https://doi.org/10.1140/epjs/s11734-025-01975-4
Regular Article
Study on the creep behavior of thick DLC coatings with different C-sp3 bond contents by FCVA combined with HVP technology
1
Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, 100875, Beijing, China
2
Advanced Interdisciplinary Institute of Environment and Ecology, Guangdong Provincial Key Laboratory of Wastewater Information Analysis and Early Warning, Beijing Normal University, 519087, Zhuhai, China
3
Institute of Radiation Technology, Beijing Academy of Science and Technology, 100875, Beijing, China
4
Guangdong Dtech Technology Co., Ltd., 523940, Dongguan, People’s Republic of China
a
zhangxu@bnu.edu.cn
b
caohongshuai@aliyun.com
c
houqingyan@bjast.ac.cn
Received:
30
April
2025
Accepted:
18
September
2025
Published online:
14
October
2025
Amorphous diamond-like carbon materials are extensively employed as protective coatings across various fields due to their exceptional properties. However, the deformation mechanisms during service remain largely unexplored, particularly regarding the relationship between C-sp3 bond content and creep behavior. In this study, thick diamond-like carbon coatings with different C-sp3 bond contents were prepared by combining filtered cathodic vacuum arc deposition and high-voltage pulsed technology, and the creep behavior of diamond-like carbon coatings with different C-sp3 bond contents was investigated under different loading rates and load conditions. The results show that diamond-like carbon coatings with thicknesses with an average thickness of approximately 5 μm and their C-sp3 bond contents (37.71–82.98%) can achieve adjustable by high-voltage pulsed technology during deposition. The density of local areas increases under the loading load and rate, causing a hardening effect on the diamond-like carbon coating to resist creep displacement. Diamond-like carbon coatings with high C-sp3 bond content have lower hardness strain sensitivity and can effectively resist the occurrence of creep behavior. The combination of filtered cathodic vacuum arc deposition and high-voltage pulsed technology enables high C-sp3 bond content compatible with thickness, and the prepared diamond-like carbon coatings effectively resist creep behavior, which provides meaningful guidance for thick diamond-like carbon coatings in long-term service.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
