Results 181 to 190 of about 3,872 (220)

Evaluation on Through-Porosity of HVOF Sprayed Coatings

International Thermal Spray Conference, 2002
Abstract This study evaluates the through-porosity of HVOF-sprayed Hastelloy C coatings on carbon steel with respect to coating thickness and combustion pressure. The amount of through-porosity in the NiCrMo alloy layer is determined by chemical analysis, using ICP emission spectroscopy, and compared with electrochemical measurements ...
Jin Kawakita, Seiji Kuroda, Toshiaki Kodama   +2 more
openaire   +1 more source

Spall Resistant HVOF Coatings

International Thermal Spray Conference, 2015
Abstract The Under Secretary of Defense mandated all DoD facilities reduce or eliminate Hexavalent Chrome from all processing environments. The USAF Landing Gear Systems Engineering located at Hill AFB Utah is converting all line of sight EHC plating to High Velocity Oxygen Fuel (HVOF) applied tungsten carbide-cobalt (WC/Co) and/or ...
David Webb, Richard Vander Straten, Brad Martin, Ron Montgomery   +3 more
openaire   +1 more source

Corrosion Mechanism of NiCrWMo Coating Deposited by HVOF

ECS Transactions, 2014
Coatings Ni-Co-W- Mo have excellent resistance to abrasion and wear, further have good resistance to corrosion in acid and alkaline aqueous media. The thermal spraying technique Oxy-Fuel high speed (Hight Velocity Oxygen-fuel) was used to deposit the coating of the alloy on 304 stainless steel substrates.
Jamnie Yazmin Achem Calahorra, Citlalli Gaona Tiburcio, Francisco Estupiñan, Ariadna Trujillo Estrada, Carlos Poblano Salas, Facundo Almeraya Calderón, Jose Angel Cabral Miramontes   +6 more
openaire   +1 more source

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

Computational modeling of the HVOF process

Thermal Spray Bulletin, 2014
Precise control of the high velocity oxygen-fuel spray (HVOF) process parameters is important to obtain high-performance coatings. The coating particle in-flight state is commonly monitored by measuring the in-flight temperature and velocity. To complement the available measurement techniques, a computational model for the gas flow and coating powder ...
Suhonen, Tomi, Varis, Tommi, Pinomaa, Tatu   +3 more
openaire   +3 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

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

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