Influence of helium and nitrogen gases on the properties of cold gas dynamic sprayed pure titanium coatings

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Proceedings titleInternational Thermal Spray Conference and Exposition 2010, Thermal Spray: Global Solutions for Future Application (DVS-ASM)
ConferenceInternational Thermal Spray Conference and Exposition, May 3-5, 2010, Singapore
Pages8489; # of pages: 6
AbstractThis study investigated the effect of the type of gas used, nitrogen and helium, during cold spraying of titanium coatings. In all conditions, the propelling gases’ temperature and pressure were attuned to attain three similar particle velocities for each gas. Coatings were characterized by SEM and XPS. Deposition efficiency, coating microhardness, and porosity were evaluated for all conditions. Results show that for the same particle impact velocity, the deposition efficiency and coating density were mostly the function of the surface temperature, which in turn was influenced by spray parameters. It is shown that loosely-bonded particles at the surface can be detached by the passage of high pressure supersonic gas stream. In addition, a thick and fully dense cold sprayed titanium coating was achieved with optimized spray parameters with He and the corresponding average particle velocity was measured at 1173 m/s.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Peer reviewedYes
NRC number53826
NPARC number16169245
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Record identifierbb042752-2681-4178-b6b1-941381b77e8a
Record created2010-10-05
Record modified2016-05-09
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