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Characterization of Cold Spray Titanium Deposits by X-Ray Microscopy and Microtomography

Published online by Cambridge University Press:  16 May 2008

Saden H. Zahiri ,
Sheridan C. Mayo,  and
Mahnaz Jahedi
Saden H. Zahiri
Affiliation:
CSIRO Materials Science and Engineering, Gate 5, Normanby Road, Clayton, Victoria 3168, Australia
Sheridan C. Mayo,*
Affiliation:
CSIRO Materials Science and Engineering, Gate 5, Normanby Road, Clayton, Victoria 3168, Australia
Mahnaz Jahedi
Affiliation:
CSIRO Materials Science and Engineering, Gate 5, Normanby Road, Clayton, Victoria 3168, Australia
*
Corresponding author. E-mail: [email protected]
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Abstract

Cold gas dynamic spray (cold spray) is a rapid deposition technology in which particles deposit at velocities above the speed of sound (∼340 ms−1). Generally, porosity forms in cold spray deposits due to insufficient deformation of particles. In this study, the unique capability of the X-ray microscopy and microtomography is utilized to visualize the internal structure of deposited material. The results show that this characterization technique successfully reveals porosities in the cold spray commercial purity (CP) titanium structure. Furthermore, microtomography images confirmed the experimental results for porosity measurements in which helium (compared with nitrogen) as carrier gas significantly decreases porosity in cold spray CP titanium.

Keywords

X-ray microscopymicrotomographycold spraySEM
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 14 , Issue 3 , June 2008 , pp. 260 - 266
Copyright
Copyright © Microscopy Society of America 2008

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