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Supersonic Laser Deposition of Tungsten

[+] Author Affiliations
Marshall Jones

GE Global Research, Niskayuna, NY

Andrew Cockburn, Martin Sparkes, William O’Niell

University of Cambridge, Cambridge, UK

Rocco Lupoi

Trinity College Dublin, Dublin, Ireland

Paper No. MSEC2014-4187, pp. V001T03A022; 4 pages
  • ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference
  • Volume 1: Materials; Micro and Nano Technologies; Properties, Applications and Systems; Sustainable Manufacturing
  • Detroit, Michigan, USA, June 9–13, 2014
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-4580-6
  • Copyright © 2014 by ASME


Near fully dense tungsten coatings onto molybdenum substrates have been demonstrated using the Supersonic Laser Deposition (SLD) process. This is a characteristic that is not readily achievable with refractory materials. The tensile strength of the tungsten deposited coatings is similar to that of wrought tungsten, with no evidence of melting or substrate grain growth. The tungsten coating to a molybdenum substrate shows no evidence of melting or substrate grain growth. The SLD process is a novel deposition method that is based upon Cold Spay (CS) principles. In this technique the deposition velocities can be significantly lower than those required for effective bonding in CS processing. The addition of laser heating alters the mechanical properties of the materials at the deposition site. The results have shown that SLD is able to deposit tungsten with unique interface bonding and desirable properties as opposed to other deposition processes for refractory materials.

Copyright © 2014 by ASME
Topics: Tungsten



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