Compilation of diamond-like carbon properties for barriers and hard coatings

Abstract

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Diamond-Like Carbon (DLC) Coatings: Classification, Properties, and Applications

“…After the deposition of DLC layers, the samples were tested for analyzing chemical attacks or formation on the substrate surface by using acid drops (Figure 3). The principal tests were produced by applying one layer of 1 μm to 2 μm thickness of DLC deposited on the Al substrates [87]. Further investigation was carried out for enhancing the substrate surface and deploying the SEM test examination to identify the stress cracking on the substrate surface.…”

“…None of the coatings was completely free from the inclusion of undesirable particles. The thicker coating was moderately resistant to chemical formation compared to thinner coatings; since they expanded the ideal opportunity for acid permeation through the layer [87] (see Figure 3). For instance, with the thinner coatings, the response between the Al substrate and the acid was immediate.…”

“…Gille and Rau [100] analyzed the buckling of C-films on a glass substrate to infer internal stress. D. Nir [101,102,111] examined the stress for DLC deposition on Si and many sheets of steel prepared by a DC glow-discharge source. The stress did not seem to be identified with the H content of the film, which contradicted earlier assumptions made by Enke [97], Zelez [100], and Anttila [112].…”

“…The last section in Table 5 gives a correlation to put the measured adhesion qualities in context. Several researchers have reported on adhesion of DLC films in a qualitative manner [97][98][99][100][101][102][103][104][105]111,112,[124][125][126][127][128][129][130][131][132][133][134][135]. It may be difficult to compare the outcomes from these different papers, because of the stated conditions, substrates, and methods for examination approach of the coatings.…”

A Chemical, Mechanical, and Tribological Analysis of DLC Coatings Deposited by Magnetron Sputtering

“…The substrates were ultrasonically cleaned for 6 min in acetone followed by 6 min of ultrasonic cleaning in ethanol and dried with a compressed filtered airflow. We grew a Cr/CrN interlayer to improve the DLC coating adhesion to the substrates using the same deposition setup [40]. For the Cr layer, the RF magnetron sputtering technique was used (200 W RF discharge power), while reactive sputtering was employed to deposit a CrN film (200 W RF discharge power, 5 sccm N 2 flow), for a total thickness of 200 nm.…”