Results 141 to 150 of about 796 (182)

Dense titanium coatings by modified HVOF spraying

Surface and Coatings Technology, 2005
Abstract Titanium has an excellent corrosion property in chloride containing environments such as seawater. A modified HVOF spray process was developed by introducing a mixing chamber between the combustion chamber and the powder feed port.
J. Kawakita, T. Fukushima, S. Kuroda, H. Katanoda, K. Matsuo, H. Fukanuma   +5 more
openaire   +1 more source

Nanostructured Ceramic HVOF Coatings for Improved Protection

International Thermal Spray Conference, 2007
Abstract The potential of the high velocity oxy-fuel (HVOF) thermal spray process to produce coatings with reduced porosity is well known. The ability to produce high density ceramic coatings offers potential in high performance applications in the fields of wear, corrosion resistance and dielectric coatings.
Turunen, Erja, Kanerva, Ulla, Varis, Tommi, Knuuttila, J., Leivo, J., Silvonen, J.   +5 more
openaire   +2 more sources

The Preparation of Barium Hexaferrite Coatings Using HVOF

Journal of the American Ceramic Society, 2009
Thick coatings of barium hexaferrite with the compositions BaFe 12 O 19 and BaCoTiFe 10 O 19 were prepared using high‐velocity oxygen ...
D. Lisjak, D. Makovec, S. Gyrgyek, A. Hujanen, P. Lintunen, T. Varis, BOLELLI, Giovanni, LUSVARGHI, Luca, M. Drofenik   +8 more
openaire   +3 more sources

Residual stresses in HVOF-sprayed ceramic coatings

Surface and Coatings Technology, 2008
In this paper, the residual stress state of thermally sprayed ceramic coatings was examined by combining different experimental and analytical techniques, in order to provide a thorough characterisation of through-thickness stress profiles and a cross-verification of results. HVOF-sprayed ceramics, manufactured using commercial and nanostructured Al2O3
Bolelli, Giovanni, Lusvarghi, Luca, Varis, Tommi, Turunen, Erja, Leoni, Matteo, Scardi, Paolo, Azanza-Ricardo, Cristy Leanor, Barletta, Massimilano   +8 more
openaire   +5 more sources

Dielectric properties of HVOF sprayed ceramic coatings

2013 IEEE International Conference on Solid Dielectrics (ICSD), 2013
Thermally sprayed ceramic coatings can be used as electrical insulators for example in high temperature applications (e.g. fuel cells) or in other demanding conditions. In electrical insulation applications the mostly used coating materials are aluminum oxide, magnesium oxide and magnesium aluminate.
Niittymäki, Minna, Lahti, Kari, Suhonen, Tomi, Kanerva, Ulla, Metsäjoki, Jarkko   +5 more
openaire   +2 more sources

Manufacture of SiC Composite Coatings by HVOF

International Thermal Spray Conference, 2001
Abstract The main application of HVOF processes is the production of wear and/or corrosion protective coatings based on cermets (e.g. WC-Co). To reduce the weight of the sprayed volume, to increase the oxidation resistance and to reduce the costs of consumables SiC based cermets are of particular interest.
B. Wielage, J. Wilden, T. Schnick
openaire   +1 more source

Detrimental Effects of the HVOF Process on CoNiCrAlY

International Thermal Spray Conference, 2014
Abstract MCrAlY coatings deposited by LPPS or HVOF spraying are widely used on turbine blades and vanes to mitigate the effects of oxidation and corrosion. The service life of a MCrAlY layer is dependent on the loss of aluminum, which is consumed by oxidation on the surface and by diffusion into the substrate.
M. Thoma, A. Scrivani
openaire   +1 more source

Mechanical properties of HVOF coatings

Journal of Thermal Spray Technology, 1995
High-velocity oxygen fuel (HVOF) thermal-sprayed carbide coatings are distinguished by high hardness, low porosity, and good wear resistance compared to other thermal spray technologies. However, for many engineering applications the ductility and fatigue resistance are the most important material properties.
openaire   +1 more source

A pragmatic analysis and comparison of HVOF processes

Journal of Thermal Spray Technology, 1992
A number of high-velocity oxygen-fuel flame (HVOF) systems have evolved during the last 9 years. The most advanced is now challenging the coating qualities produced by the very successful detonation (D-Gun) process. The fundamentals of these various processes are described and compared.
M. L. Thorpe, H. J. Richter
openaire   +1 more source

Development and trends in HVOF spraying technology

Surface and Coatings Technology, 2006
Abstract Three actual trends in development of HVOF spraying technology are described and discussed. The trends concern application fields as well as gun and feedstock characteristics. At the example of demountable draw bars it is shown that HVOF sprayed cermet coatings are capable to protect light weight material components subject to dynamical load
Bernhard Wielage, Andreas Wank, Hanna Pokhmurska, Thomas Grund, Christian Rupprecht, Guido Reisel, Eduard Friesen   +6 more
openaire   +1 more source