CHARACTERIZATION OF MULTICOMPONENT, TRIBOLOGICAL AlCrTiN COATINGS, PRODUCED BY THE FILTERED CATHODIC VACUUM ARC METHOD

Tribologia ◽  
2017 ◽  
Vol 276 (6) ◽  
pp. 5-11
Author(s):  
Jan BUJAK ◽  
Zbigniew SŁOMKA
Keyword(s):  
Young’S Modulus ◽  
Tribological Properties ◽  
Young's Modulus ◽  
Vacuum Arc ◽  
Mechanical And Tribological Properties ◽  
Filtration System ◽  
Wide Range ◽  
Plasma Filtration ◽  
Filtered Cathodic Vacuum Arc ◽  
Cathodic Arc

In this paper, the AlCrTiN coatings deposited by the cathodic arc method using a plasma filtration system have been studied to determine the effect of the use of this technology on the structural, mechanical, and tribological properties of these coatings. The results of the studies have revealed that using a plasma filtering system in the cathodic arc evaporation process has a significant influence on smoothness, hardness, Young's modulus, and plasticity of the coatings. Compared to the AlTiCrN coatings that have been deposited by the standard arc cathodic process, the coatings produced by filtered method have very smooth surfaces as well as lowered values of hardness, less Young's modulus, and a lower plasticity index H3/E2. Presented properties make coatings of this type able to dissipate elastic energy that is accumulated in them during the abrasion process by plastic deformations, which in turn, results in the reduction of the tendency to create damage in the coatings and cause a limitation of wear rate. Improved tribological properties of the AlTiCrN coatings produced by filtered cathodic arc technology indicate a very promising solution for a wide range of tribological applications.

CARBON NANOCOMPOSITE THIN FILMS PREPARED BY FILTERED CATHODIC VACUUM ARC TECHNIQUE

2002 ◽  
Vol 16 (06n07) ◽  
pp. 933-945 ◽  
Author(s):  
B. K. TAY ◽  
Y. H. CHENG ◽  
S. P. LAU ◽  
X. SHI
Keyword(s):  
Surface Energy ◽  
Internal Stress ◽  
Young’S Modulus ◽  
Field Emission ◽  
Young's Modulus ◽  
Vacuum Arc ◽  
Composite Target ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Filtered Cathodic Vacuum Arc

Nanocomposite amorphous carbon (a-C:Me) films including a-C:Ni , a-C:Co , a-C:Ti , a-C:W , a-C:Fe , a-C:Al , and a-C:Si films were deposited using metal-carbon composite target by filtered cathodic vacuum arc (FCVA) technique. Atomic force microscopy (AFM), Raman, and X-ray photoelectron spectroscopy (XPS) were used to characterize the morphology and structure of the films. Nanoindenter and surface profilometer were used to determine the hardness, Young's modulus, and internal stress. Contact angle and field emission experiments were used to study the surface energy and field emission properties of the films respectively. The influence of the type of elements and its composition in the target on the structural, mechanical, surface energy, and field emission properties were studied. The incorporation of elements into the films results in the decrease of sp 3 C fraction, internal stress in the deposited films, but the hardness and Young's modulus remains at high level. The effect of non-carbide forming elements in the films on the mechanical properties is more pronounced than that of carbide forming elements. The surface energy of the films increases with incorporating Ni atoms, but decreases after incorporating Fe and Al atoms into the films. After heat treatment, the incorporation of metal into ta-C films can greatly improve the field emission performance.

scholarly journals Comparative study of nitrogen implantation effect on mechanical and tribological properties of Ti-6Al-4V and Ti-10Zr-10Nb-5Ta alloys

2019 ◽  
Vol 85 (2) ◽  
pp. 21301 ◽  
Author(s):  
Stéphanie Carquigny ◽  
Jamal Takadoum ◽  
Steliana Ivanescu
Keyword(s):  
Comparative Study ◽  
Young’S Modulus ◽  
Tribological Properties ◽  
Tribological Behavior ◽  
Young's Modulus ◽  
Implantation Dose ◽  
Nitrogen Implantation ◽  
Mechanical And Tribological Properties ◽  
Counterpart Material

