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HVOF Coating of Metallic Surfaces Using Different Powders: Fracture Toughness Measurement of Resulting Surfaces

Journal Advanced Materials Research (Volume 445)
Volume Materials and Manufacturing Technologies XIV
Edited by Faruk Yigit and Mohammed S. J. Hashmi
Pages 621-626
DOI 10.4028/www.scientific.net/AMR.445.621
Citation Y.A. Al-Shehri et al., 2012, Advanced Materials Research, 445, 621
Online since January, 2012
Authors Y.A. Al-Shehri, M.S.J. Hashmi, Bekir Sami Yilbas
Keywords Diamalloy 2002, Diamalloy 4010, Fracture Toughness, HVOF
Abstract

In the present study, two layer HVOF coatings of carbon steel is carried out. The microstructural changes in the coating layers and fracture toughness of the coated surface are examined. The micro indentation method is incorporated for the fracture toughness measurements, while optical and scanning electron microscopy are used for the microstructural analysis. It is found that the fracture toughness of the coating surface produced by the tungsten carbide blended powders is less than that of the coating produced by corrosion resistance powders. Key words: HVOF, Diamalloy 2002, Diamalloy 4010, Fracture toughness.

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