Studies on the properties of high-velocity oxy-fuel thermal spray coatings for higher temperature applications

Sidhu, T. S.; Prakash, S.; Agrawal, R. D.

doi:10.1007/s11003-006-0047-z

Cited by 108 publications

(53 citation statements)

References 54 publications

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“…Water-cooled components, in the off-gas duct systems such as pans, roofs, boxes and panels, are subjected to high-velocity combustion gases that contain a number of corrosives chemicals that condense and attack the heat transfer surfaces. Coatings used are those developed for high-temperature wear and corrosion resistance (see the articles of Wang and Verstak (1999), Higuera Hidalgo et al (2001), Sidhu et al (2005), (2006), Kaushal et al (2011)). …”

Section: Components Of Furnacesmentioning

confidence: 99%

Thermal Sprayed Coatings Used Against Corrosion and Corrosive Wear

Fauchais¹,

Vardelle²

2012

Advanced Plasma Spray Applications

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Section: Components Of Furnacesmentioning

confidence: 99%

Thermal Sprayed Coatings Used Against Corrosion and Corrosive Wear

Fauchais¹,

Vardelle²

2012

Advanced Plasma Spray Applications

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“…Among the several technologies for depositing metallic coatings on metallic substrates, thermal spray high-velocity oxygen-fuel (HVOF) is one of the most versatile [8] and efficient technologies, with many multiscale features [9,10], capacity to produce homogeneous [11] and very dense coatings [12][13][14][15][16][17] with porosity levels typically in the range 0.1-2% [13], low oxide content [11,12], high hardness [13,18], excellent bond strength frequently exceeding 69 MPa [11,13,19], and low decarburization [13,20]. Also, the low gas temperature of particles avoids superheating during flight and preserves the nanocrystalline structure of the starting powders of the coating [21].…”

Section: Introductionmentioning

confidence: 99%

“…e HVOF thermal spray system utilizes high-pressure combustion (6-10 bars for the HVOF spray system of third generation [13]) of oxygen and gaseous fuels, such as hydrogen, propane, and propylene, or liquid fuels, such as kerosene. Combustion produces a flow of hot gas at supersonic or hypersonic velocity of approximately 2000 m/s [19,[22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…e flame achieves supersonic velocities in the process of expansion at the exit of the convergent-divergent nozzle with a diameter size from 8 to 9 mm [13,22] and temperatures in the range of 2500-3200°C, depending on the type of the fuel, the fuel-to-oxygen ratio, and the combustion pressure [13,25,26]. Powders, with typical particle sizes of 10-63 μm [13], are axially or radially introduced into the stream of gases at the exit of the nozzle [19,26,27], molten or semimolten in a temperature range of 900-1800°C [28], and, passing through the gun barrel nozzle, propelled with the produced gas at a supersonic velocity [29] of 300-800 m/s toward the surface of the substrate [13,19,26] at typical mass flow rates in the range of 2.3-14 kg/h [25].…”

Section: Introductionmentioning

confidence: 99%

“…e HVOF thermal spray technology has primarily been used for wear-resistant coatings; however, because HVOF produces very dense coatings, it can be used for very good corrosion-resistant coatings providing longer lifetimes than the uncoated substrate [13,19].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ni‐Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters

Crescenzo

Karatza

Musmarra

et al. 2018

Advances in Materials Science and Engineering

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is work aims at contributing to the development of a revolutionary technology based on shape memory alloy (SMA) coatings deposited on-site to large-scale metallic structural elements, which operate in extreme environmental conditions, such as steel bridges and buildings. e proposed technology will contribute to improve the integrity of metallic civil structures, to alter and control their mechanical properties by external stimuli, to contribute to the stiffness and rigidity of an elastic metallic structure, to safely withstand the expected loading conditions, and to provide corrosion protection. To prove the feasibility of the concept, investigations were carried out by depositing commercial NiTinol Ni50.8Ti (at.%) powder, onto stainless steel substrates by using high-velocity oxygen-fuel thermal spray technology. While the NiTinol has been known since decades, this intermetallic alloy, as well as no other alloy, was ever used as the SMA-coating material. Due to the influence of dynamics of spraying and the impact energy of the powder particles on the properties of thermally sprayed coatings, the effects of the main spray parameters, namely, spray distance, fuel-to-oxygen feed rate ratio, and coating thickness, on the quality and properties of the coating, in terms of hardness, adhesion, roughness, and microstructure, were investigated.

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Experimental investigations on spray flames and emissions analysis of diesel and diesel/biodiesel blends for combustion in oxy‐fuel burner

Elkelawy

Bastawissi

El‐Shenawy

et al. 2019

Asia-Pacific J Chem Eng

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Present research work shows the emissions and flame analysis of oxy‐fuel combustion of diesel and diesel/biodiesel blends in the experimental test burner manufactured in Mechanical power engineering laboratory at Tanta University, Egypt. Diesel and a mixture of diesel and biodiesel (B0, B10, B20, B30, and B40) used as a fuel with the effect of pure air and oxy‐combustion. Different emission parameters (carbon monoxide, carbon dioxide, unburned hydrocarbons, NOx, and soot opacity) and the flame parameters (flame cone angle and flame length) were also studied. It has been found that the emission parameters and the flame temperature are higher in diesel fuel than diesel and biodiesel blends for pure air combustion and oxy‐combustion. It has also been found that flame parameters (the flame cone angle and flame penetration length) decreased by adding the oxygen into the charged air and increased by increasing the biodiesel mass percentage. The complete combustion of the fuel blends will dramatically increase the flame temperature due to the presence of a sufficient amount of oxygen for the early chemical reaction between fuel and oxidizer. These results indicated that the biodiesel could be the best alternative as well as an environmentally friendly fuel for diesel engines.

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Studies on the properties of high-velocity oxy-fuel thermal spray coatings for higher temperature applications

Cited by 108 publications

References 54 publications

Thermal Sprayed Coatings Used Against Corrosion and Corrosive Wear

Thermal Sprayed Coatings Used Against Corrosion and Corrosive Wear

Ni‐Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters

Experimental investigations on spray flames and emissions analysis of diesel and diesel/biodiesel blends for combustion in oxy‐fuel burner

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