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Evaluation and Development of Economically Viable Coatings for Erosion Protection of Hydroturbines

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Abstract:

Hydrotubines do face regular exposure to cavitating environment, causing damage to guide vanes, impeller, nozzle, buckets and spear. Quite a large number of surface modification techniques have been employed to counter such a deleterious effect. Among these large numbers of techniques, thermal spray coatings has been mostly focused and studied. In the present work one such technique has been opted for study. Selection of coating technique and composition was made keeping their economical viability in mind. Hardness and toughness have been identified as significant factors effecting cavitation erosion of materials. In-depth analysis of erosion mechanism of coated and un-coated samples was undertaken using SEM/EDS, micro-hardness tester and XRD. Erosion mechanism of steel was mainly plastic deformation, whereas in case of coating, (i) lack of adhesion between splats (ii) lower toughness of alumina (iii) loosely bonded un-melted alumina particles, were dominant factor controlling the erosion mechanism of coating.

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Periodical:

Advanced Materials Research (Volume 585)

Pages:

590-594

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.585.590

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Online since:

November 2012

Authors:

Harpreet S. Grewal, Harpreet Singh, Anupam Agrawal, Harpreet S. Arora

Keywords:

Alumina, Cavitation Erosion, Hydroturbine, Thermal Sprayed Coating

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] B.S. Mann, V. Arya, Wear, 249 (2001) 354-360.

Google Scholar

[2] H.S. Grewal, S. Bhandari, H. Singh, Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, (2012) 1-15.

Google Scholar

[3] J.P. Franc, J.M. Michel, Fundamentals of cavitation, Kluwer Academic Publishers, 2004.

Google Scholar

[4] J.F. Santa, L.A. Espitia, J.A. Blanco, S.A. Romo, A. Toro, Wear, 267 (2009) 160-167.

DOI: 10.1016/j.wear.2009.01.018

Google Scholar

[5] F.T. Cheng, C.T. Kwok, H.C. Man, Surface and Coatings Technology, 139 (2001) 14-24.

Google Scholar

[6] K.Y. Chiu, F.T. Cheng, H.C. Man, Materials Science and Engineering: A, 392 (2005) 348-358.

Google Scholar

[7] C.J. Lin, J.L. He, Wear, 259 (2005) 154-159.

Google Scholar

[8] A. Kumar, J. Boy, R. Zatorski, L.D. Stephenson, Journal of Thermal Spray Technology, 14 (2005) 177-182.

Google Scholar

[9] K. Sugiyama, S. Nakahama, S. Hattori, K. Nakano, Wear, 258 (2005) 768-775.

Google Scholar

[10] J. Santa, J. Baena, A. Toro, Wear, 263 (2007) 258-264.

Google Scholar

[11] J. Berget, T. Rogne, E. Bardal, Surface and Coatings Technology, 201 (2007) 7619-7625.

DOI: 10.1016/j.surfcoat.2007.02.032

Google Scholar

[12] E. López Cantera, B.G. Mellor, Materials Letters, 37 (1998) 201-210.

Google Scholar

[13] J.K.N. Murthy, D.S. Rao, B. Venkataraman, Wear, 249 (2001) 592-600.

Google Scholar

[14] R. Asthana, S.T. Mileiko, N. Sobczak, Bulletin of the Polish Academy of Sciences, 54 (2006) 146-166.

Google Scholar

[15] H.X. Hu, S.L. Jiang, Y.S. Tao, T.Y. Xiong, Y.G. Zheng, Nuclear Engineering and Design, 241 (2011) 4929-4937.

Google Scholar

[16] W.-Y. Li, C. Zhang, H. Liao, J. Li, C. Coddet, Surface and Coatings Technology, 202 (2008) 4855-4860.

Google Scholar