@inproceedings{8ae5a14c8bb24083a7d0b30a57ee86da,
title = "Massive nitrogen super-saturation into CoCrMo Alloys for improvement of tribological performance",
abstract = "The cobalt-chromium-molybdenum (CoCrMo) superalloys have been utilized in the dental, knee, and hip arthroplasty applications because of their unique combination of high strength, high wear and corrosion resistance. A massive nitrogen supersaturation (MNS) process was proposed as a surface treatment to improve these strength, hardness and ductility, further needed for hip replacement and dental prosthesis. CoCrMo disc specimens were prepared for plasma immersion nitriding at 673 K for 21.6 ks by 50 Pa. The nitrogen solute uniformly distributed in the MNS-layer with the average content of 5 mass%. Higher surface hardness than 1550 HV was attained under application of 10 N. The maximum friction coefficient was halved before and after MNS and this low frictional state with μ< 0.45 was preserved although the sliding condition by 0.1 m/s.",
keywords = "Cocrmo Alloys, Low Friction and Wear, Massive Nitrogen Interstitials, Plasma Nitriding",
author = "Tatsuhiko Aizawa and Tatsuya Funazuka and Tomomi Shiratori and Yohei Suzuki",
note = "Publisher Copyright: {\textcopyright} 2024, Association of American Publishers. All rights reserved.; 27th International ESAFORM Conference on Material Forming, ESAFORM 2024 ; Conference date: 24-04-2024 Through 26-04-2024",
year = "2024",
doi = "10.21741/9781644903131-139",
language = "英語",
isbn = "9781644903131",
series = "Materials Research Proceedings",
publisher = "Association of American Publishers",
pages = "1248--1258",
editor = "Araujo, {Anna Carla} and Arthur Cantarel and France Chabert and Adrian Korycki and Philippe Olivier and Fabrice Schmidt",
booktitle = "Material Forming, ESAFORM 2024",
}