Results 151 to 160 of about 796 (182)

Nd:YOV4 laser polishing on WC-Co HVOF coating

AIP Conference Proceedings, 2017
WC/Co coatings are widely applied to different types of components due to their extraordinary performance properties including high hardness and wear properties. In industrial applications High Velocity Oxy-Fuel (HVOF) technique is extensively used to deposit hard metal coatings.
Giorleo, L., Ceretti, E., Montesano, L., La Vecchia, G. M.   +3 more
openaire   +2 more sources

Strength of HVOF coating–substrate interfaces

Thin Solid Films, 1998
Abstract A spherical indentation technique has been developed to determine the interfacial adhesion between thick film coatings and substrates. The threshold stress for interfacial delamination is found through a hybrid experimental–numerical approach.
C.M Nygårds, K.W White, K Ravi-Chandar
openaire   +1 more source

Heat transfer during HVOF deposition

Surface and Coatings Technology, 1998
Heat transfer processes during high velocity oxy-fuel (HVOF) deposition of WC coatings are studied. Experiments were conducted with temperature measurement in the substrate by thermocouples. A designed 2D computer simulation model of the spraying process with a moving torch is fitted to match the experimentally obtained temperature evolution.
Milan Honner, Petr Cervený, Václav Franta, František Cejka   +3 more
openaire   +1 more source

HVOF Combustion spraying of inconel powder

Journal of Thermal Spray Technology, 1993
A major trend in the thermal spray industry has been to increase the gas jet velocity to obtain better coating attributes. One emerging technology now used in industry is the high-velocity oxygen fuel process (HVOF). High-velocity spray guns combine oxygen and a fuel gas to generate heat and extremely high particle velocities.
D. J. Varacalle, M. G. Ortiz, C. S. Miller, T. J. Steeper, A. J. Rotolico, J. Nerz, W. L. Rlggs   +6 more
openaire   +1 more source

Tribocorrosion behaviour of HVOF cermet coatings

Corrosion Science, 2007
Abstract The main purpose of this work is to analyze the degradation mechanisms induced on industrial HVOF cermet coatings by tribocorrosion. Tribocorrosion of cermet coatings is a subject that has not been widely analyzed in research studies: in fact, while many works dealing with wear or corrosion of HVOF cermet coatings are published, studies ...
FEDRIZZI, Lorenzo, L. VALENTINELLI, S. ROSSI, S. SEGNA   +3 more
openaire   +3 more sources

Development of Nano‐reinforced HVOF Sprayed Ceramic Coatings

Advanced Engineering Materials, 2006
HVOF spraying has been demonstrated to produce dense ceramic coatings with improved density and mechanical properties compared to the conventional plasma sprayed ceramic coatings. Nanocrystalline, nanocomposite coatings have been found to offer improved mechanical properties compared to their conventional counterparts.
Keskinen, Jari, Heczko, O., Lintunen, Pertti, Gustafsson, Tom, Ge, Y., Arponen, M., Hannula, Simo-Pekka, Turunen, Erja   +8 more
openaire   +1 more source

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2010
A comparative analysis was performed for a cumulative-detonation device, which is applied for coating deposition, and HVOF devices of serial production. A peculiar feature of the cumulative-detonation device is an availability of two chambers, in which combustion mixtures are burning with 10 to 30 Hz frequency.
openaire   +1 more source

Development of Nanostructured Al2O3- Ni HVOF coatings

Key Engineering Materials, 2006
HVOF thermal spraying has been developed to deposit dense Al2O3-coatings for improved protective properties. As compared to generally used plasma sprayed coatings HVOF coatings can be prepared much denser and thus are better suited for applications where protective properties of the coating are needed.
Hannula, Simo-Pekka, Turunen, Erja, Keskinen, Jari, Varis, Tommi, Fält, Teppo, Gustafsson, Tom E., Nowak, Roman   +6 more
openaire   +2 more sources

Suspension and Solution Plasma or HVOF Spraying

Journal of Thermal Spray Technology, 2008
Nanostructured materials offer significant improvements in engineering properties because their grain sizes are smaller than those of conventionally processed materials by a factor of almost 2 orders of magnitude (Ref 1). Since the mid- 1990s, research has been conducted using thermal spray technology for the deposition of finely structured or ...
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HVOF-Sprayed Functionally Gradient Coating

International Thermal Spray Conference, 1999
Abstract Thermally sprayed alumina coatings are widely used to improve wear resistance and heat insulation of steel and other metals. Usually these coatings have been made by plasma or flame spraying. HVOF-sprayed alumina coatings are more wear resistant and better bonded to the base material than with plasma and flame spraying.
openaire   +1 more source