Aluminum coatings via kinetic spray with relatively large powder particles

Steenkiste, Thomas H. Van; Smith, J. R.; Teets, Richard E.

doi:10.1016/s0257-8972(02)00018-x

Cited by 345 publications

(169 citation statements)

References 8 publications

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“…Para una deposición adecuada se requiere, dependiendo del material, una cierta velocidad mínima o crítica para que haya adhesión, tal como se ilustra en la figura 3; este valor depende significativamente de las propiedades termomecánicas del polvo y del sustrato, morfología y tamaño de partícula [12][13][14] . Por debajo de esta velocidad crítica, las partículas que impactan generan solamente una erosión del sustrato [5 y 6] ; por encima, la deposición de las partículas mejora hasta un máximo que, en algunos casos, puede superar el 95 %.…”

Section: La Proyección Fría (Cold Gas Spray Cgs)unclassified

Recubrimientos micro/nanoestructurados de aleaciones ligeras mediante proyección fría para la protección y reparación de componentes de elevado valor añadido: Estado del arte

2013

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The Cold Gas Spray -CGS technique has greatly attracted the attention of the researchers in the last decade due to advantages compared to other conventional thermal spray processes. It presents outstanding characteristics such as high density coatings and absence of thermal degradation (oxidation or phase transformation). In addition, CGS is an efficient and green technology. This paper presents a bibliographic review related to micro/nanostructured aluminium-based coatings of by CGS on light alloy substrates. It provides an overview of the feasibility of using the Cold Gas Spray as a technique for the protection, recovery and repair of high value-added components, especially those made of light alloys (aluminium and magnesium base) which, by their low density and mechanical properties, are widely used in several industrial sectors such as transport, aerospace and power generation.

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Section: La Proyección Fría (Cold Gas Spray Cgs)unclassified

Recubrimientos micro/nanoestructurados de aleaciones ligeras mediante proyección fría para la protección y reparación de componentes de elevado valor añadido: Estado del arte

2013

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“…Because the coating to substrate bond is often the weakest link in thermal spray coating systems, the ability of selfbonding materials to give a tenacious, reliable bond to the substrate greatly enhances the adhesion and therefore the performance of entire coating systems. While a number of these materials exist, the most popular and widely used is the nickel-aluminium powders (Pawlowski, 2008;Steenkiste et al;. The reason for the good adhesion of these powders on non-pretreated surfaces (preheated only at 80-100°C to eliminate condensation), is the nascent heat evolved by the exothermic reaction of Ni and Al which form nickel-aluminide during spraying 1997).…”

Section: Intermetallic Compoundsmentioning

confidence: 99%

A Solid State Approach to Synthesis Advanced Nanomaterials for Thermal Spray Applications

Movahedi¹

2012

Advanced Plasma Spray Applications

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“…The closest information is for the study of cold spraying, which gives more kinetic energy and a small amount of heat to the sprayed particles. Experimental observation [13][14][15][16] and numerical simulation [17][18][19] of the solid particle deformation in cold spraying shows that bonding is the result of extensive plastic deformation and related phenomena at the impact interface. Quantitative analyses [17][18][19] of the relationship between the deposition efficiencies and particle impact velocities indicate a critical particle velocity for successful bonding.…”

Section: Introductionmentioning

confidence: 99%

Bonding Mechanism from the Impact of Thermally Sprayed Solid Particles

Kamnis

2009

Metall Mater Trans A

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Power particles are mainly in solid state prior to impact on substrates from high velocity oxyfuel (HVOF) thermal spraying. The bonding between particles and substrates is critical to ensure the quality of coating. Finite element analysis (FEA) models are developed to simulate the impingement process of solid particle impact on substrates. This numerical study examines the bonding mechanism between particles and substrates and establishes the critical particle impact parameters for bonding. Considering the morphology of particles, the shear-instabilitybased method is applied to all the particles, and the energy-based method is employed only for spherical particles. The particles are given the properties of widely used WC-Co powder for HVOF thermally sprayed coatings. The numerical results confirm that in the HVOF process, the kinetic energy of the particle prior to impact plays the most dominant role in particle stress localization and melting of the interfacial contact region. The critical impact parameters, such as particle velocity and temperature, are shown to be affected by the shape of particles, while higher impact velocity is required for highly nonspherical powder.

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Aluminum coatings via kinetic spray with relatively large powder particles

Cited by 345 publications

References 8 publications

Recubrimientos micro/nanoestructurados de aleaciones ligeras mediante proyección fría para la protección y reparación de componentes de elevado valor añadido: Estado del arte

Recubrimientos micro/nanoestructurados de aleaciones ligeras mediante proyección fría para la protección y reparación de componentes de elevado valor añadido: Estado del arte

A Solid State Approach to Synthesis Advanced Nanomaterials for Thermal Spray Applications

Bonding Mechanism from the Impact of Thermally Sprayed Solid Particles

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