A comparative study of duty cycle and argon / methane flow ratio effect on the tribological behavior of DLC coatings over nitrided Astaloy Mo-based steel

Ghasemi, Mahsa Haji; Ghasemi, Behrooz; Semnani, Hamid Reza Mohamadian; Erfanmanesh, Mohammad

doi:10.1016/j.ceramint.2021.01.104

Cited by 9 publications

(1 citation statement)

References 26 publications

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“…The differences in stresses, hardness, roughness and phase composition of the outer zone of the nitride layer at the flat surface and on the edge of the sample may result in differences in adhesion of the coating to the substrate after RFCVD2 process. Ghasemi et al [40,52] have proved that, among physical, chemical and mechanical factors affecting the adhesion of the coating to the substrate, mechanical bonding is the most important. Decreasing of the surface roughness may adversely affect the adhesion of the coating to the Fig.…”

Section: Discussionmentioning

confidence: 99%

The Microstructure and Properties of Carbon Thin Films on Nanobainitic Steel

Skołek

Meredyk

Tarnowski

et al. 2021

Metall Mater Trans A

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The aim of this study was to assess whether it is possible to produce a high adhesive carbon coating by applying low-temperature RFCVD and glow discharge methods on nanobainitic X37CrMoV5-1 steel with and without nitrided sublayer. For this purpose, several methods of investigation were used: observations of coating morphology by scanning electron microscopy (SEM), analysis of bonds found in coatings (Raman spectroscopy), microhardness tests and adhesion of coatings (Scratch tests). Our research has shown that low-temperature RFCVD and glow discharge processes of nanobainitic X37CrMoV5-1 steel allow producing carbon coatings that can be described as hardened carbon coatings with very high hardness—> 2000 HV 0.25 in case of RFCVD processes and > 3300 HV 0.025 for glow discharge process and low friction coefficient—near 0.12 at 5 N load. However, the adhesion of produced coatings to the steel substrate strongly depends on the appropriate selection of the process parameters and on the proper preparation of the substrate before the deposition regarding the thermal stability of nanobainite.

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Section: Discussionmentioning

confidence: 99%