Image icon  Cold Gas Dynamic Spray (CGDS): feedstock mixture of Al and Ti powders.

 
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Description: Cold gas dynamic spray, CGDS (or kinetic spray) is a rapidly developing coating and manufacturing technology in which metal particles are deposited at velocities of over 700 m/s without significant melting. The severe plastic deformation of the particles on impact produces a deposit that is very dense, with low oxide content and no thermally induced tensile stresses. This image is a SEM (secondary electron mode) micrograph of the mixture of spherical Al and Ti powders (55.2 at% Ti, 44.8 at% Al), produced by mixing the powders for 30 minutes in a Turbular mixer. The mixture is then deposited on bead blasted aluminium substrates using a CGDS system, build in the Institute for Manufacturing, Department of Engineering, University of Cambridge.
Keywords: cold spray • CGDS • cold gas spray • coating • aluminium • titanium • powder • micrsocopy • SEM • image
Categories: Materials > Metals & alloys > Aluminium & alloys
Materials > Metals & alloys > Titanium & alloys
Processes > Shaping > Spraying
Processes > Shaping > Powder methods
Processes > Surface treatments > Surface coatings
Processes > Thermal treatments > Sintering
Testing, analysis & experimentation > Microscopy
Created by: Dr. Tatiana Novoselova, The University of Liverpool
License: This resource is released under the Creative Commons Attribution license (3.0 Unported).
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Date created: 18 July 2005
Date added: 16 May 2011
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Resource ID: 3637