Title: Wear study of coatings obtained using different parameters of thermal spraying

Authors: Regita Bendikiene; Tilmute Pilkaite; Liudas Albinas Kuliavas

Addresses: Department of Production Engineering, Faculty of Mechanical Engineering and Design, Kaunas University of Technology, Studentu str. 56, LT-51424 Kaunas, Lithuania ' Department of Mechanical Engineering, Faculty of Mechanical Engineering and Design, Kaunas University of Technology, Studentu str. 56, LT-51424 Kaunas, Lithuania ' JSC 'ARV-Auto', A. Mickevi?iaus str. 52-18, LT-44244 Kaunas, Lithuania

Abstract: Feedstock material behaviour in thermal spraying process under different parameters is essential in producing repeatable and controllable coatings. Article reviews three regimes of spraying, with a focus on the wear behaviour under the different conditions. RocDur 37 was selected as feedstock material. Regimes applying different feed were used: 1.43 cm/s (A), 1.85 cm/s (B), 0.88 cm/s (C); rotation speed - 1.33 s⁻¹. Wear was tested on the contactsliding, edge-wear and abrasive-wear machines. Regimes B and C showed lower wear in contact-sliding and edge-wear. Hydro-abrasive test showed similar wear of coatings obtained using all parameters, it can be concluded that RocDur 37 coatings are suitable for work in abrasive conditions. In this type of wear technological parameters do not affect wear. The optimum technological regimes: rotation speed 1.33 s⁻¹, longitudinal feed 0.88 cm/s, and 11 passes.

Keywords: thermal spraying; coating; wear resistance; flexi cord; feedstock; wear test; contact sliding wear; edge wear; abrasive wear; deposition.

DOI: 10.1504/IJSURFSE.2017.085625

International Journal of Surface Science and Engineering, 2017 Vol.11 No.3, pp.262 - 272

Received: 01 Aug 2016
Accepted: 10 Sep 2016
Published online: 03 Aug 2017 *

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