Process and microstructure simulation in thermal spraying

Wilden, J.; Frank, H.; Bergmann, Jean Pierre

doi:10.1016/j.surfcoat.2006.04.059

Cited by 19 publications

(6 citation statements)

References 1 publication

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“…This is different from the result of the former studies. 29 In addition, this study also showed that when compared with those sprayed at a low gas flow rate, HA coatings exhibit higher abrasive wear resistance at a high flow rate because of the higher cohesion bonding among the splats and low porosity. 30…”

Section: Gas Flow Ratementioning

confidence: 55%

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Effect of Plasma Spraying Parameters on the Sprayed Hydroxyapatite Coating

Wang

Chen

et al. 2007

Surf. Rev. Lett.

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As the most favorable technology, plasma spray has been used to produce the hydroxyapatite (HA) coatings with the desired phase, high crystallinity, adequate porosity, and good biocompatibility. The characteristics of the HA coating are affected by many variables of the fabricating process, such as the starting particle size, spraying distance, gas flow rate, and electric arc power, etc. This paper reviews the effect of the plasma spraying parameters on the morphology and microstructure of the HA coating, and introduces several typical HA coatings fabricated with different plasma spraying parameters.

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Section: Gas Flow Ratementioning

confidence: 55%

“…It is because the higher power leads to a significant increase in the temperature of the nozzle due to the higher energy. 29 Many studies have been carried out to investigate the effect of it on the coating morphology and microstructure. For example, Dyshlovenkoas et al 12 related coatings porosity to arc powder.…”

Section: Electric Arc Powermentioning

confidence: 99%

Effect of Plasma Spraying Parameters on the Sprayed Hydroxyapatite Coating

Wang

Chen

et al. 2007

Surf. Rev. Lett.

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“…The varied parameters were the carrier-gas flow rate, the injection angle, and the standoff distance. Specifically, the carrier-gas flow rate and the injection angle have a major effect on the injection of the spray-dried agglomerates inside the plasma jet 36,37 ; with the larger gas-flow rate of 3.5 SLPM and/or with the smaller injection angle of 901 (Table I), most agglomerates are injected into the hot core zone of the plasma, but with a lower flow rate of 2.5 SLPM and/or with a higher injection angle of 1051, the agglomerates are not injected as deep and cannot reach the core zone. Accordingly, coating A, which was deposited using the larger carrier-gas flow rate and the smaller injection angle, contains the smallest amount of retained crystalline Ba hexaferrite (Table II), because the agglomerates delivered into the hot core zone of the plasma were more efficiently melted.…”

Section: Resultsmentioning

confidence: 99%

Magnetic Phase Formation in CoTi‐Substituted Ba Hexaferrite Coatings Prepared with Atmospheric Plasma Spraying

Lisjak

Bolelli

Lusvarghi

et al. 2010

Journal of the American Ceramic Society

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Thick coatings of CoTi-substituted Ba hexaferrite with the\ud nominal composition BaCoTiFe10O19 were prepared using atmospheric\ud plasma-spraying technology. The coatings were prepared\ud from prereacted powders of the desired composition. The\ud as-deposited coatings showed a high degree of crystallinity. A\ud detailed investigation of the coatings’ phase compositions was\ud conducted with micro-Raman spectroscopy and energy-dispersive\ud X-ray spectroscopy. Two magnetic ferrite phases, CoTisubstituted\ud Ba hexaferrite and Co ferrite, were identified in the\ud coatings. An X-ray powder-diffraction analysis and a quantitative\ud structural analysis based on Rietveld refinement showed that\ud the mass ratio of the two phases and their chemical composition\ud varied with respect to the spraying parameters. Consequently,\ud the static and microwave magnetic properties of the as-sprayed\ud coatings also varied. We were able to explain the formation\ud of the two ferrite phases based on the interplay between the\ud p..

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“…[9][10][11][12] The thermal spray processes, in general, can be described by energy input, heating and acceleration, deformation of the substrate, nucleation and solidification and formation of the coating. 13 Spray by conventional fire (Flame Spray), also known as "oxyacetylene fire" process, is a simple thermal spray process of low cost. In brief, this process works at low temperatures (as in the case of the present study), the gun being normally kept at 30 cm from the filament, and temperature in the composite reaching approximately 75 � C. Speed of metal particles, which are sprayed, during the deposition are normally kept low in comparison to other processes, such as the electric arc.…”

Section: Introductionmentioning

confidence: 99%

Aluminum and copper deposition through the process of thermal flame spray on polypropylene-pine wood fiber composite filaments and their applications

Veroneze

Flores-Sahagun

Paredes

et al. 2021

Journal of Composite Materials

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This paper presents a study about polypropylene-pine wood composites, both as filaments and products, coated with aluminum (Al) or copper (Cu), obtained through flame thermal spray process after subjecting the composites to thermal treatments in the second and third step of the study. Results revealed that a previous aluminum layer was needed in order to obtain copper coatings on the composites. The physical and mechanical properties of both metal coated composite filaments were also evaluated and compared with the uncoated composite filaments with and without heat treating these. Consequently, it was observed that the nature of the coating adhesion on the substrates was mechanical, and therefore abrasion blasting of filaments or the use of a higher wood fiber content in the composite improved the Al or Cu adhesion. Also, it was observed that extruded wood fiber/PP filaments should not be cooled in water because pieces might be molded directly once the moisture affects the metal coatings adhesion onto the substrates.

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Process and microstructure simulation in thermal spraying

Cited by 19 publications

References 1 publication

Effect of Plasma Spraying Parameters on the Sprayed Hydroxyapatite Coating

Effect of Plasma Spraying Parameters on the Sprayed Hydroxyapatite Coating

Magnetic Phase Formation in CoTi‐Substituted Ba Hexaferrite Coatings Prepared with Atmospheric Plasma Spraying

Aluminum and copper deposition through the process of thermal flame spray on polypropylene-pine wood fiber composite filaments and their applications

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