Effect of Vanadium and Niobium on Abrasive Behaviour of Arc Sprayed 4Cr13 Coatings

Abstract:

4Cr13 martensitic stainless steel coatings with different amount of V/Nb were prepared on the surface of the Q235 low-carbon steel by high velocity arc spraying (HVAS). The microstructure and properties of the coatings were characterized and tested by scanning electron microscope (SEM), X-ray diffraction (XRD), optical microscope, microhardness tester and wear tester. And the wear mechanisms of the coatings have been studied. The results showed that optimal percentage of V/Nb could improve performance of the coatings. The coatings had good forming properties, uniformity of microstructure and compact structure.The highest value of adhesion strength was up to about 36.80 Mpa. The hard particles could incease the hardness and wear resistanc of the coatings.The average microhardness was about 523 HV_0.1, higher than that of 4Cr13 coatings, and the abrasive wear resiatance was enhanced because of the added elements V and Nb. Key words: alloying coatings; 4Cr13; V/Nb; high velocity arc spraying (HVAS); abrasive behaviour

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 712-717
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.712
• Online since: September 2013
• Authors: Yu Deng, Sheng Fu Yu, Ning Yan, Shu Le Xing, Lin Bing Huang
• Keywords: 4Cr13, Abrasive Behaviour, Alloying Coatings, High Velocity Arc Spraying (HVAS), V/Nb

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