Evaluation of the Fatigue Resistance of Chromium Slurry Coating Steel Substrate Compounds by Means of an Improved Impact Testing Procedure

Abstract:

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Chromium coatings have been used for the protection of gas turbine blades in power plants during the last years due to their very good resistance against steam corrosion. Microhardness, scratch, adhesion and pin-on-disk sliding tests are commonly used for rapid evaluation of the mechanical properties of these coatings [1,2]. However, very limited information exists on their fatigue resistance. In this paper we present the experimental results of the impact testing examination of the above coatings. This experimental method is capable to assess the fatigue and the impact wear resistance of coatings working under cyclic impact loading conditions. From the experimental results it was concluded that the slurry Cr, Zr coatings deposited on P91 steel showed adequate fatigue strength for the above-mentioned kind of use.

Info:

Periodical:

Key Engineering Materials (Volumes 488-489)

Edited by:

Z. Tonković and M.H. Aliabadi

Pages:

420-423

DOI:

10.4028/www.scientific.net/KEM.488-489.420

Citation:

K.G. Anthymidis et al., "Evaluation of the Fatigue Resistance of Chromium Slurry Coating Steel Substrate Compounds by Means of an Improved Impact Testing Procedure", Key Engineering Materials, Vols. 488-489, pp. 420-423, 2012

Online since:

September 2011

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Price:

$35.00

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