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Single-step graded surface coating using combined wire and powder feeding laser cladding

Syed, W. U. H. and Pinkerton, A. J. and Liu, Z. and Li, L. (2005) Single-step graded surface coating using combined wire and powder feeding laser cladding. In: Proceedings of the 24th International Congress on Applications of Lasers and Electro-optics (ICALEO). Laser Institute of America, pp. 787-795.

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Abstract

This paper reports a new surface coating technique that employs combined powder and wire feeding laser cladding in a single process to deposit dissimilar materials to form a graded coating. Using H13 tool steel as a substrate, copper powder and nickel wire as feeding stocks and a 1.5 kW Diode laser, the feasibility of the technique is demonstrated and the material distribution in the clad is investigated. Electron probe microanalysis (EPMA), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and optical microscopy were used to analyse the deposited clad in terms of elemental composition, microstructure and flow characteristics in the melt pool. It was found that by varying the feed rates of copper powder and nickel wire, varying degrees of graded material could be obtained in a single step.

Item Type: Contribution in Book/Report/Proceedings
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 59686
Deposited By: ep_importer_pure
Deposited On: 14 Nov 2012 09:48
Refereed?: No
Published?: Published
Last Modified: 10 Apr 2014 01:44
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/59686

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