38 Result(s)

Article

Design, integration and preliminary results of the IXV Catalysis experiment

The CATalytic Experiment (CATE) is an in-flight demonstration of catalysis effects at the surface of thermal protection materials. A high-catalytic coating was applied over the baseline ceramic material on the...

Alan Viladegut, F. Panerai, O. Chazot, T. Pichon, P. Bertrand… in CEAS Space Journal (2017)

Article

Knudsen Effect on the Estimation of the Effective Thermal Conductivity of Thermal Barrier Coatings

A numerical model based on the use of cross-sectional micrographies and a 3D image of thermal barrier coatings for the estimation of the material effective thermal conductivity is presented. The case of a YSZ ...

J. H. Qiao, R. Bolot, H. L. Liao, C. Coddet in Journal of Thermal Spray Technology (2013)

Article

Measurement of Specific Enthalpy Under Very Low Pressure Plasma Spray Condition

VLPPS has attracted much attention in recent years, especially concerning its potential applications but not so much concerning the properties of the plasma jet. Operating parameters such as the chamber pressu...

N. Zhang, F. Sun, L. Zhu, M.P. Planche, H. Liao… in Journal of Thermal Spray Technology (2012)

Article

Electron Temperature and Density of the Plasma Measured by Optical Emission Spectroscopy in VLPPS Conditions

Measurements of electron temperature and electron density have been carried out on a plasma plume under very low pressure conditions (P = 1 mbar) using optical emission spectroscopy. The plasma torch was operated...

N. Zhang, F. Sun, L. Zhu, M. P. Planche, H. Liao… in Journal of Thermal Spray Technology (2011)

Article

Pre-/During-/Post-Laser Processes to Enhance the Adhesion and Mechanical Properties of Thermal-Sprayed Coatings with a Reduced Environmental Impact

Lasers have been used to improve the ultimate performance of thermal spray coatings for specific applications, but the full potential of additional laser treatments must be further explored. Laser treatments (...

D. Garcia-Alonso, N. Serres, C. Demian, S. Costil… in Journal of Thermal Spray Technology (2011)

Article

Characteristics of Cu Film Deposited Using VLPPS

Cu coatings were obtained by the very low pressure plasma spray (VLPPS) process using a torch F4-VB. The tank pressure was varied from 1 to 5 mbar: these specific conditions can be allowed to obtain a higher v...

N. Zhang, F. Sun, L. Zhu, C. Verdy, M. P. Planche… in Journal of Thermal Spray Technology (2011)

Article

Influence of the Surface State on the Adherence of the Coating: Case of an Alumina Coating Plasma Sprayed on SiC Composites

In thermal spraying, adherence between the coating and the substrate appears as the fundamental point. To favor a good interaction between both, it is often necessary to clean and prepare the substrate surface...

S. Costil, S. Lukat, C. Verdy, C. Coddet in Journal of Thermal Spray Technology (2011)

Article

Structure and Tribological Performance of Nanostructured ZrO₂-3 mol% Y₂O₃ Coatings Deposited by Air Plasma Spraying

In this study, nanostructured ZrO₂-3 mol% Y₂O₃ coatings were deposited by air plasma spray using reconstituted feedstock. The coating structures were characterized by x-ray diffractometer, micro-Raman spectromete...

B. Liang, G. Zhang, H. L. Liao, C. Coddet… in Journal of Thermal Spray Technology (2010)

Article

Different spray processes for different Al₂O₃ coating properties

Among the different coating technologies, a thermal spray has a leading position because of its versatility: an extremely wide variety of materials can be deposited to protect back materials from wear, corrosi...

M. P. Planche, S. Costil, C. Verdy, C. Coddet in Applied Physics A (2010)

Article

The Effect of Robot Kinematics on the Coating Thickness Uniformity

The torch speed is one of the most important operating parameters in thermal spraying. Generally, in order to keep a uniform coating thickness, the movement of the torch should be constant. Nevertheless, when ...

