High temperature oxidation and corrosion in marine environments of thermal spray deposited coatings

Chaliampalias, D.; Vourlias, G.; Pavlidou, E.; Stergioudis, G.; Σκολιανός, Σ.; Chrissafis, K.

doi:10.1016/j.apsusc.2008.08.101

Cited by 57 publications

(31 citation statements)

References 6 publications

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“…A pesar de que sean altos los costos de la aplicación de estos revestimientos, aproximadamente 1,5 veces mayor que los de sistemas de pintura de alto desempeño, los respectivos costos del ciclo de vida son menos de tres cuartos de los costos de sistemas de pintura, justificando su uso. La ventaja de la aplicación de materiales por rociado térmico, con alambres tubulares es la posibilidad de formular las propiedades físicas y metalúrgicas requeridas en la composición de los polvos dentro del alambre [44,45].…”

Section: Ventajas Del Rociado Térmicounclassified

La tecnología de recuperación y protección contra el desgaste está en el rociado térmico.

Arévalo

2014

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La tecnología de recuperación y protección contra el desgaste está en el rociado térmico La tecnología de recuperación y protección contra el desgaste está en el rociado térmicoThe technology against the wearing is the thermal spray RESUMENLos recubrimientos por rociado térmico están ayudando a controlar y disminuir los problemas superficiales que implican desgaste y corrosión. Los recubrimientos por rociado térmico sirven para mejorar características mecá-nicas, físicas y químicas, dando calidades superiores de funcionamiento a la superficie. La variedad de productos y capas que se pueden obtener por rociado térmico, son virtualmente ilimitadas. Las técnicas de rociado térmico son sistemas de combustión por llama, oxi-combustible de alta velocidad, detonación; sistemas de arco eléctrico, plasma con arco transferido y no transferido. Estos procesos son usados con éxito en el mundo desarrollado y vienen incrementando las inversiones industriales en este campo, y también es usado por instituciones de investigación para el desarrollo de nuevas aplicaciones y la evaluación de las propiedades físicas, químicas y mecánicas de estas capas protectoras. La protección y modificación de la superficie y sus propiedades, son una herramienta potente en la ingeniería moderna, en donde las nuevas aplicaciones de la tecnología de rociado térmico son una alternativa técnica, económica y competitiva para la industria. También, permite mejorar la productividad de los procesos, contribuyendo a aumentar la funcionalidad de partes que trabajan bajo condiciones severas de desgaste.Palabras clave: Rociado térmico, Recubrimientos, Desgaste, Corrosión, Ingeniería de superficies. ABSTRACTThermal spray coatings are helping to control and reduce superficial problems involving wear and corrosion. Thermal spray coatings are profitable and serve to improve mechanical, physical and chemical performance giving superior qualities to the surface. The variety of products and layers that can be obtained by thermal spraying is virtually limitless. The techniques of thermal spraying are combustion systems by flame spray, high velocity Oxi-fuel, detonation and electric arc systems, plasma spray with transferred and not transferred arc. These processes are used successfully in the developed world and are increasing industrial investment in this field, and are also used by research institutes to develop new applications and to evaluate the physical, chemical and mechanical properties of protective coatings. The protection and surface modification and their properties, are a powerful tool of modern engineering, where, new applications of thermal spray technology is an alternative technical, economic and competitive in industry, Also, it can improve processes productivity, helping to increase the functionality of parts working under severe conditions of wear.

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Section: Ventajas Del Rociado Térmicounclassified

La tecnología de recuperación y protección contra el desgaste está en el rociado térmico.

Arévalo

2014

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“…Among the available alternatives for metal surface protection in aggressive environments, such as the marine environment, the thermal spray process has been widely researched and used in recent years 1,2,4,5 . Thermal spraying represents a range of techniques employed to obtain coatings that promote corrosion and wear resistance improvements in components [6][7][8][9][10][11] at lower costs than other processes 1,2 . In this process, a powder material is sprayed, melted or semi-melted by heat generated in the nozzle of a spray torch 5,6 .…”

Section: Introductionmentioning

confidence: 99%

“…Thermal spraying represents a range of techniques employed to obtain coatings that promote corrosion and wear resistance improvements in components [6][7][8][9][10][11] at lower costs than other processes 1,2 . In this process, a powder material is sprayed, melted or semi-melted by heat generated in the nozzle of a spray torch 5,6 . After fusion, the material is projected against the surface to be coated, resulting in a layered structure consisting of flattened particles in the direction parallel to the substrate surface, containing, oxide inclusions, voids and porosity 1,2 .…”

Section: Introductionmentioning

confidence: 99%

“…Thermal spraying techniques are subdivided in several types based on the material to be applied to the heating source and the method of accelerating particles towards the substrate 12 . Among the various methods, high-velocity oxygen-fuel (HVOF) thermal spraying stands out for its ability to operate at lower temperatures 6 and the better quality of the coating obtained. In this process, a reaction occurs between a fuel introduced with oxygen into a combustion chamber.…”

Section: Introductionmentioning

confidence: 99%

“…In this process, a reaction occurs between a fuel introduced with oxygen into a combustion chamber. The combustion is initiated by an ignition system, and the energy released in the reaction is converted to heat and pressure that warm and boost the particles alongside the gas, forming a jet of flame 6,13 . The particles reach hypersonic velocities, forming a coating with extremely low porosity (typically <1%) and high adhesion force 14,15 .…”

Section: Introductionmentioning

confidence: 99%

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Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF

et al. 2014

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The present study aimed to create and characterize niobium and niobium-iron60% coatings applied to steel API 5L X70 using the hypersonic thermal spray process (HVOF). The morphologies of the coatings were analyzed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and profilometry, while the coatings' hardnesses was evaluated using the Vickers hardness test. The coatings' corrosion resistance was evaluated by monitoring their open circuit potential and potentiodynamic polarization and performing electrochemical impedance spectroscopy in a 0.05 M NaCl solution. The results showed that the niobium-iron coating contained minor porosity regions, while such defects occurred over large regions of the niobium coating. In terms of corrosion resistance, the coatings obtained in this work promoted a reduction in the substrate's corrosion rate, but the presence of discontinuities such as porosity compromised the barrier effects of these coatings.

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Surface Characteristics and High Temperature Oxidation Resistance Performance of Stainless Steel Foam Modified by Pack Aluminizing and Moderate Oxidation

Huo

Zhou

Wang

et al. 2011

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High temperature oxidation and corrosion in marine environments of thermal spray deposited coatings

Cited by 57 publications

References 6 publications

La tecnología de recuperación y protección contra el desgaste está en el rociado térmico.

La tecnología de recuperación y protección contra el desgaste está en el rociado térmico.

Niobium and niobium-iron coatings on API 5LX 70 steel applied with HVOF

Surface Characteristics and High Temperature Oxidation Resistance Performance of Stainless Steel Foam Modified by Pack Aluminizing and Moderate Oxidation

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