The effect of nitrogen implantation on mechanical and tribological properties of Ti-6Al-4V and Ti-10Zr-10Nb-5Ta alloys was studied. Increasing implantation dose from 1 × 1016 N+/cm2 to 2 × 1017 N+/cm2 leads to increase gradually both hardness and Young's modulus. The results show that implantation of 2 × 1017 N+/cm2 allowed to double the value of Young's modulus and to triple the value of hardness. Friction tests that have been conducted against 100Cr6 steel and alumina balls showed that tribological behavior of the two alloys depend on the nature of the counterpart material and is strongly affected by the implanted dose of nitrogen.

scholarly journals Investigation of Nano-Mechanical and- Tribological Properties of Hydrogenated Diamond Like Carbon (DLC) Coatings

2016 ◽  
Vol 33 (6) ◽  
pp. 769-776 ◽  
Author(s):  
Y.-R. Jeng ◽  
S. Islam ◽  
K-T. Wu ◽  
A. Erdemir ◽  
O. Eryilmaz
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Friction Coefficient ◽  
Young’S Modulus ◽  
Tribological Properties ◽  
Young's Modulus ◽  
Chemical Vapour ◽  
Diamond Like Carbon ◽  
Dlc Coatings ◽  
Mechanical And Tribological Properties

AbstractHydrogenated diamond like Carbon (H-DLC) is a promising lubricious coating that attracted a great deal of interest in recent years mainly because of its outstanding tribological properties. In this study, the nano-mechanical and -tribological properties of a range of H-DLC films were investigated. Specifically, four kinds of H-DLC coatings were produced on Si substrates in pure acetylene, pure methane, 25% methane + 75% hydrogen, 50% methane + 50% hydrogen discharge plasmas using a plasma enhanced chemical vapour deposition (PECVD) system. Nano indentation was performed to measure the mechanical properties such as hardness and young's modulus and nanoscartching was performed to investigate the frictional behavior and wear mechanism of the H-DLC samples in open air. Moreover, Vickers indentation method was utilized to assess the fracture toughness of the samples. The results revealed that there is a strong correlation between the mechanical properties (hardness, young's modulus, fracture toughness) and the friction coefficient of DLC coatings and the source gas chemistry. Lower hydrogen to carbon ratio in source gas leads to higher hardness, young's modulus, fracture toughness and lower friction coefficient. Furthermore, lower wear volume of the coated materials was observed when the friction coefficient was lower. It was also confirmed that lower hydrogen content of the DLC coating leads to higher wear resistance under nanoscratch conditions.

THE INFLUENCE OF REDUCING TEMPERATURE ON CHANGING YOUNG’S MODULUS AND THE COEFFICIENT OF FRICTION OF SELECTED SLIDING POLYMERS

Tribologia ◽  
2018 ◽  
Vol 279 (3) ◽  
pp. 107-111
Author(s):  
Anita PTAK ◽  
Piotr KOWALEWSKI
Keyword(s):  
Friction Coefficient ◽  
Young’S Modulus ◽  
Coefficient Of Friction ◽  
Tribological Properties ◽  
Young's Modulus ◽  
Polymeric Materials ◽  
Kinetic Friction ◽  
Mechanical And Tribological Properties ◽  
Pin On Disc ◽  
The Coefficient Of Friction

For the polymeric materials, changing of the temperature causes changes in mechanical and tribological properties of sliding pairs. The goal of the present study was to determine the change in Young's modulus and kinetic friction coefficient depending of the temperature. Three thermoplastic polymers, PA6, PET and PEEK, were tested. These materials cooperated in sliding motion with a C45 construction steel disc. As part of the experiment, the Young's modulus tests (by 3-point bending method) and kinetic friction coefficient studies (using pin-on-disc stand) were carried out. The temperature range of mechanical and tribological tests was determined at T = –50°C±20°C. Comparing the results of mechanical and tribological properties, there is a tendency to decrease the coefficient of friction as the Young's modulus increases while reducing the working temperature.