D. Fang, S. Deng, H. Liao, C. Coddet in Journal of Thermal Spray Technology (2010)

Article

Remelting of Flame Spraying PEEK Coating Using Lasers

Flame spraying is frequently used for polyether ether ketone (PEEK) and PTFE coating deposition on metallic surfaces. However, this process has a certain number of limitations, particularly on the coating qual...

A. Soveja, S. Costil, H. Liao, P. Sallamand… in Journal of Thermal Spray Technology (2010)

Article

Effect of heat treatment on microstructure and mechanical properties of cold sprayed Ti coatings with relatively large powder particles

In this study, the effect of post-spray heat treatment on the microstructure, microhardness, and adhesive strength of the cold-sprayed Ti coating was investigated. It was found that a thick and relatively poro...

W.-Y. Li, C. Zhang, H. Liao, C. Coddet in Journal of Coatings Technology and Research (2009)

Article

Effect of Ball Milling of Feedstock Powder on Microstructure and Properties of TiN Particle-Reinforced Al Alloy-Based Composites Fabricated by Cold Spraying

Dense Al5356/TiN composites with TiN particles uniformly dispersed in the matrix were produced by cold spraying (CS) using both the mechanically mixed (MM) and ball-milled (BM) powder blends with 50 wt.% TiN c...

W.-Y. Li, G. Zhang, C. Zhang, O. Elkedim, H. Liao… in Journal of Thermal Spray Technology (2008)

Article

On the Role of Spraying Process on Microstructural, Mechanical, and Thermal Response of Alumina Coatings

Thermal spraying is a widely used technology for industrial applications to provide coatings that improve the surface characteristics. According to the specificities of processes (APS, VPS, flame, electric arc...

S. Costil, C. Verdy, R. Bolot, C. Coddet in Journal of Thermal Spray Technology (2007)

Article

Liquid plasma sprayed coatings of yttria-stabilized zirconia for SOFC electrolytes

To achieve solid oxide fuel cells (SOFC) at reduced costs, the atmospheric plasma spray (APS) process could be an attractive technique. However, to make dense and thin layers as needed for electrolytes, a susp...

R. Rampon, F. L. Toma, G. Bertrand, C. Coddet in Journal of Thermal Spray Technology (2006)

Article

Characterization of YSZ solid oxide fuel cells electrolyte deposited by atmospheric plasma spraying and low pressure plasma spraying

Yttria doped zirconia has been widely used as electrolyte materials for solid oxide fuel cells (SOFC). Plasma spraying is a cost-effective process to deposit YSZ electrolyte. In this study, the 8 mol% Y₂O₃ stabil...

C. Zhang, H. L. Liao, W. Y. Li, G. Zhang, C. Coddet… in Journal of Thermal Spray Technology (2006)

Article

Exploring thermal spray gray alumina coating pore network architecture by combining stereological protocols and impedance electrochemical spectroscopy

Complex multiscale pore network architecture characterized by multimodal pore size distribution and connectivity develops during the manufacture of ceramic thermal spray coatings from intra- and interlamellar ...

G. Antou, G. Montavon, F. Hlawka, A. Cornet… in Journal of Thermal Spray Technology (2006)

Article

Role of the laser surface preparation on the adhesion of Ni−5%Al coatings deposited using the PROTAL process

The thermal spraying assisted by laser (PROTAL) process combines a laser surface preparation followed by a thermal spray process. This type of surface preparation avoids some drawbacks of the degreasing and sa...

H. Li, S. Costil, H -L. Liao, C. Coddet in Journal of Thermal Spray Technology (2006)

Article

Influence of surface laser cleaning combined with substrate preheating on the splat morphology

The morphology of sprayed splats influences the coating adhesion and properties, which are determined by the spraying parameters. Many studies in this field show that the substrate surface temperature is a ver...

S. Costil, H. Liao, A. Gammoudi, C. Coddet in Journal of Thermal Spray Technology (2005)

Article

Indentation analysis of plasma-sprayed Cr₃C₂-NiCr coatings

J. F. Li, X. Y. Wang, H. Liao, C. X. Ding, C. Coddet in Journal of Materials Science (2004)