Results 191 to 200 of about 8,523 (209)

SOFC Interconnector Coating using HVOF Process

International Thermal Spray Conference, 2006
Abstract This paper describes an initial development of oxidation resistant coatings for SOFC (solid oxide fuel cell) interconnectors using LaSrCoFe oxide (LSCF, (La0.6Sr0.4)(Fe0.8Co0.2)O3). The process involved the development of hermetic coatings using a HVOF (high velocity oxy-fuel) spray process, specifically a θ-gun spray process ...
S.Y. Hwang, J.H. Kim, B.G. Seong, H. Yang   +3 more
openaire   +1 more source

HVOF Sprayed Hydroxyapatite/Titania Composite Coatings

International Thermal Spray Conference, 2001
Abstract As ceramic materials, the use of hydroxyapatite (HA) in clinical applications is severely limited by its intrinsic poor mechanical properties. The incorporation of some bioinert ceramics is believed to be a way to improve the mechanical reliability of HA matrix.
K.A. Khor, H. Li, P. Cheang
openaire   +1 more source

Bonding Mechanisms of HVOF Sprayed Coatings

International Thermal Spray Conference, 2002
Abstract This paper examines the bonding characteristics of HVOF sprayed layers. In order to determine the dominant adhesion mechanism, the coatings are applied to substrates of varying surface roughness with powder particles that are completely melted, in one case, and only partially melted, with solid and liquid phases, in another. The
C.-J. Li, Y.-Y. Wang
openaire   +1 more source

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

HVOF coatings for steam oxidation protection

Materials and Corrosion, 2008
AbstractIn the context of the European project ‘Coatings for Supercritical Steam Cycles’ (SUPERCOAT), the use of steam oxidation resistant coatings on currently available ferritic materials with high creep strength but poor oxidation resistance was investigated in order to allow increase in the operating temperature of steam power plants from 550 to ...
A. Agüero, R. Muelas, V. Gonzalez
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 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

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

Hard chromium substitution using HVOF coatings

International Heat Treatment and Surface Engineering, 2008
Abstract Electroplated hard chromium coatings have long been used to improve the wear and/or corrosion resistance of components. However, concerns over the health problems associated with hexavalent chromium solutions have led to increasing regulation of this process route. One promising substitute for hard chromium is 'cermet' layers (e.g.
L. C. Casteletti, Rafael Nucci, Lombardi A. Neto, E. A. B. Arnoni, G. E. Totten   +4 more
openaire   +1 more source

Component repair using HVOF thermal spraying

Journal of Materials Processing Technology, 1999
Abstract The high velocity oxy-fuel (HVOF) thermal spraying technique has been widely adopted in many industries due to its flexibility and cost effectiveness. It is normally used to apply coatings to components to protect against wear, heat and/or corrosion, but also has potential to build up worn components.
J.C Tan, L Looney, M.S.J Hashmi
openaire   +1 more source