Comprehensive Mechanical and Tribological Characterization of Ultra-Thin-Films

2007 ◽  
Vol 1049 ◽  
Author(s):  
Norm Gitis ◽  
Michael Vinogradov ◽  
Ilja Hermann ◽  
Suresh Kuiry
Keyword(s):  
Thin Films ◽  
Young’S Modulus ◽  
Adhesion Strength ◽  
Tribological Properties ◽  
Comprehensive Evaluation ◽  
Young's Modulus ◽  
Mechanical And Tribological Properties ◽  
Comparative Results ◽  
Tribological Characterization

AbstractBased on recent studies, mechanical and tribological properties such as hardness, Young's modulus, friction, and scratch adhesion strength on various coatings and ultra-thin films are reported. These results were obtained using a Universal Nano+Micro Tester UNMT-1, suitably designed for comprehensive evaluation of mechanical and tribological properties of bulk materials, coatings and thin films. Results indicate that a substrate effect for ultra-thin films is substantial when using conventional static nanoindentation technique, while negligible with an advanced dynamic nano-indentation. Comparative results of hardness and Young's modulus obtained from various techniques are presented. Also, a means to evaluate friction and adhesion strength of thin films is highlighted, using DLC specimens as an example.

scholarly journals Tribological properties of multilayer tetrahedral amorphous carbon coatings deposited by filtered cathodic vacuum arc deposition

Friction ◽  
2021 ◽  
Author(s):  
Young-Jun Jang ◽  
Jae-Il Kim ◽  
WooYoung Lee ◽  
Jongkuk Kim
Keyword(s):  
Amorphous Carbon ◽  
Tribological Properties ◽  
High Speed ◽  
Multilayer Coating ◽  
High Speed Steel ◽  
Single Layer ◽  
Vacuum Arc ◽  
Mechanical And Tribological Properties ◽  
Tetrahedral Amorphous Carbon ◽  
Filtered Cathodic Vacuum Arc

AbstractTetrahedral amorphous carbon (ta-C) has emerged as an excellent coating material for improving the reliability of application components under high normal loads. Herein, we present the results of our investigations regarding the mechanical and tribological properties of a 2-µm-thick multilayer ta-C coating on high-speed steel substrates. Multilayers composed of alternating soft and hard layers are fabricated using filtered a cathodic vacuum arc with alternating substrate bias voltages (0 and 100 V or 0 and 150 V). The thickness ratio is discovered to be 1:3 for the sp2-rich and sp3-rich layers. The results show that the hardness and elastic modulus of the multilayer ta-C coatings increase with the sp3 content of the hard layer. The hardness reached approximately 37 GPa, whereas an improved toughness and a higher adhesion strength (> 29 N) are obtained. The friction performance (µ = 0.07) of the multilayer coating is similar to that of the single layer ta-C thick coating, but the wear rate (0.13 × 10−6 mm3/(N·m)) improved under a high load of 30 N. We further demonstrate the importance of the multilayer structure in suppressing crack propagation and increasing the resistance to plastic deformation (H3/E2) ratio.

TRIBOLOGICAL AND MECHANICAL PROPERTIES OF ALUMINUM CONTAINING TETRAHEDRAL AMORPHOUS CARBON FILMS

2002 ◽  
Vol 16 (06n07) ◽  
pp. 946-951 ◽  
Author(s):  
E. Liu ◽  
J. X. Gao ◽  
B. K. Tay ◽  
X. Shi ◽  
A. Zeng
Keyword(s):  
Young’S Modulus ◽  
Amorphous Carbon ◽  
Young's Modulus ◽  
Carbon Films ◽  
Vacuum Arc ◽  
Al Content ◽  
Tetrahedral Amorphous Carbon ◽  
Atomic Force ◽  
Film Hardness ◽  
Filtered Cathodic Vacuum Arc

Tetrahedral amorphous carbon (ta-C) films which contained aluminum element were fabricated by filtered cathodic vacuum arc (FCVA) method. The tribological characteristics of the ta-C films were investigated with ball-on-disk tribometer. The increment of aluminum in the ta-C film leads to an increase of sp2 carbon bonding and a decrease of sp3 fraction in the film. The roughness of the films was measured with atomic force microscope, and the hardness and Young's modulus of the films were measured with nanoindentation. The results showed that the film hardness and Young's modulus dropped with the increase of Al content in the films. The results have been interpreted with respect to the change of sp 3 and sp 2 fractions in the ta-C:Al films.

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