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Analysis of cold spray‐coated boiler‐tube material in a

Characterization and High-Temperature Oxidation Behavior

Jun 25, 2011 · Microstructure and mechanical properties of cold-spray coatings are usually required in order to explore the potential industrial application of the latter. This article demonstrates the successful formulation of Ni-20Cr and Ni-50Cr coatings on two boiler steels, namely, SAE 213-T22 and SA 516 steel by cold-spray process. The microstructure, coating thickness, phase formation, and

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Analysis of cold spray‐coated boiler‐tube material in a

In this study, a corrosion‐resistant coating of 75%Cr 3 C 2 –25%NiCr is tested in a Na 2 SO 4 –10%NaCl environment at 900°C under cyclic conditions. The 289‐μm‐thick cold spray‐coating was dense (porosity, 0.925%), hard (average, 866 H V) and smooth with a surface roughness of 6.07 μm. Tribology tests on the pin‐on‐disc machine gave an average mean friction coefficient of 0.071 ± 0.006.

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Boiler Tubes Coating with Arc Spray - YouTube

May 21, 2015 · Up to10%cash back · The erosion-corrosion (E-C) behavior of a cold-spray nanostructured Ni-20Cr coating was studied under cyclic conditions in a coal-fired boiler. This study was done for 15 cycles (1500 h), in which each cycle comprised 100 h of heating in the boiler environment, followed by 1 h of cooling under ambient air conditions. The E-C extent was evaluated in terms of …

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Accelerated hot corrosion studies of cold spray Ni–50Cr

Boiler Coating On-Site and In-House with HVAF Chrome Carbide

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(PDF) BOILER TUBE FAILURE ANALYSIS - ResearchGate

To determine the chemical analysis of the samples of the material used in boiler tubes To examine the microstructure of the boiler tube. 1.6 Assumptions

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Corrosion Behaviour of HVOF Sprayed - Scientific.Net

In present study HVOF spraying process had been employed for depositing 93(WC-Cr3C2)-7Ni, 75Cr3C2-25NiCr, 83WC-17CO and 86WC-10CO-4Cr coatings on ASME SA213 T22. All the coatings were found dense and uniform having thickness between 200-250µm. All the coatings on ASME SA213 T22 used in present studies have provided resistance to corrosion in coal fired boiler environment in superheater …

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Boiler Coating On-Site and In-House with HVAF Chrome …

Analysis of cold spray‐coated boiler‐tube material in a chlorine‐based corrosive environment at 900° C This results in variation of the coating microstructure for different coating

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Erosion–corrosion behavior of cold-spray nanostructured Ni

May 01, 2015 · The authors have already studied the oxidation behavior of cold-spray coated boiler (T22 and SA 516) steels . The objective of the study is to provide E–C performance database for the developed coating, which can be used by the boiler industry. 2. Experimental details

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Erosion Behavior of Cold Sprayed Ni based Coating on

Jan 01, 2010 · Ni–50Cr alloy powder was successfully sprayed on boiler steels namely T22 and SA 516 by the cold spray process, which resulted in a dense adherent and oxide free coatings on the steels. • Ni–50Cr cold spray coatings were found to have significantly higher microhardness (in the range 440–481 Hv) in comparison with T22 and SA 516 steels.•

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Development of Erosion-Corrosion-Resistant Cold-Spray

Boiler Coating On-Site and In-House with HVAF Chrome Carbide

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Study of mechanical properties and high temperature

Feb 15, 2015 · The widely used boiler tube materials in the power plant boilers of Northern India, such as T22 and SA 516 steels, were selected as substrate materials in the present study. XRD profiles of bare and cold-spray coated boiler steels subjected to cyclic air oxidation at 900 Surface SEM/EDS analysis for bare and cold-spray coated steels

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Nickel-based HVOF coatings promoting high temperature

The uncoated boiler tubes corroded strongly, whereas the thermal spray coatings exhibited excellent corrosion performance. This paper presents the tube failure at the cold economizer, exposure conditions, the analysis of the coated and uncoated samples, and the corrosion mechanisms of the steel tubes.

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Harminder SINGH | Assistant Professor in Mechanical

Analysis of cold spray‐coated boiler‐tube material in a chlorine‐based corrosive environment at 900° C which spray particles are deposited via supersonic velocity impact at a

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T.S. SIDHU | Director | M.E. in Mechanical Engineering

Boiler Coating On-Site and In-House with HVAF Chrome Carbide

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Hot corrosion behavior of boiler tube materials in refuse

May 27, 2002 · Hot corrosion behavior of boiler tube material in the actual refuse incineration plant. A schematic diagram of the boiler in an actual plant is shown in Fig. 2. In this boiler, chlorine, sulfur and other compounds are contained in the combustion ash and incineration ash. These compounds cause corrosion of the tubes.

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Boiler tubes, Boiler steel tubes, Boiler steel pipe

Fire tube boilers are the third of the four historical types of boilers: low-pressure tank or "haystack" boilers, flue boilers with one or two large flues, fire tube boilers and high-pressure boilers with many small tubes. Water Tube Boiler. Water tube boiler is a type of boiler in which water circulates in tubes heated externally by the fire.

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Behaviour of cold sprayed superalloy in incinerator at 900

The present study tested the ability of a novel, facile and relatively less reported cold spray technique to develop the coatings for high temperature applications in the boiler tubes. The behaviour of the coating depends upon its microstructure, which further is decided by the coating deposition technique. The coating–substrate system material composition also affects its behaviour. For

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Corrosion Prevention in Biomass and Waste to Energy

Hot Molten Salt Corrosion of WTE Boilers and Waste Incinerators. The hot molten salt fireside boiler corrosion process starts similarly to the high-temperature corrosion described above under the condition that the temperature of the tube surface is higher than the melting point of the precipitated salts so that salt melts directly on the metal surface.

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Sukhminderbir KALSI | Head of Department | PhD | Punjab

Analysis of cold spray‐coated boiler‐tube material in a chlorine‐based corrosive environment at 900° C applications in the boiler tubes. The behaviour of the coating depends upon its

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T.S. SIDHU | Director | M.E. in Mechanical Engineering

Analysis of cold spray‐coated boiler‐tube material in a chlorine‐based corrosive environment at 900° C This results in variation of the coating microstructure for different coating

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