Elimination of porosity in directly fabricated titanium via cold gas dynamic spraying

Zahiri, Saden H., Antonio, Christian I. and Jahedi, Mahnaz (2009) Elimination of porosity in directly fabricated titanium via cold gas dynamic spraying. Journal of Materials Processing Technology, 209 2: 922-929.


Author Zahiri, Saden H.
Antonio, Christian I.
Jahedi, Mahnaz
Title Elimination of porosity in directly fabricated titanium via cold gas dynamic spraying
Journal name Journal of Materials Processing Technology   Check publisher's open access policy
ISSN 0924-0136
1873-4774
Publication date 2009-01-19
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.jmatprotec.2008.03.005
Volume 209
Issue 2
Start page 922
End page 929
Total pages 8
Place of publication Lausanne, Switzerland
Publisher Elsevier S.A.
Language eng
Abstract Cold gas dynamic spray (cold spray) is a deposition technology in which particles achieve supersonic velocities. Commercial purity titanium (CP Ti) is directly fabricated to exploit the potential for cold spray to be utilised as a new fabrication technology. Deposition parameters for elimination of porosity were identified. Results show that using helium as the deposition gas has a significant influence on the elimination of pores. The volume fraction of porosity decreased with a decrease in the distance between the nozzle and the substrate. Furthermore, a decrease in average particle size led to a reduction in porosity of the deposited material. The results show that the directly fabricated CP Ti exhibits a higher hardness compared with wrought CP Ti. Optimisation of cold spray parameters led to a significant reduction of pores in directly fabricated parts.
Keyword Cold gas dynamic spray
Titanium
Porosity
Direct fabrication
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Available online 14 March 2008

Document type: Journal Article
Sub-type: Article (original research)
Collection: Julius Kruttschnitt Mineral Research Centre Publications
 
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Created: Mon, 15 Aug 2011, 14:55:26 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre