PREPARATION, MICROSTRUCTURE AND PERFORMANCE OF NANOSCALE CERAMICS REINFORCED HARD COMPOSITE COATING

Peng Li ()
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Peng Li: Mechanical and Electronic Engineering Department, Shandong Agriculture and Engineering University, Shandong 250100, P. R. China

Surface Review and Letters (SRL), 2014, vol. 21, issue 01, 1-6

Abstract: This paper is based on the dry sliding wear of StelliteSF12-B4C-TiN-Mocomposite coating deposited on a pureTiusing a laser cladding technique, the parameters of which provide almost crack-free composites with low porosity. To the best of our knowledge, it is the first time that StelliteSF12-B4C-TiN-Momixed powders are deposited as the hard composites by a laser cladding technique. Scanning electron microscope images indicate that the nanoscale particles are produced in such coating. The fact that due to the sufficiently rapid heating and cooling rates of the laser cladding technique, the ceramics, such asTiCorTiB2did not have enough time to grow up, resulting in the formation of the nanoscale particles. Compared with a pureTisubstrate, the increments of the micro-hardness and wear resistance are obtained for such composite coating.

Keywords: Surface; composites; coatings; lasers (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1142/S0218625X14500048

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