Solid-state manufacturing of tungsten deposits onto molybdenum substrates with supersonic laser deposition

Abstract

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, 724 MPa, is comparable to that of wrought tungsten with no evidence of melting or substrate grain growth. 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.