing the impact load versus the number of successive impacts that the examined coatings can withstand. From the experimental results it was concluded that a hard, wear resistant HVOF thermal spray WC-CoCr coating deposited on P91 steel substrate presents a high fatigue resistance.

Author Information

David, Constantine
Mechanical Engineering Department, Technical University of Serres, Serres, Greece
Anthymidis, Konstantinos
Applied Research Center, Serres, Greece
Agrianidis, Pavlos
Mechanical Engineering Department, Technical University of Serres, Serres, Greece
Tsipas, Dimitrios
Laboratory of Physical Metallurgy, Aristotle University, Thessaloniki, Greece
Pages: 4
Price: $25.00
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Stock #: JTE100922
ISSN: 0090-3973
DOI: 10.1520/JTE100922