Search Results - "Murasawa, Koki"

Effects of substrate temperature and intermediate layer on adhesion, structural and mechanical properties of coaxial arc plasma deposition grown nanodiamond composite films on Si substrates by Ali, Ali M., Egiza, Mohamed, Murasawa, Koki, Sugita, Hiroaki, Deckert-Gaudig, Tanja, Deckert, Volker, Yoshitake, Tsuyoshi

“…Low-temperature fabrication of nanodiamond films on untreated silicon substrates, which are preferred substrates and widely employed in industry, can extend…”
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Negative bias effects on deposition and mechanical properties of ultrananocrystalline diamond/amorphous carbon composite films deposited on cemented carbide substrates by coaxial arc plasma by Ali, Ali M., Egiza, Mohamed, Murasawa, Koki, Fukui, Yasuo, Gonda, Hidenobu, Sakurai, Masatoshi, Yoshitake, Tsuyoshi

“…Ultrananocrystalline diamond/amorphous carbon composite (UNCD/a-C) films were deposited on negatively biased cemented carbide (WC-Co) substrates by coaxial arc…”
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Hard coating of ultrananocrystalline diamond/nonhydrogenated amorphous carbon composite films on cemented tungsten carbide by coaxial arc plasma deposition by Naragino, Hiroshi, Egiza, Mohamed, Tominaga, Aki, Murasawa, Koki, Gonda, Hidenobu, Sakurai, Masatoshi, Yoshitake, Tsuyoshi

“…Ultrananocrystalline diamond (UNCD)/nonhydrogenated amorphous carbon (a-C) composite (UNCD/a-C) films were deposited on cemented carbide containing Co by…”
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Clean and durable thick nanodiamond composite hard coating deposited on cemented carbide towards sustainable machining: Eco-friendly fabrication, characterization, and 3-E analysis by Egiza, Mohamed, Diab, Mohamed Ragab, Ali, Ali M., Murasawa, Koki, Yoshitake, Tsuyoshi

“…This research explores a sustainable approach for fabricating high-performance nanodiamond composite (NDC) hard coatings for dry machining. Aiming to address…”
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Room-temperature hard coating of ultrananocrystalline diamond/nonhydrogenated amorphous carbon composite films on tungsten carbide by coaxial arc plasma deposition by Naragino, Hiroshi, Egiza, Mohamed, Tominaga, Aki, Murasawa, Koki, Gonda, Hidenobu, Sakurai, Masatoshi, Yoshitake, Tsuyoshi

“…Ultrananocrystalline diamond (UNCD)/nonhydrogenated amorphous carbon (a-C) composite films were deposited on unheated WC containing Co by coaxial arc plasma…”
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Sustainable super-hard and thick nanodiamond composite film deposited on cemented carbide substrates with an interfacial Al-interlayer by Egiza, Mohamed, Ragab Diab, Mohamed, Ali, Ali M., Murasawa, Koki, Yoshitake, Tsuyoshi

“…•Super-hard NDC films showcase 58 GPa hardness at 10 µm thickness.•Al interlayer boosts adhesion, suppressing Co catalytic effects for improved…”
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Wear-resistant and adherent nanodiamond composite thin film for durable and sustainable silicon carbide mechanical seals by Egiza, Mohamed, Diab, Mohamed Ragab, Zia, Abdul Wasy, Murasawa, Koki, Faisal, Nadimul, Yoshitake, Tsuyoshi

“…In response to environmental concerns, there is a growing demand for durable and sustainable mechanical seals, particularly in high-risk industries like…”
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Influence of droplet-free ta-C coatings and lubrication conditions on tribological performance and mechanical characteristics of WC−Co by Murasawa, Koki, Diab, Mohamed Ragab, Wang, Mei, Naragino, Hiroshi, Yoshitake, Tsuyoshi, Egiza, Mohamed

“…•Arc ion plating deposited droplet-free ta-C coatings with high adhesion (Lcr = 41 N).•The hardness of ta-C coatings is 62 % higher than that of WC−Co,…”
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Wear-resistant and stable low-friction nanodiamond composite superhard coatings against Al2O3 counter-body in dry condition by Diab, Mohamed Ragab, Murasawa, Koki, Ibrahim, Ahmed Mohamed Mahmoud, Naragino, Hiroshi, Yoshitake, Tsuyoshi, Egiza, Mohamed

“…Conventional machining lubricants pose environmental hazards and increase production costs. This study addresses this challenge by investigating nanodiamond…”
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Synthesis and comprehensive synchrotron-based structural analysis of Si-doped nanodiamond composite films deposited on cemented carbide by Egiza, Mohamed, Ali, Ali M., Diab, Mohamed R., Hemaya, Nader, Murasawa, Koki, Yoshitake, Tsuyoshi

“…Si-doped nanodiamond composite (NDC) films were deposited on unheated WC − Co substrates by coaxial arc plasma deposition for advanced cutting tools…”
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Eco-friendly thick and wear-resistant nanodiamond composite hard coatings deposited on WC–Co substrates by Diab, Mohamed Ragab, Egiza, Mohamed, Murasawa, Koki, Naragino, Hiroshi, El-Shaer, Abdelhamid, Yoshitake, Tsuyoshi

“…Nanodiamond composite (NDC) films, synthesized using an environmentally friendly PVD coaxial arc plasma deposition technique on commercial cemented carbide (Co…”
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B-doped nanodiamond composite hard coatings deposited on cemented carbide: Mechanical, structural, and tribological properties by Egiza, Mohamed, Ali, Ali M., Murasawa, Koki, Yoshitake, Tsuyoshi

“…Herein, the effects of B doping on the mechanical, structural, and tribological properties of nanodiamond composite (NDC) coatings deposited on cemented…”
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Disclosing mechanical and specific structural characteristics of thick and adherent nanodiamond composite hard coating deposited on WC−Co substrates by Murasawa, Koki, Diab, Mohamed R., Atta, Hoda, Naragino, Hiroshi, El-Shaer, Abdelhamid, Yoshitake, Tsuyoshi, Egiza, Mohamed

“…Nanodiamond composite (NDC) films, with a notable hardness of 65 GPa and a substantial thickness of 10 µm, were successfully fabricated on unheated WC−Co…”
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Revealing mechanical and structural properties of Si-doped nanodiamond composite films through applied biasing voltages on WC − Co substrates by Diab, Mohamed Ragab, Egiza, Mohamed, Murasawa, Koki, Ohmagari, Shinya, Naragino, Hiroshi, Yoshitake, Tsuyoshi

“…Silicon-doped nanodiamond composite (Si-NDC) films hold significant promise for advancing cutting tool performance in demanding applications. These films,…”
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