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Interfacial bond mechanism in cold gas dynamic sprayed coatings
2022This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
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Effect of gas pressure on Al coatings by cold gas dynamic spray
Materials Letters, 2008Al coatings by cold gas dynamic spray (CGDS, or Cold Spray) technique with pressure condition were investigated. The relatively soft Al has been coated at low gas pressure condition (0.7 MPa) with severe plastic deformation. However, the Al particles in the coatings coated at the higher pressure conditions (1.5 MPa, 2.5 MPa) were not severely deformed.
H. Lee, H. Shin, S. Lee, K. Ko
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Control of spray spot in cold spray technology. Part 1. Gas dynamic aspects
Thermophysics and Aeromechanics, 2014This paper presents a study of supersonic jets formed by approaches that are new for cold spray technique: the main flow is swirled, the nozzles with permeable profiles and with exit slots on the supersonic section are engineered. The flow swirling achieved in the nozzle prechamber retains downstream to substrate surface. The system of vortices created
V. N. Zaikovskii +4 more
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Dense Particulate Flow in a Cold Gas Dynamic Spray System
Volume 1: Symposia, Parts A and B, 2007The effect of particle-gas and particle-particle interactions in a cold spray process is studied when the particle loading is high. To examine the effect of the presence of a dense particulate flow on the supersonic gas, an Eulerian-Eulerian approach is used.
B. Samareh, A. Dolatabadi
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Cold Gas Dynamic Spraying of Fe-based Amorphous Alloy
International Thermal Spray Conference, 2006Abstract This paper describes recent effort to synthesize Fe-based amorphous alloys coatings using Cold Gas Dynamic Spraying. Characterization of the gas atomized Fe-based (Fe-Cr-Mo-WC-Mn-Si-Zr-B) powder shows that fully amorphous powder is found when particle diameter is below 20 µm.
L. Ajdelsztajn +4 more
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Examination on Substrate Preheating Process in Cold Gas Dynamic Spraying
Journal of Thermal Spray Technology, 2011Substrate preheating always takes an important role in particle bonding and formation of the first layer coating in cold gas dynamic spraying (CGDS). In this study, a systemic investigation on substrate preheating process is conducted with Cu, Al, Steel, and Ti substrate by both numerical and experimental methods.
Shuo Yin +3 more
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Characterisation of Corrosion Resistant Deposits by Cold Gas Dynamic Spray
International Thermal Spray Conference, 2010Abstract Despite much research effort and many application development studies, corrosion resistant alloy (CRA) coatings, prepared by thermal spraying still provide greatly inferior corrosion resistance when compared to parent material of the same composition, due to a network of oxides and pores in the coatings.
T. Marrocco, D. Harvey, T. Hussain
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Optimization of Cold Gas Dynamic Spray Processes by Computational Simulation
Volume 1: Symposia, Parts A and B, 2007An integrated model of compressible thermofluid, splat formation and coating formation for a cold dynamic spray process has been established. In-flight behavior of nano-micro particles and the interaction between the shock wave and the particles in a supersonic jet flow impinging onto the substrate and further particle acceleration with electrostatic ...
Hidemasa Takana +3 more
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Deposition of brass coating by a method of cold gas-dynamic spraying
Physics and Chemistry of Materials Treatment, 2020The structure and properties of a coating based on a mechanical mixture of Cu and Zn particles deposited on a steel substrate by gas-dynamic spraying are studied. X-ray diffraction and microspectral analysis show a significant effect of the deposition temperature on the content of Cu and Zn in the coating. When the deposition temperature increases from
V. E. Arkhipov +3 more
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Cold gas dynamic spraying of WC–Ni cemented carbide coatings
International Journal of Refractory Metals and Hard Materials, 2015Abstract The feasibility of using a low pressure cold spray system for the deposition of WC–Ni coatings was studied. The Ni content was varied from 4 to 50 wt.% and the resultant coating properties were compared to WC–12Co–xNi powders, deposited using the same Ni contents.
D. Lioma, N. Sacks, I. Botef
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