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  Estonian Journal of Engineering

ISSN 1736-7522 (electronic)  ISSN 1736-6038  (print)

 An international scientific journal
Formerly: Proceedings of the Estonian Academy of Sciences Engineering
(ISSN 1406-0175)
Published since 1995

Estonian Journal of Engineering

ISSN 1736-7522 (electronic)  ISSN 1736-6038  (print)

 An international scientific journal
Formerly: Proceedings of the Estonian Academy of Sciences Engineering
(ISSN 1406-0175)
Published since 1995

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Wear resistance of laser remelted thermally sprayed coatings; pp. 318–328

(Full article in PDF format) doi: 10.3176/eng.2009.4.09


Authors

Andrei Surzhenkov, Priit Kulu, Riho Tarbe, Valdek Mikli, Heikki Sarjas, Jyrki Latokartano

Abstract

Advantages of hard coatings and deposition technologies such as HVOF have opened new opportunities for the production of wear parts operating in an abrasive environment. Thermally sprayed hardmetal coatings are widespread in industrial applications for wear, but not usable under impact wear conditions. To widen the scope of thick hard coating applications, powder coatings, produced by plasma spraying and powder spray-fused coatings using laser remelting, were studied. Nickel- and iron-based self-fluxing alloy powders and WC-Co hardmetal powders were used as spray materials. The microstructure of coatings and the influence of heat treatment on the structure and composition of coatings as well as on the composition of the substrate were studied. The duplex-treated surfaces were tested under the conditions of abrasion and abrasive erosion and impact wear and the mechanisms of coating degradation were analysed. Prospects of coatings, containing thermal spray-fused iron-based metal-matrix WC-Co hardmetal for erosive wear conditions, are demonstrated. Based on the comparative studies of abrasive, erosive and impact wear resistance, recommendations for materials and coatings are formulated.

Keywords

powder coatings, thermal spray, laser remelting, abrasion, erosion, abrasive impact wear.

References

  1. Davis , J. R. (ed.). Surface Engineering for Corrosion and Wear Resistance. ASM International , 2001.

  2. Bayer , R. G. Wear Analysis for Engineers. HNB , New York , 2002.

  3. Karnerva , U. , Lagerbom , J. and Vuoristo , P. Development of thermal spray powders for improved tribological and corrosive applications and cost-effective solutions. Int. J. Mater. Product. Technol. , 2007 , 28 , 377–398.
doi:10.1504/IJMPT.2007.013086

  4. Kleis , I. and Kulu , P. Solid Particle Erosion. Occurrence , Prediction and Control. Springer-Verlag , London , 2008.

  5. Kivikytö-Reponen , P. Correlation of Material Characteristics and Wear of Powder Metallurgical Metal Matrix Composites. PhD Thesis , Helsinki University of Technology , 2006.

  6. Kulu , P. , Veinthal , R. , Saarna , M. and Tarbe , R. Surface fatigue processes at impact wear of powder materials. Wear , 2007 , 263 , 463–471.
doi:10.1016/j.wear.2006.11.033

  7. Tarbe , R. Abrasive Impact Wear: Tester , Wear and Grindability Studies. PhD Thesis , Tallinn , TUT Press , 2009.

  8. Veinthal , R. , Tarbe , R. , Kulu , P. and Käerdi , H. Abrasive erosive wear of powder steels and cermets. Forthcoming.

  9. Tümanok , A. , Kulu , P. , Mikli , V. and Käerdi , H. Technology and equipment for production of hardmetal powders from used hardmetal. In Proc. 2nd International DAAAM Conference. Tallinn , 2000 , 197–200.

10. Kulu , P. , Käerdi , H. and Mikli , V. Retreatment of used hardmetals. In Proc. TMS 2002 Recycling and Waste Treatment in Mineral and Metal Processing: Technical and Economic Aspects. Lulea , 2002 , vol. 1 , 139–146.

11. Zimakov , S. , Pihl , T. , Kulu , P. , Antonov , M. and Mikli , V. Applications of recycled hardmetal powder. Proc. Estonian Acad. Sci. Eng. , 2003 , 9 , 304–316.

12. Kulu , P. and Zimakov , S. Wear resistance of thermal sprayed coatings on the base of recycled hardmetal. Surface Coat. Technol. , 2000 , 130 , 46–51.
doi:10.1016/S0257-8972(00)00687-3

 
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Current Issue: Vol. 19, Issue 4, 2013





Publishing schedule:
No. 1: 20 March
No. 2: 20 June
No. 3: 20 September
No. 4: 20 December