Improvement of flame spraying PEEK coating characteristics using lasers

Soveja, Adriana; Sallamand, Pierre; Liao, Hanlin; Costil, S.

doi:10.1016/j.jmatprotec.2010.08.002

Cited by 18 publications

(8 citation statements)

References 20 publications

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“…PEEK PA 12 A temperatura de pré-aquecimento dos substratos antes da aspersão foi determinada por pré-testes e em consonância com por trabalhos anteriores [10]. A distância de aspersão (SODStand Off Distance) de 85 mm foi definida após alguns testes preliminares.…”

Section: Aspersão a Chama (Terodyn 2000)unclassified

Estudo das características de revestimentos poliméricos aplicados por aspersão térmica para proteção contra desgaste e corrosão de substratos metálicos

Lima

Souza

Camargo³

2012

Soldag. insp.

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Resumo Revestimentos poliméricos vêm sendo crescentemente considerados como solução na proteção de materiais metálicos contra corrosão IntroduçãoA aspersão térmica é uma tecnologia de aplicação de revestimentos utilizada em diversas áreas da engenharia. Seus diferentes métodos de aplicação e a grande variedade de materiais utilizados fazem desta tecnologia uma das mais conceituadas para soluções relacionadas a desgaste, corrosão e degradação térmica, entre outras aplicações. Sua utilização é ampla, tanto na fabricação, como na manutenção de peças e componentes. Com a grande diversificação e o crescente desenvolvimento relacionado aos materiais para deposição, a combinação de diferentes métodos de deposição para diferentes tipos de materiais abre larga perspectiva para aplicações em projetos de engenharia. É necessário, na perspectiva do projeto, levar em conta que o processo é sinergístico, ou seja, a combinação de fatores do processo produz um efeito muito maior que o esperado quando considerados tais fatores individualmente [1,2].Esta tecnologia de revestimentos é caracterizada por alta adesão, compatibilidade para uso com diversos tipos de materiais de substrato e baixa porosidade. As diferentes variações das técnicas de aspersão térmica permitem que se escolha aquela mais compatível com as restrições do substrato, como sua temperatura e espessura. Esses revestimentos e substratos possuem características únicas quanto a dilatação térmica, ponto de fusão e compatibilidade química durante a deposição. Materiais que se decompõe facilmente tendem a ser pobres candidatos a revestimentos. Assim, a maioria dos metais, ligas, todas as formas de cerâmica e alguns polímeros são utilizados na aspersão térmica [2,3,4].As variações básicas do processo ocorrem nos materiais de aspersão utilizados, no método de aquecimento e no método de propulsão dos materiais no substrato. Muitos metais, cerâmicas,

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Section: Aspersão a Chama (Terodyn 2000)unclassified

Estudo das características de revestimentos poliméricos aplicados por aspersão térmica para proteção contra desgaste e corrosão de substratos metálicos

Lima

Souza

Camargo³

2012

Soldag. insp.

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“…The viability of lasers for this application is still unclear due to the varying absorption coefficients of polymers for different laser wavelengths. Absorption occurs if the frequency of the incident photons corresponds to the frequency associated with the transition energy of irradiated molecules ( Ref 14,149,[155][156][157][158]. Part of the absorbed energy is transformed into thermal energy, which leads to coating melting.…”

Section: Laser Posttreatments: Densification Of Peek Coating On 304l mentioning

confidence: 99%

“…Current research in laser densification focuses on optimizing the main laser operating parameters of three types of lasers: Nd:YAG laser, CO 2 laser, and diode laser. Studies on densification of polymers coatings (Ref 13,149,156) have shown that with CO 2 laser, the incident laser beam is easily absorbed by polymers, whereas most of them are transparent at the wavelength of Nd:YAG laser. Diode laser beam radiation is less absorbed by most organic polymers, leading to a greater heating of the coating/substrate interface which results in improved adhesion.…”

