Results 261 to 270 of about 22,058 (305)

Deformation Microstructure of Cold Gas Sprayed Coatings

MRS Proceedings, 2001
ABSTRACTCold Gas Spraying is a new coating technique, in which the formation of dense, tightly bonded coatings occurs only due to the kinetic energy of high velocity particles of the spray powder. These particles are still in the solid state as they impinge on the substrate.
C. Borchers, T. Stoltenhoff, F. Gäartner, H. Kreye, H. Assadi   +4 more
openaire   +1 more source

Chemical Interaction and Bonding in Cold Gas Spraying

International Thermal Spray Conference, 2011
Abstract The effect of chemical interaction compared to mechanical influences on the bonding mechanism in cold-gas spraying is a matter of great interest. In this study, combinations of different metals (Al, Cu, steel) sprayed onto galvanized surfaces (Cr, Ni) will be used for a first approach to gain information about substrate-particle
K.-R. Donner, R. Roedel, F. Gärtner, T. Klassen   +3 more
openaire   +1 more source

Investigation of gas flow through a mask at cold spraying

AIP Conference Proceedings, 2020
The article presents an investigation of gas flow that occurs under typical for cold spraying conditions when supersonic gas jet, that exhausts from De Laval nozzle, and impinges on mask with a round perforation, behind that substrate is placed. Numerical simulation was made using software ANSYS Fluent. Shadowgraph was used to obtain images of gas flow.
V. F. Kosarev, S. V. Klinkov, B. M. Melamed, G. V. Trubacheev, S. Yu. Usynin, V. S. Shikalov   +5 more
openaire   +1 more source

Tribological Properties of Cold Gas Spraying FeMnCrSi Alloy

International Thermal Spray Conference, 2021
Abstract FeMnCrSi and 316L alloy coatings were deposited on carbon steel substrates via high-pressure cold gas spraying and their microstructure, hardness, and wear resistance were obtained. Ball-on-disk testing (ASTM G99) was used to measure sliding wear behaviors.
Rodolpho F. Vaz, Sergi Dosta, Irene G. Cano, Anderson G.M. Pukasiewicz   +3 more
openaire   +1 more source

Influence of spraying parameters on cold gas spraying of iron aluminide intermetallics

Surface and Coatings Technology, 2015
Abstract Cold spraying was used to build up coatings of ordered Fe40Al intermetallics, which are a kind of alloys which are being proposed for high temperature applications. The spray experiments were performed with chemically ordered powder feedstock of different size distributions to study influences from impact velocities.
N. Cinca, A. List, F. Gärtner, J.M. Guilemany, T. Klassen   +4 more
openaire   +1 more source

HVOF K2 vs. Cold Gas Spraying

International Thermal Spray Conference, 2011
Abstract A conventional GTV K2 kerosene fuel HVOF spraying system has been modified with the aim to achieve process conditions comparable to cold gas spraying concerning the average particle velocities and surface temperatures in the spray distance.
A. Wank, A. Schwenk
openaire   +1 more source

Particle-Substrate Interactions in Cold Gas Dynamic Spraying

International Thermal Spray Conference, 2003
Abstract Aluminium powder of 99.7wt% purity and in the nominal particle size range –75+15µm has been sprayed onto a range of substrates by cold gas dynamic spraying (cold spraying). The substrates examined include metals with a range of hardness, polymers and ceramics.
D. Zhang, P.H. Shipway, D.G. McCartney
openaire   +1 more source

Cold gas spraying of semiconductor coatings for the photooxidation of water

SPIE Proceedings, 2013
This contribution shows the potential of cold gas spraying for the production of photoelectrodes employing photoelectrocatalysts for the water oxidation reaction. Conventional methods of coating usually employ sol-gel methods and calcination to obtain a good binding of the coating to the substrate.
T. Emmler, H. Gutzmann, P. Hillebrand, M. Schieda, R. Just, F. Gärtner, P. Bogdanoff, I. Herrmann-Geppert, T. Klassen   +8 more
openaire   +1 more source

Numerical Simulation of the Cold Gas Dynamic Spray Process

Journal of Thermal Spray Technology, 2006
Abstract A computational fluid dynamic (CFD) model of the cold gas dynamic spray process is presented. The gas dynamic flow field and particle trajectories within an oval shaped supersonic nozzle as well as in the immediate surroundings of the nozzle exit, before and after the impact with the target plane, are simulated. Predicted nozzle
M. Karimi, A. Fartaj, G.W. Rankin, D. Vanderzwet, J. Villafuerte, W. Birtch   +5 more
openaire   +1 more source

Computational Simulation for Gas Heater of Cold Spray System

International Thermal Spray Conference, 2013
Abstract This paper demonstrates the use of commercial simulation software to evaluate a new heater design for cold gas spraying. The gas heater consists of a heating unit and a self-cooling housing. The heating unit is a coiled tube encased in an insulating enclosure.
Huang Guosheng, Gu Daming, Li Xiangbo, Xing Lukuo   +3 more
openaire   +1 more source