Open AccessDeposition and characterization of Ti-Al-C-N coatings
Author(s) -
Martin Sahul,
Marián Haršáni,
Paulína Babincová,
Ľubomír Čaplovič,
Martin Sahul,
P. Drobný
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/726/1/012013
Subject(s) - materials science , scanning electron microscope , nanoindentation , volumetric flow rate , deposition (geology) , x ray photoelectron spectroscopy , analytical chemistry (journal) , cemented carbide , energy dispersive x ray spectroscopy , tribology , composite material , metallurgy , carbide , chemical engineering , chemistry , chromatography , physics , paleontology , quantum mechanics , sediment , engineering , biology
In the present work, Ti-Al-C-N coatings were deposited on cemented carbide substrates by lateral rotating cathodes (LARC®) process using Platit π 80 +DLC deposition unit. The effect of C 2 H 2 gas flow rate on elemental and phase composition, deposition rate, cross-sectional and surface morphology, mechanical and tribological properties of the coatings was studied. Following analytical techniques, namely: scanning electron microscopy (SEM) with energy and wave dispersive X-ray spectroscopy (EDS and WDS), X-ray diffraction analysis (XRD), nanoindentation measurements, Rockwell C indentation test and tribological testing were used for Ti-Al-C-N coatings evaluation. From the EDS analysis, it was found that the carbon content in the coatings increased from 0 at.% to 22.3 at.% as the C 2 H 2 gas flow rate increased from 0 sccm to 75 sccm. The increase in deposition rate of coatings from 0.029 μm/min to 0.052 μm/min was documented. From XRD results it was found that the coatings consist of a cubic B1-NaCl type Ti 1 N 0.9 phase. The maximum hardness was observed at C 2 H 2 gas flow rate of 25 sccm and the lowest friction coefficient (0.35) at the maximum C 2 H 2 gas flow rate. The coatings deposited at C 2 H 2 gas flow rates (25 sccm and 50 sccm) exhibited an excellent adhesion.