CHARACTERIZATION OF TiCN COATING SYNTHESIZED BY THE PLASMA ENHANCED PHYSICAL VAPOUR DEPOSITION PROCESS ON A CEMENTED CARBIDE TOOL

2018 ◽  
Vol 25 (08) ◽  
pp. 1950028 ◽  
Author(s):  
T. SAMPATH KUMAR ◽  
A. VINOTH JEBARAJ ◽  
K. SIVAKUMAR ◽  
E. SHANKAR ◽  
N. TAMILOLI
Keyword(s):  
Vapour Deposition ◽  
Deposition Process ◽  
Scratch Resistance ◽  
Cemented Carbide ◽  
Titanium Carbonitride ◽  
Physical Vapour Deposition ◽  
Atomic Force ◽  
Ticn Coating ◽  
Coated Film ◽  
Cemented Carbide Tool

In the present investigation, Titanium Carbonitride (TiCN) coating was deposited on a cemented carbide substrate, by means of Plasma Enhanced Physical Vapour Deposition (PEPVD) process. The microstructure of the deposited film was characterized using the Scanning Electron Microscope (SEM). Highly dense, less porous and uniformly distributed TiCN coating was observed on the coated surface. X-Ray diffraction analysis was carried out to access the phases present in the coated layer. The scratch resistance and hardness were measured using the scratch tester and Nanoindenter, respectively. The TiCN coating gives higher hardness and superior scratch resistance when compared to the substrate. The surface morphology of the coated film was characterized using the Atomic Force Microscope (AFM) and was found that the surface roughness was lesser for TiCN coating when compared to cemented carbide substrate. The intensified TiCN coating on the substrate will be useful in improving the surface behavior of cemented carbide cutting tool.

Reduction of Friction Torque in Vane Pumps by Using Physical Vapour Deposition-Coated Vane

2010 ◽  
Vol 224 (11) ◽  
pp. 2449-2458 ◽  
Author(s):  
Y Inaguma
Keyword(s):  
Surface Roughness ◽  
Vapour Deposition ◽  
Friction Torque ◽  
Titanium Carbonitride ◽  
Physical Vapour Deposition ◽  
Vane Pump ◽  
Pump Operation ◽  
Hydraulic Machines ◽  
Short Period ◽  
Contour Surface

This paper presents a method of reducing friction torque in a hydraulic vane pump through a short-period pump operation by using physical vapour deposition (PVD)-coated vanes. It is well known that the friction torque in a vane pump as well as in other hydraulic machines can be reduced by running-in through a long-time pump operation. This paper revealed that the reduction in the friction torque was derived from lowered friction between a cam contour and vane tips owing to the smoothed surface of a cam contour. Commonly, it was difficult to obtain such an effect through a short-period pump operation. The author has attempted to lessen the surface roughness of the cam contour and to decrease the friction torque of a vane in a short period of time by using vanes coated with an extremely hard PVD layer on their tips. In this study, three kinds of coatings of chromium nitride (CrN), titanium carbonitride (TiCN), and diamond-like carbon (DLC) by PVD were examined. It was found that the TiCN-coated vane was excellent in smoothing the surface roughness of the cam contour and in reducing the friction torque of the vane in a short period of time. It was also shown that the reduced friction torque of the vane depended essentially on the smoothness of the cam contour surface. In addition, the difference of the friction at the vane tip between an ordinary vane and coated vanes was indistinct for the same surface roughness of the cam contour below 0.8 μ m Rz.