Section: Laser Posttreatments: Densification Of Peek Coating On 304l mentioning

confidence: 99%

“…For instance, PEEK response to different laser beam radiations depends on the type of laser used, which is due to PEEKÕs laser-dependant transmission factor: 50% for Nd:YAG laser, 10% for CO 2 laser, and 80% for diode laser (Ref 13,149). Figure 16 shows the microstructure of PEEK coatings after densification using these three types of lasers.…”

Section: Laser Posttreatments: Densification Of Peek Coating On 304l mentioning

confidence: 99%

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Pre-/During-/Post-Laser Processes to Enhance the Adhesion and Mechanical Properties of Thermal-Sprayed Coatings with a Reduced Environmental Impact

et al. 2011

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Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication Citation for published version (APA):Garcia -Alonso, D., Serres, N., Demian, C., Costil, S., Langlade, C., & Coddet, C. (2011). Pre-/during-/post-laser processes to enhance the adhesion and mechanical properties of thermal sprayed coatings with a reduced environmental impact. Journal of Thermal Spray Technology, 20(4), 719-735. DOI: 10.1007/s11666-011-9629-x General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Lasers have been used to improve the ultimate performance of thermal spray coatings for specific applications, but the full potential of additional laser treatments must be further explored. Laser treatments (auxiliary processes) can be applied before, during or after thermal spraying (main process), leading to a wide range of coating improvements (microstructure, adhesion, etc.). The aim of this review is to introduce the most significant laser treatments for thermal spray applications. The potential improvements for thermal spray coatings are illustrated by a selection of representative research cases. Laser pretreatments (ablation and texturing) promote coating/substrate adhesion and are suitable to prepare the surface of sensitive substrates such as aluminum, titanium, or magnesium alloys. The use of these techniques, which leads to several benefits such as surfaces free of grit-particle inclusions, directly improves the quality of coatings. Laser treatments applied simultaneously during the spraying process deeply modify the coatings microstructure. These hybrid technologies allow in situ laser melting of coatings, resu...

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“…Polyether ether ketone (PEEK) is an excellent but expensive polymeric material, which is particularly useful to protect metallic surfaces in erosive–corrosive environments, especially in the presence of relatively high temperature . PEEK might be deposited on metal substrates by a number of different technologies as thermal spraying, printing, or electrophoretic deposition . These routes always imply time‐consuming procedures, are often extremely expensive, and require specific equipments.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and characterization of polyether ether ketone/methyl phenyl polysiloxane composite coatings

Barletta

Gisario

Puopolo

et al. 2016

J of Applied Polymer Sci

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In this work, manufacturing and characterization of single-and multilayer polyether ether ketone (PEEK)-reinforced coatings were investigated. Hybrid composites of thermoplastic reinforcing agents in a thermoset resin was, therefore, achieved by dispersing large PEEK particles (85 lm diameter) in methyl phenyl polysiloxane (MPP). First, mechanism of formation of the polymeric networks during MPP curing at different temperatures (250-400 8C) was analyzed. The different arrangements of the PEEK powders inside the cross-linked network of the MPP resin were, thus, disclosed. Second, the effect of process parameters on visual appearance, morphological features, and mechanical response of the composite coatings was evaluated by contact gauge profilometry, scanning electron microscopy, IR spectrometry, and microscratch indentations. Moderate temperature curing (250 8C > T > 300 8C) of the composite coatings led to polysiloxane resins harder, well adhered on the metal and able to retain better the PEEK reinforce. Further increase in curing temperature (350 and 400 8C) might embrittle the polysiloxane resin, with the PEEK powders in it partially attenuating the loss of properties of the composite coating.

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Improvement of flame spraying PEEK coating characteristics using lasers

Cited by 18 publications

References 20 publications

Estudo das características de revestimentos poliméricos aplicados por aspersão térmica para proteção contra desgaste e corrosão de substratos metálicos

Estudo das características de revestimentos poliméricos aplicados por aspersão térmica para proteção contra desgaste e corrosão de substratos metálicos

Pre-/During-/Post-Laser Processes to Enhance the Adhesion and Mechanical Properties of Thermal-Sprayed Coatings with a Reduced Environmental Impact

Manufacturing and characterization of polyether ether ketone/methyl phenyl polysiloxane composite coatings

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