The present work aims to study the mechanical and tribological properties of titanium boride layer processed by a thermochemical boriding treatment, which was carried out in a salt bath consisting ...

Mechanical and tribological behaviour of titanium boride coatings processed by thermochemicals treatments

Experimental investigation of structural, wetting, mechanical and Tribological properties of TiZrN thin films deposited by magnetron sputtering

Friction and wear enhancement of magnetron sputtered bilayer Cr–N/TiB2 thin-film coatings

TiC/TiCN/TiN multilayer coating was prepared on a high-speed tool steel W6Mo5Cr4V2 by chemical vapour deposition. The tribological performance and behaviour of the coating were investigated at an e...

Tribological performance and behaviour of CVD TiC/TiCN/TiN multilayer coating at elevated temperature

In this study, TiAlZrN films were coated on the hardened 1.2344 (X 40 CrMoV 5 1) steels using DC power supplied closed field unbalanced magnetron sputtering (CFUBMS) technique. Structural investiga...

Investigating the structure, adhesion and tribological properties of Al and Zr-doped TiN coatings with various substrate bias voltage and working pressure

In this study, pure TiN coatings were applied on AISI 52100 steel surfaces with a magnetron sputterer at different direct current (DC) powers and N2 flows to develop a wear-resistant coating for sl...

Friction and Wear Behaviors of TiN Coatings under Dry and Vacuum Conditions

In the present study, CrN, CrAlN and CrAlTiN coatings were deposited using the cathodic arc evaporation technique. The structural investigations of these CrN based coatings were performed by scanni...

The Effect of Al and Ti Transition Metals on the Wear Resistance of Ceramic Based CrN Coatings; Investigation under Ambient Air and Vacuum Conditions

In this study, the main goal is to determine the effects of the variable anodic oxidation process parameters on the hardness and wear properties of the AA7075-T6 alloy, which is widely used in the gun industry, automotive, aircraft, and space industry. Samples obtained using the process parameters designed by the Taguchi method were subjected to various experiments and the findings obtained from these experiments were compared with S/N graphs determined using ANOVA analysis. As a result of these findings, it was determined that different coating thickness, hardness and wear resistance were obtained by varying the anodic oxidation process parameters. The highest oxide layer thickness obtained was determined as 70.63 µm. In addition, the oxide layer formed by the anodic oxidation process has significantly increased the hardness and wear resistance of the AA 7075-T6 alloy. Also, as a result of the experiments and ANOVA analysis, it was determined that the oxide layer obtained with the parameters of 22V constant voltage, 1.3A/dm2 current density, 2°C temperature, 140 minutes of processing time will have the superior wear performance.

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Determining Optimum Anodic Oxidation Parameters for Hardness and Wear Properties of AA7075-T6 Alloys Using Taguchi Design

The surface treatment, which includes first a thermal diffusion process, such as nitriding and then a physical vapor deposition coating process as the working layer, is called duplex treatment in the literature. In this study, the effects of the duplex treatment on the hardness, adhesion, and wear performance of TiAlZrN coatings on the hardened AISI H13 steel produced using the closed field unbalanced magnetron sputtering method with variable Zr target current (2 A, 3 A, and 5 A) were investigated. Within the scope of these investigations, scanning electron microscope, x-ray diffracrometer, optical microscope, optical profilometer, energy-dispersive spectrometer, micro- and nano-hardness, scratch, and wear tests were used. In micro- and nano-hardness tests, it was determined that the hardness of the substrate increased significantly (approximately 400%) owing to the duplex treatment. In addition, with the increase in the Zr target current, it was observed that the hardness of the coatings was in an increasing trend. Adhesion strength increased with the enhancement of both the hardness of the substrate and the coatings. It was beheld that the adhesion strength of the coatings increased with the duplex treatment. Besides, the coating produced using the highest Zr target current reached maximum adhesion strength of 79 N in relation to superior hardness. Wear performance of the samples was determined using a ball-on-disk tribometer. As a result of wear tests, TiAlZrN coatings with duplex treatment were observed to notably improve the wear performance of the substrate material by 95 times. The effects of Zr target current on the wear performance of the coatings were similar to those of hardness and adhesion strength.

Yaşar Sert

Papers

Friction and Wear Behaviors of TiN Coatings under Dry and Vacuum Conditions

Investigating the structure, adhesion and tribological properties of Al and Zr-doped TiN coatings with various substrate bias voltage and working pressure

The Effect of Al and Ti Transition Metals on the Wear Resistance of Ceramic Based CrN Coatings; Investigation under Ambient Air and Vacuum Conditions

Determining Optimum Anodic Oxidation Parameters for Hardness and Wear Properties of AA7075-T6 Alloys Using Taguchi Design

Hardness, Adhesion, and Wear Performance of Duplex Treatment Coatings of Nitride/TiAlZrN with Different Zr Target Currents