Version 1
: Received: 10 November 2023 / Approved: 15 November 2023 / Online: 15 November 2023 (13:45:23 CET)
How to cite:
Yu, X.; Wang, Y.; Hou, G.; Ye, J.; Boukherroub, R. Toughness Characterization and Toughening Mechanism of Diamond-like Carbon Films. Preprints2023, 2023111014. https://doi.org/10.20944/preprints202311.1014.v1
Yu, X.; Wang, Y.; Hou, G.; Ye, J.; Boukherroub, R. Toughness Characterization and Toughening Mechanism of Diamond-like Carbon Films. Preprints 2023, 2023111014. https://doi.org/10.20944/preprints202311.1014.v1
Yu, X.; Wang, Y.; Hou, G.; Ye, J.; Boukherroub, R. Toughness Characterization and Toughening Mechanism of Diamond-like Carbon Films. Preprints2023, 2023111014. https://doi.org/10.20944/preprints202311.1014.v1
APA Style
Yu, X., Wang, Y., Hou, G., Ye, J., & Boukherroub, R. (2023). Toughness Characterization and Toughening Mechanism of Diamond-like Carbon Films. Preprints. https://doi.org/10.20944/preprints202311.1014.v1
Chicago/Turabian Style
Yu, X., Jingyan Ye and Rabah Boukherroub. 2023 "Toughness Characterization and Toughening Mechanism of Diamond-like Carbon Films" Preprints. https://doi.org/10.20944/preprints202311.1014.v1
Abstract
Diamond-like carbon (DLC) films have a promising tribological application in green precision manufacturing, but their toughness represents a serious issue in the way of their application perspective. The film thickness is on the micrometer scale and makes conventional methods unsuitable for its toughness characterization. The absence of an accepted method for characterizing the DLC toughness has hindered the related research on the development of toughening methods and understanding the mechanism. This work intends to explore a relatively simple and acceptable characterization method to measure the film toughness. Moreover, toughening mechanisms of DLC films are proposed during the characterization to reveal the toughening mechanism. The toughness can be fully characterized through combining impact toughness and scratch toughness. The impact toughness can be obtained by observing the size of the indentation and the crack state around the indentation in the impact experiment. The scratch toughness could be assessed by combining the scratch morphology and Crack Propagation Resistance (CPRS). The improvement of film toughness should be carried out from two aspects: preventing microcrack initiation and suppressing crack propagation. Appropriate doping of non-carbide metal particles can effectively improve the toughness of the film, and there are seven main factors affecting the toughening of the film. Five toughening mechanisms of non-carbide metals from film preparation to test stage are revealed during the investigation of the change patterns.
Keywords
Diamond-like carbon film; Non-carbide metal doping; Toughness characterization; Energy and stress; Toughening mechanism
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
