Slurry and cavitation erosion resistance of thermal spray coatings

Santa, Juan Felipe; Espitia, L.A.; Blanco, J.A.; Romo, Sebastian; Toro, A.

doi:10.1016/j.wear.2009.01.018

Cited by 146 publications

(58 citation statements)

References 5 publications

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“…According to our previous study [11], the formation of oxides on the coating surface and between intersplats and the reduction of amorphous phase content would contribute to the decrease of the cavitation erosion resistance. The negative effect of the coating porosity on the cavitation erosion resistance has been indicated by other researchers [13,31].…”

Section: Methodsmentioning

confidence: 63%

Effect of Initial Surface Roughness on Cavitation Erosion Resistance of Arc-Sprayed Fe-Based Amorphous/Nanocrystalline Coatings

et al. 2017

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Abstract:The arc spraying process was used to prepare Fe-based amorphous/nanocrystalline coating. The cavitation erosion behaviors of FeNiCrBSiNbW coatings with different surface roughness levels were investigated in distilled water. The results showed that FeNiCrBSiNbW coating adhered well to the substrate, and was compact with porosity of less than 2%. With increasing initial surface roughness, the coatings showed an increase in mass loss of cavitation erosion damage. The amount of pre-existing defects on the initial surface of the coatings was found to be a significant factor for the difference in the cavitation erosion behavior. The cavitation erosion damage for the coatings was a brittle erosion mode. The evolution of the cavitation erosion mechanism of the coatings with the increase of the initial surface roughness was micro-cracks, pits, detachment of fragments, craters, cracks, pullout of the un-melted particle, and massive exfoliations.

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Section: Methodsmentioning

confidence: 63%

Effect of Initial Surface Roughness on Cavitation Erosion Resistance of Arc-Sprayed Fe-Based Amorphous/Nanocrystalline Coatings

et al. 2017

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“…Several deposition methods are used: e.g. the detonation-gun spray process [17], oxy fuel powder (OFP) process [18,19], wire arc spraying (WAS) process [18], high velocity oxy fuel (HVOF) process [19], physical vapour deposition (PVD) [20], plasma and flame spray methods (thermal sprayed coatings) [21], laser surface alloying (LSA) [15]. There are also other methods, which enhancement of slurry wear resitance, e.g.…”

Section: Slurry Erosion Phenomenonmentioning

confidence: 99%

“…5. Examples of the slurry jet devices with stationary specimen (a) [16]and an eroded surface (b) [5] The jet impingement testers can be also divided depending on circulation system into two groups: recurcilation (RC) [46][47][48][49] and nonrecurcilation (NRC) [7,11,31,50]. The advantage of the RC type is the ease of construction and operation, while the advantage of the NRC type is the ability to eliminate influence connected with changing the particle size after collision with the test surface.…”

Section: Jet Type Apparatusmentioning

confidence: 99%

Slurry Erosion – Design of Test Devices

Buszko

Krella

2017

Advances in Materials Science

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Degradation of material caused by impacts of a solid particle (erodent) suspended in a liquid is called slurry erosion and is a major problem in the hydropower and maritime industry. Slurry erosion depends on many factors, e.g. liquid and erodent velocity, size, shape, angle of impact, hardness and number of erodents, and strength of a target material. The various types of test devices have been designed to investigate an effect of mentioned parameters on material resistance. In the paper are described main types of the test apparatus showing their main advantages and disadvantages. Some results of slurry erosion resistance of few groups of materials are also presented.

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“…El proceso de rociado térmico es un tratamiento superficial, que no afecta la microestructura del metal base sobre el cual se deposita, ni tampoco hay una deformación excesiva; por esto las mejoras en las propiedades mecá-nicas son exclusivamente superficiales [16]. La apropiada selección del proceso de rociado térmico está determinado por el material deseado en el recubrimiento, requerimientos de desempeño, tamaño y forma de la pieza, así como factores económicos.…”

Section: Procesos De Rociado Térmicounclassified

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

Arévalo

2014

prospect

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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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Slurry and cavitation erosion resistance of thermal spray coatings

Cited by 146 publications

References 5 publications

Effect of Initial Surface Roughness on Cavitation Erosion Resistance of Arc-Sprayed Fe-Based Amorphous/Nanocrystalline Coatings

Effect of Initial Surface Roughness on Cavitation Erosion Resistance of Arc-Sprayed Fe-Based Amorphous/Nanocrystalline Coatings

Slurry Erosion – Design of Test Devices

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

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