Diode laser cladding of Co-based composite coatings reinforced by spherical WC particles

Damian Janicki; Jacek Górka; Artur Czupryński; Waldemar Kwaśny; Marcin Żuk

doi:10.1117/12.2261675

8 December 2016 Diode laser cladding of Co-based composite coatings reinforced by spherical WC particles

Damian Janicki, Jacek Górka, Artur Czupryński, Waldemar Kwaśny, Marcin Żuk

Proceedings Volume 10159, Laser Technology 2016: Progress and Applications of Lasers; 101590N (2016) https://doi.org/10.1117/12.2261675
Event: XIth Symposium on Laser Technology, 2016, Jastarnia, Poland

Abstract

A laser cladding system consisting of a direct diode laser with the flat-top beam profile and an off-axis powder injection nozzle has been used to fabricate Co-based (Satellite 6) metal matrix composite coatings reinforced by spherical-shaped WC particles. Non-porous coatings with the WC fraction of about 50 vol.% and a low dissolution of the WC particles in the matrix have been obtained. The heat input level affects the degree of WC dissolution and the matrix mean free path between the embedded WC particles. Comparative erosion tests between the metallic Satellite 6 and composite Satellite 6/WC coatings showed that the composite coatings exhibit a superior erosion resistance only at the oblique impingement condition. Generally, a low erosion resistance of the composite coatings at the normal impingement is mainly attributed to a very smooth interface between the spherical-shaped WC particles and the matrix alloy.

Citation Download Citation

Damian Janicki, Jacek Górka, Artur Czupryński, Waldemar Kwaśny, and Marcin Żuk "Diode laser cladding of Co-based composite coatings reinforced by spherical WC particles", Proc. SPIE 10159, Laser Technology 2016: Progress and Applications of Lasers, 101590N (8 December 2016); https://doi.org/10.1117/12.2261675

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