Results 171 to 180 of about 8,523 (209)
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Tensile Testing of HVOF-Sprayed Coatings
International Thermal Spray Conference, 1999Abstract In this paper, the Young's modulus, Poisson's ratio, and ultimate tensile strength of HVOF-sprayed NiCr (80/20) coating are evaluated by a uniaxial tensile test parallel to the coating plane. The effect of stand off distance is also considered.
Varis, Tommi +3 more
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International Thermal Spray Conference, 2004
Abstract A secondary acetylene after burner attached with an HVOF gun has been developed to produce high quality coatings required of ceramics. The secondary burner adds heat energy, enough to make deposition, to fine ceramic particles heated and accelerated by an HVOF gun.
T. Morishita, S. Osawa, T. Itsukaichi
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Abstract A secondary acetylene after burner attached with an HVOF gun has been developed to produce high quality coatings required of ceramics. The secondary burner adds heat energy, enough to make deposition, to fine ceramic particles heated and accelerated by an HVOF gun.
T. Morishita, S. Osawa, T. Itsukaichi
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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 +3 more
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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 +3 more
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Optimized HVOF Titania Coatings
Journal of Thermal Spray Technology, 2003A series of spray parameters was tested for a titania (TiO2) feedstock, and the in-flight particle temperature was measured for each setting combination. The parameter set that resulted in the highest particle temperature was selected for producing coatings for further study and analysis.
R. S. Lima, B. R. Marple
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Mechanical Properties of Nanocrystalline HVOF Coatings
Materials Science Forum, 2006Thermal spraying (TS) is increasingly used to deposit thick wear resistant coatings on machine and equipment parts. Therefore, it is of uttermost importance to know their mechanical properties in order to tailor and optimize the coatings for various applications.
Hannula, Simo-Pekka +3 more
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Journal of Thermal Spray Technology, 2021
In the high velocity oxygen fuel (HVOF) spray process, coating properties are sensitive to the characteristics of in-flight particles, which are mainly determined by process parameters. Obtaining a comprehensive multi-physical model or analysis of the HVOF process remains challenging because of the complex chemical and thermodynamic reactions that ...
Meimei Liu +5 more
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In the high velocity oxygen fuel (HVOF) spray process, coating properties are sensitive to the characteristics of in-flight particles, which are mainly determined by process parameters. Obtaining a comprehensive multi-physical model or analysis of the HVOF process remains challenging because of the complex chemical and thermodynamic reactions that ...
Meimei Liu +5 more
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Heat transfer during HVOF deposition
Surface and Coatings Technology, 1998Heat 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 +3 more
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HVOF Coating and Characterization
2014HVOF Coating is one of the thermal barrier coatings to protect surfaces from high temperature, corrosion, and erosion environments. Coating characteristics including thickness, metallurgy, elemental composition, and morphology play an important role in practical applications.
Bekir Sami Yilbas +2 more
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Cavitation Erosion of HVOF Coatings
International Thermal Spray Conference, 1996Abstract The proposed paper reports a series of experiments to investigate the cavitation erosion mechanism of HVOF coatings. Vibratory cavitation erosion tests according to ASTM G 32 have been carried out with several HVOF coatings including cermets, oxides and metallic alloys.
R. Schwetzke, H. Kreye
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HVOF Process Control Enabling Strategies
International Thermal Spray Conference, 2012Abstract Complexity in dynamics and mechanism of supersonic flame formation and effects of processing variables has made the understanding of interaction of particles and flame a difficult task. Lack of such understanding limits the possibilities of controlling the process to obtain desired in-flight particles temperature and velocity ...
A. Ghabchi +6 more
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