The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Benjamin Remy - One of the best experts on this subject based on the ideXlab platform.
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Columnar suspension plasma sprayed Coating microstructural control for thermal barrier Coating Application
Journal of the European Ceramic Society, 2016Co-Authors: Benjamin Bernard, Aurélien Joulia, André Malié, Luc Bianchi, Benjamin RemyAbstract:Suspension plasma spraying (SPS) is used to perform enhanced YSZ Coating with columnar microstructure for thermal barrier Coating (TBC) Applications. By combination of plasma flow, substrate preparation, suspension formulation and injection or Coating kinematic management it is possible to tune SPS Coating structure from widely-separated columns to a significantly more compact columnar structure. Among these parameters, substrate roughness control, combined with an adapted Coating growth velocity, are identified as the most relevant. An analytical approach is presented to describe columns growth based on Coating image analysis. It allows to give the expression of the lateral and normal growth speeds responsible of the columnar structure.
Elisabete Almeida - One of the best experts on this subject based on the ideXlab platform.
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Surface Treatments and Coatings for Metals. A General Overview. 2. Coatings: Application Processes, Environmental Conditions during Painting and Drying, and New Tendencies
Industrial & Engineering Chemistry Research, 2020Co-Authors: Elisabete AlmeidaAbstract:Given the diversity and complexity of technologies involved in the surface treatments and Coatings sector, it is very difficult to find references in the existing literature that interlink most of them. The work that is presented here is aimed at filling that gap. In view of its length, it has been necessary to divide it into two parts. The first part deals with surface treatments and refers to the preparation of surfaces and the nature of Coatings as two of the factors that affect anticorrosive protection by Coatings. In this second part the latter are completed by consideration of Coating Application processes and environmental conditions during Application and drying. Finally, a brief review is made of new tendencies in the sector.
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Surface treatments and Coatings for metals. A general overview. 1. Surface treatments, surface preparation, and the nature of Coatings
Industrial and Engineering Chemistry Research, 2001Co-Authors: Elisabete AlmeidaAbstract:Given the diversity and complexity of technologies involved in the surface treatments and Coatings sector, it is very difficult to find references in the existing literature that interlink most of them. The work that is presented here is aimed at filling that gap. In view of its length, it has been necessary to divide it into two parts. This first part deals with surface treatments and refers to the preparation of surfaces and the nature of Coatings as two of the factors that affect anticorrosive protection by Coatings. In the second part, the latter will be completed by consideration of Coating Application processes and environmental conditions during Application and drying. Finally, a brief review will be made of new tendencies in the sector.
Dhirendra Kumar - One of the best experts on this subject based on the ideXlab platform.
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ethylene vinyl acetate and ethylene vinyl alcohol copolymer for thermal spray Coating Application
Progress in Organic Coatings, 2008Co-Authors: S P Tambe, M Patri, S K Singh, Dhirendra KumarAbstract:Abstract Ethylene vinyl acetate (EVA) copolymer with varying vinyl acetate (VAc) content, viz. 18%, 28% and 40% has been hydrolyzed using alcoholic NaOH solution. Fourier Transform Infrared Spectroscopy (FTIR) analyses of hydrolyzed polymer showed the presence of both OH group and acetate group indicating that the EVA has been partially hydrolyzed. Differential Scanning Calorimeter (DSC) and Thermo Gravimetric Analyzer (TGA) of EVA and hydrolyzed EVA showed large difference in melting and decomposition temperature, respectively. Hydrolyzed EVA showed higher tensile strength and elongation at break compared to corresponding EVA. Blends of different grades of EVA and ethylene vinyl alcohol (EVAl) with low density polyethylene (LDPE) were applied on grit blasted mild steel surface by flame spray technique. FTIR analysis of blends before and after Coating showed no degradation during flame spray. Measurement of adhesion strength of these Coating showed that adhesion strength increased on hydrolysis of EVA.
L. C. Pathak - One of the best experts on this subject based on the ideXlab platform.
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Fabrication of Nanosized Lanthanum Zirconate Powder and Deposition of Thermal Barrier Coating by Plasma Spray Process
Journal of Materials Engineering and Performance, 2016Co-Authors: S.k. Mishra, N. Jagdeesh, L. C. PathakAbstract:The present manuscript discusses our findings on fabrication of nanosized lanthanum zirconate powder for thermal barrier Coating Application and its Coating by plasma spray on nickel-based superalloy substrate. Single-phase La_2Zr_2O_7 Coating of thickness of the order of 45 µm on the Ni-Cr-Al bond coat coated Ni-based superalloy substrate was deposited by plasma spray process. The layers at the interface did not show spallation and inter diffusion was very less. The microstructure, interface, porosity, and mechanical properties of different layers are investigated. The lanthanum zirconate hardness and modulus were 10.5 and 277 GPa, respectively. The load depth curve for lanthanum zirconate showed good elastic recovery around 74%.
Benjamin Bernard - One of the best experts on this subject based on the ideXlab platform.
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Columnar suspension plasma sprayed Coating microstructural control for thermal barrier Coating Application
Journal of the European Ceramic Society, 2016Co-Authors: Benjamin Bernard, Aurélien Joulia, André Malié, Luc Bianchi, Benjamin RemyAbstract:Suspension plasma spraying (SPS) is used to perform enhanced YSZ Coating with columnar microstructure for thermal barrier Coating (TBC) Applications. By combination of plasma flow, substrate preparation, suspension formulation and injection or Coating kinematic management it is possible to tune SPS Coating structure from widely-separated columns to a significantly more compact columnar structure. Among these parameters, substrate roughness control, combined with an adapted Coating growth velocity, are identified as the most relevant. An analytical approach is presented to describe columns growth based on Coating image analysis. It allows to give the expression of the lateral and normal growth speeds responsible of the columnar structure.