Mechanical characterization of segment-structured hydrogen-free a-C films fabricated by filtered cathodic vacuum arc method

Kondo, Shu; Liza, Shahira; Ohtake, Naoto; Akasaka, Hiroki; Matsuo, Makoto; Iwamoto, Y.

doi:10.1016/j.surfcoat.2015.07.069

Cited by 9 publications

(3 citation statements)

References 23 publications

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“…Amorphous carbon films containing DLC films are synthesized by various methods such as chemical vapor deposition (CVD), which includes plasma-enhanced CVD [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ], electron cyclotron resonance (ECR) plasma CVD [ 30 ], plasma-based ion implantation and deposition (PBII&D) [ 31 , 32 ], and physical vapor deposition, which includes ionized evaporation [ 33 ], sputtering [ 34 , 35 ], unbalanced magnetron sputtering (UBMS) [ 36 , 37 ], ECR sputtering [ 38 , 39 ], high-power impulse magnetron sputtering (HiPIMS) [ 40 , 41 ], filtered cathodic vacuum arc (FCVA) [ 42 , 43 , 44 , 45 ], ion-beam deposition (IBD) [ 5 , 46 , 47 , 48 ], arc ion plating (AIP) [ 49 , 50 ], pulsed laser deposition (PLD) [ 51 ], and laser arc deposition [ 52 , 53 ]. Many of the DLC films produced by these methods have deviated from the DLC regions on the ternary diagrams reported to date.…”

Section: Introductionmentioning

confidence: 99%

Properties and Classification of Diamond-Like Carbon Films

Hiratsuka²,

et al. 2021

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Diamond-like carbon (DLC) films have been extensively applied in industries owing to their excellent characteristics such as high hardness. In particular, there is a growing demand for their use as protective films for mechanical parts owing to their excellent wear resistance and low friction coefficient. DLC films have been deposited by various methods and many deviate from the DLC regions present in the ternary diagrams proposed for sp3 covalent carbon, sp2 covalent carbon, and hydrogen. Consequently, redefining the DLC region on ternary diagrams using DLC coatings for mechanical and electrical components is urgently required. Therefore, we investigate the sp3 ratio, hydrogen content, and other properties of 74 types of amorphous carbon films and present the classification of amorphous carbon films, including DLC. We measured the sp3 ratios and hydrogen content using near-edge X-ray absorption fine structure and Rutherford backscattering-elastic recoil detection analysis under unified conditions. Amorphous carbon films were widely found with nonuniform distribution. The number of carbon atoms in the sp3 covalent carbon without bonding with hydrogen and the logarithm of the hydrogen content were inversely proportional. Further, we elucidated the DLC regions on the ternary diagram, classified the amorphous carbon films, and summarized the characteristics and applications of each type of DLC.

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Section: Introductionmentioning

confidence: 99%

Properties and Classification of Diamond-Like Carbon Films

Hiratsuka²,

et al. 2021

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“…30) Four DLC films were made using the filtered cathodic vacuum arc (FCVA) method. 31) A graphite cathode with a purity of 99.99% was used to generate carbon plasma. The deposition technique is described elsewhere.…”

Section: Methodsmentioning

confidence: 99%

Investigation of vacancy-type defects in diamond-like carbon films using slow positron beam

Kanda,

Mishima,

Akasaka

et al. 2024

Jpn. J. Appl. Phys.

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Positron annihilation spectroscopy (PAS) was conducted to investigate the vacancy-type defects of diamond-like carbon (DLC) films. From the Doppler broadening measurements of the γ-rays produced by annihilation and positron annihilation lifetime (PAL) using a slow positron beam on diamond-like carbon (DLC) films deposited by various deposition methods and conditions, it was found that there is a good correlation between the S-parameter that was obtained by Doppler broadening, and PAL. The result of PAL correlates well with film density and hardness, indicating that PAL measurement can be used as an indicator of these film properties. The hydrogen content in the DLC film is roughly proportional to the PAL. However, there were also cases observed where the PAL differed greatly even with almost the same hydrogen content and the sp2/(sp2+sp3) ratio of carbon in DLC films has no direct relationship with PAL.

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“…Shahira Liza Kamis ve ark. [57], çalışmalarında silikon ve SUS403 substratları üzerinde biriktirilen segment yapılı hidrojen içermeyen -C filmlerin mekanik ve tribolojik davranışları incelenmiştir ve yapılandırılmış hidrojen içermeyen -C filmleri ile karşılaştırılmıştır. Yapılandırılmış hidrojen içermeyen -C filmleri, filtreli katodik vakum ark (FCVA) sistemi ile metal kafesler kullanılarak imal edilmiştir.…”

Section: Tri̇boloji̇ İle İlgi̇li̇ Yapilmiş Olan çAlişmalarunclassified

Evaluation of Biomaterials and Implant Production Process in Terms of Biotribology

Akça

İyibilgin

Gepek

2020

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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ÖZET Triboloji, makinelerde, birbiri ile çalışan parçalarda ve yüzeylerde sıklıkla karşılaşılan sürtünme, aşınma ve yağlama konularını inceleyen araştırma alanları arasında yeralmaktadır. Biyotriboloji ise, tribolojik etkilerin canlılar üzerindeki uygulamaları olarak tanımlanabilir. Bu kavram, özellikle implant tasarımı, imalatı ve uygulamaları sırasında göz önünde bulundurulması gereken en önemli etkenler arasında yer almaktadır. Canlılar üzerinde uygulanması ve geliştirilmesi planlanan implantların tasarımları çok iyi olsa bile, biyotriboloji konusundaki testler ve analizler gerçekleştirilmeden başarı elde edilmesi mümkün olmamaktadır. Bu nedenle, biyotriboloji konusunun daha iyi anlaşılması ve bu alanda çalışan araştırmacılara ışık tutarak yol göstermesi amacıyla bu makale hazırlanmıştır. Makalede, son 20 yılda biyotriboloji konusunda gerçekleştirilmiş teorik ve deneysel çalışmalar incelenerek değerlendirilmiş ve geleceğe bakış sunulmuştur. ABSTRACTTribology is one of the research areas that examine the friction, wear and lubrication frequently encountered in machines, interlocking parts and surfaces. Biotribology can be defined as the applications of tribological effects on living things. This concept is one of the most important factors that should be considered during implant design, manufacturing and applications. Even if the designs of the implants planned to be developed and implemented on living organisms are very good, it is not possible to achieve success without carrying out tests and analyses on biotribology. Therefore, this article has been prepared to better understand the subject of biotribology and to guide the researchers working in this field. In this article, the theoretical and experimental studies about biotribology in the last 15 years have been reviewed and future projections have been given.

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Mechanical characterization of segment-structured hydrogen-free a-C films fabricated by filtered cathodic vacuum arc method

Cited by 9 publications

References 23 publications

Properties and Classification of Diamond-Like Carbon Films

Properties and Classification of Diamond-Like Carbon Films

Investigation of vacancy-type defects in diamond-like carbon films using slow positron beam

Evaluation of Biomaterials and Implant Production Process in Terms of Biotribology

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