Structural and optical properties o plasma-deposited a-C:H:Si:O:N films

Lopes, Juliana Feletto Silveira Costa; Tardelli, Jean; Rangel, Elidiane Cipriano; Durrant, Steven F.

doi:10.1590/0104-1428.210043

Cited by 5 publications

(3 citation statements)

References 42 publications

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“…Galvan et al [37] pointed out that these measures are crucial to determining the toughness and wear resistance of coatings. The notion that a material's wear resistance can be customized by modifying its elastoplastic properties, often indicated by increasing its hardness or reducing its elastic modulus, is widely acknowledged by Lopes et al [38]. H 3 /E 2 is linked with a material's elastic limit.…”

Section: Nanoindentation Testsmentioning

confidence: 99%

Study of the Industrial Application of Diamond-Like Carbon Coatings Deposited on Advanced Tool Steels

Barba,

Claver,

Montalà

et al. 2024

Coatings

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The utilization of diamond-like carbon (DLC) coatings has emerged as a promising strategy to enhance the performance, durability, and functionality of industrial tools and components. Recognized for their exceptional attributes such as hardness, wear resistance, low friction, and biocompatibility, DLC coatings have achieved widespread acclaim for their potential to improve the capabilities of tool steels for different applications. This present study shows a comprehensive investigation into the application of DLC coatings on a diverse range of tool steel substrates, encompassing 1.2379, 1.2358, Caldie, K340, HWS, and Vanadis 4. The main aim is to show the effects of DLC coatings on these substrates and to provide an in-depth analysis of their properties during forming processes. Furthermore, this study explores the practical utilization of DLC-coated tool steel components, with a particular focus on their role in cold forming dies. Additionally, the study reviews the application of duplex treatments involving plasma nitriding to enhance DLC coating performance. To sum up, this study pursues a threefold objective: to investigate DLC coatings’ performance on diverse tool steel substrates; to assess the potential for improvement through nitriding; and to evaluate the behavior of DLC coatings in the cold stamping of S235 steel, which is of great technological and industrial interest to the cold forging sector.

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Section: Nanoindentation Testsmentioning

confidence: 99%

Study of the Industrial Application of Diamond-Like Carbon Coatings Deposited on Advanced Tool Steels

Barba,

Claver,

Montalà

et al. 2024

Coatings

View full text Add to dashboard Cite

show abstract

“…H 3 /E 2 is used as an indicator of toughness given that it is related to the elastic limit of the material. Thus, an improvement in the elastic recovery of the coating, which is related to its toughness, will cause an increase in this ratio [57][58][59]. Furthermore, the relationship between these parameters and wear resistance has also been studied, proving that H/E and H 3 /E 2 are more relevant than just hardness in determining good wear resistance of coatings [56,57,59,60].…”

Section: Nanoindentationmentioning

confidence: 99%

Corrosion and Tribological Performance of Diamond-like Carbon-Coated ZK 60 Magnesium Alloy

Claver,

Fernández,

Santiago

et al. 2023

Coatings

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In this work, hydrogenated and hydrogen-free Diamond-Like Carbon (DLC) coatings were deposited into ZK60 magnesium alloy using the promising coating method High-Power Impulse Magnetron Sputtering (HiPIMS). CrC and WC were used as interlayers of the thin films, and their influence was studied. The structure and composition of the coatings were characterized using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and Raman spectroscopy. Tribological tests, scratch tests, and nanoindentation were performed to obtain information about the mechanical and tribological properties of the coatings. Finally, immersion and electrochemical tests were performed to evaluate the corrosion behavior of the samples. The results showed a homogeneous layer with improved wear resistance, toughness, and hardness in addition to good adhesion to the substrate of the ZK60 magnesium alloy. The hydrogenated DLC coating showed better results that the hydrogen-free thin layer, and relevant differences were observed depending on the interlayer. In this work, the improvement in the tribological and corrosive properties of Mg alloys was studied by using thin layers of DLC and different intermediate layers, achieving similar or even better wear and adhesion values than with thicker layers.

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“…O hexametildisiloxano (HMDSO) é um monômero organo-silício de interesse devido a sua alta taxa de deposição e a habilidade de controlar a estrutura e propriedade de filme formado na superfície pela variação das condições de deposição (Lee & Lee, 1998;Yoshinari et al, 2004). A incorporação de O 2 durante o processo de deposição do HMDSO melhora as propriedades tribológicas do filme (Lopes et al, 2012). Este tratamento promove alterações na molhabilidade da superfície, propiciando alterações na adsorção de proteínas e no comportamento das células Janocha et al, 2001), entretanto o efeito desse tratamento no processo corrosivo do Ti é limitado.…”

Section: Introductionunclassified

Desenvolvimento de superfície de titânio biofuncional por meio da oxidação por plasma eletrolítico e plasma por descarga incandescente para aplicações biomédicas

Beline¹

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Pelo dom da vida, pela saúde e por minha família. Obrigada, Senhor, por iluminar o meu caminho e por todas as realizações diárias que tem me concedido. Sei que Sua Graça se faz presente em todos os momentos de minha vida e que nunca permite que me falte nada. Obrigada por me dar mais do que mereço. Aos meus pais Eva e AntônioAos meus pais, que abdicaram de muitas de suas vontades para que eu e minha irmã alcançássemos nossos sonhos. A vocês devo tudo o que sou hoje. Obrigada pelo exemplo de simplicidade e humildade e pelo amor incondicional que me deram. Agradeço a Deus todos os dias por ter vocês em minha vida. A minha irmã ThalitaA minha irmã e melhor amiga Thalita, por todo o carinho e motivação nesta jornada, sempre com alguma palavra de força e coragem para me animar. Obrigada por tudo. Amo você! Ao meu namorado LincolnAo meu namorado Lincoln, que sempre esteve ao meu lado desde a época do colegial. Com certeza as suas palavras de incentivo foram fundamentais para que eu tivesse mais força para alcançar todos os meus objetivos. Muito obrigada por seu amor, paciência, compreensão e todo o apoio que me deu até hoje. Te amo! AgradecimentosEspecialmente ao meu orientador Prof. Dr. Valentim Adelino Ricardo Barão. Exemplo de professor, pesquisador e pessoa. Sou eternamente grata pela oportunidade de ser sua orientada e crescer pessoal e profissionalmente ao seu lado. Muito obrigada por todo o suporte, paciência, zelo e incentivo. Que Deus continue a abençoar imensamente a sua vida.A Universidade Estadual de Campinas -UNICAMP, na pessoa do Magnífico Reitor, Prof. Dr. José Tadeu Jorge, pelo meu mestrado nesta instituição.A Faculdade de Odontologia de Piracicaba -UNICAMP, na pessoa do seu Diretor Prof. Dr.

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Structural and optical properties o plasma-deposited a-C:H:Si:O:N films

Cited by 5 publications

References 42 publications

Study of the Industrial Application of Diamond-Like Carbon Coatings Deposited on Advanced Tool Steels

Study of the Industrial Application of Diamond-Like Carbon Coatings Deposited on Advanced Tool Steels

Corrosion and Tribological Performance of Diamond-like Carbon-Coated ZK 60 Magnesium Alloy

Desenvolvimento de superfície de titânio biofuncional por meio da oxidação por plasma eletrolítico e plasma por descarga incandescente para aplicações biomédicas

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