Results 151 to 160 of about 63,965 (188)

Developments of fabricating nanostructure coatings by cold gas dynamic spraying

2008 2nd IEEE International Nanoelectronics Conference, 2008
Cold gas dynamic spraying (CGDS) is one kind of novel surface engineering technologies, depositing diversified metal, alloy and composite coatings by high-speed gas current under room temperature or with a little heated. Due to its peculiar characteristics such as low spraying temperature, nonoxidation, low stress among coating layers, compactification,
Le-ding Guam, Biao Yan, Ling Long, Sha Yang   +3 more
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Cold Gas Dynamic Spray – Characterization of Polymeric Deposition

2016
When a solid, ductile particle impacts a substrate at sufficient velocity, the resulting heat, pressure, and plastic deformation can produce bonding at the interface. The use of a supersonic gas flow to accelerate such particles is known as Cold Spray deposition.
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Cold gas dynamic spraying of a high temperature Al alloy

Surface and Coatings Technology, 2006
Abstract The present paper describes a study of the influence of cold spraying on the microstructure, heat treatment response and mechanical behavior of a high temperature 2618 aluminum alloy (Al–Cu–Mg–Fe–Ni) modified with 0.16 wt.% Sc. The microstructure of the starting powder consisted of a network of Al 2 CuMg phase on the grain boundaries of the ...
L. Ajdelsztajn, A. Zúñiga, B. Jodoin, E.J. Lavernia   +3 more
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Potential of cold gas dynamic spray as additive manufacturing technology

The International Journal of Advanced Manufacturing Technology, 2013
In this paper, the application of cold spray (CS) coating deposition technology as additive manufacturing technique is discussed. Absence of material melting during CS deposition permits to obtain deposits with low value of residual stresses and to preserve the phase composition of source material which is a very important advantage. In this paper, the
A. Sova, S. Grigoriev, A. Okunkova, I. Smurov   +3 more
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Consolidation of Cermet Coatings by Cold Gas Dynamic Spraying

2017
Metal-ceramic (Cermets) materials that combine properties of both: high hardness, high wear resistance, and high working temperatures of ceramics and the ductility, toughness, and heat conductance of metals. Cold gas dynamic spraying, or simply cold spray, is a solid state thermal spray process that has been in development for the last 25 years. In the
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Characterization of Copper Layers Produced by Cold Gas-Dynamic Spraying

Journal of Thermal Spray Technology, 2000
The cold gas-dynamic spray method produces coatings or deposits by introducing solid feedstock particles into a supersonic gas stream developed through the use of a converging-diverging (de Laval) nozzle. The particles thus accelerated impact on a substrate surface and develop into a dense deposit through a process believed to be similar to cold ...
R.C. McCune, W.T. Donlon, O.O. Popoola, E.L. Cartwright   +3 more
openaire   +1 more source

Functional gradient coatings obtained by supersonic cold gas dynamic spraying

Voprosy Materialovedeniya, 2019
The paper studies the development of a technology for obtaining a wear-resistant functional gradient coating during supersonic cold gas dynamic spraying. The process goes due to the variation of the composition of the gas phase in a heterophase flow. The coating has a high microhardness (up to 12 GPa) on the peripheral layers and wear resistance is 3 ...
T. I. Bobkova, A. F. Vasiliev, I. S. Prudnikov, B. V. Farmakovsky   +3 more
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Fretting wear characteristics of cold gas-dynamic sprayed aluminum alloys

Tribology International, 2011
Process selection for repair of mechanical components due to wear and corrosion, e.g. damage of aluminum casting housings of fuel injection systems, is based on cost and response time factors, provided that the mechanical performance is maintained within acceptable limits. One of the promising and emerging repair technologies is Cold Gas-Dynamic Spray (
Attia, H., Meshreki, M., Korashy, A., Thomson, V., Chung, V.   +4 more
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WC-based cermet coatings produced by cold gas dynamic and pulsed gas dynamic spraying processes

Surface and Coatings Technology, 2007
Abstract Due to their mechanical properties, WC-based cermet coatings are extensively used in wear-resistant applications. These coatings are usually produced using thermal spray processes. However, due to the nature and the environment of these spraying processes, the feedstock powder structure and properties suffer from decomposition, which ...
M. Yandouzi, E. Sansoucy, L. Ajdelsztajn, B. Jodoin   +3 more
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How Cold is Cold Spray? An Experimental Study of the Heat Transfer to the Substrate in Cold Gas Dynamic Spraying

International Thermal Spray Conference, 2008
Abstract Time-resolved thermographic measurements were performed by a high speed infrared camera on a substrate surface during cold gas dynamic spraying without powder particles. Experiments were carried out on three commercial cold spray systems (Centerline SST, CGT Kinetiks 3000 and Inovati KM-CDS 2.2) spanning a wide range of gas ...
E. Irissou, J.-G. Legoux, C. Moreau, A.N. Ryabinin   +3 more
openaire   +1 more source