TEM Investigations of (Ti, Si)N Layer Coated on Magnesium Alloy Using PVD Technique

2013 ◽  
Vol 203-204 ◽  
pp. 198-203 ◽  
Author(s):  
Tomasz Tański ◽  
Krzysztof Labisz ◽  
Janusz Szewczenko
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Wear Resistance ◽  
Surface Engineering ◽  
Vapour Deposition ◽  
Research Work ◽  
Deposition Process ◽  
General Purpose ◽  
General View ◽  
Physical Vapour Deposition

Thin films and coatings are applied to engineering materials in order to improve the mechanical properties of the surface, such as wear resistance, corrosion resistance and hardness. This research work deals with coatings deposited by appliance of the Physical Vapour Deposition method (PVD). The presented instigations concerning the production of coatings are one of the present important directions connected with modern surface engineering, ensuring the obtainment of coatings of high usable properties like mechanical characteristics and wear resistance. The general purpose of this work is investigation and evaluation of the obtained Ti/(Ti,Si)N/(Ti,Si)N coatings on magnesium cast alloys using electron microscope as the main investigation tool. The investigations were performed using scanning and transmission electron microscopy for the microstructure determination, also EDS microanalysis and electron diffraction was possible to obtain. While investigating the coating material, there were studied the transition zone between the coating and the substrate material as well the occurrence of some structure defects which can be present after the deposition process and could have any influence of the properties of the achieved coating. Also the structure character will be investigated for the occurrence of the nanostructure coatings, which could be seen as the solution of this issue. In the present work, the goal is set on current practices and future trends for nanocomposite thin films and coatings deposited by physical vapour deposition (PVD) technique. This investigation will touch some aspects of such coatings, but the main objective is to give a general view on features revealed using electron microscopy application in PVD coating investigations.

Fabrication of TiAl Target by Mechanical Alloying and Applications in Physical Vapour Deposition Coating

2007 ◽  
Vol 534-536 ◽  
pp. 805-808 ◽  
Author(s):  
Brian Gabbitas ◽  
Peng Cao ◽  
Stella Raynova ◽  
De Liang Zhang
Keyword(s):  
Mechanical Alloying ◽  
Vapour Deposition ◽  
Hot Isostatic Pressing ◽  
Target Material ◽  
Deposition Process ◽  
Physical Vapour Deposition ◽  
Pvd Coatings ◽  
Mechanically Alloyed ◽  
X Ray ◽  
High Microhardness

The research involves the development of a powder metallurgical route for producing good quality TiAl targets for making physical vapour deposition (PVD) coatings. Mixtures of elemental titanium and aluminium powders were mechanically milled using a novel discus milling technique under various conditions. Hot isostatic pressing (HIP) was then employed for consolidation of the mechanically alloyed powders. A cathodic arc vapour deposition process was applied to produce a TiAlN coating. A microstructural examination was conducted on the target material and PVD coatings, using X-ray diffractometry (XRD), X-ray photoelectron spectrometry (XPS) and scanning electron microscopy (SEM). It has been found that combining mechanical alloying and HIP enable us to produce a fairly good quality of TiAl based target. The PVD coatings obtained from the TiAl target showed very high microhardness values.

scholarly journals Effect of the Substrate Biasing on the Structure and Properties of Tantalum Coatings Deposited Using HiPIMS in Deep Oscillations Magnetron Sputtering Mode

Metals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1618
Author(s):  
Fábio Ferreira ◽  
Albano Cavaleiro ◽  
João Oliveira
Keyword(s):  
Magnetron Sputtering ◽  
Young’S Modulus ◽  
Vapour Deposition ◽  
Young's Modulus ◽  
Ion Bombardment ◽  
Deposition Process ◽  
Physical Vapour Deposition ◽  
Structure And Properties ◽  
Industrial Level ◽  
Tantalum Coatings

The influence of energetic ion bombardment on the properties of tantalum coatings was studied. To achieve such energetic ion bombardment during the deposition process of tantalum coatings, a combination of deep oscillation magnetron sputtering (DOMS), an ionized physical vapour deposition technique, with substrate biasing was used. The substrate biasing was varied between 0 and −120 V. In this work, the structure (XRD), microstructure (SEM), surface morphology (AFM) and hardness, and Young’s modulus (nanoindentation) of the coatings were characterized. The results show with the use of such conditions it was possible to deposit a pure α-Ta (the most desired at industrial level) with improved mechanical properties (hardness equal to 22.4 GPa and Young’s modulus equal to 235 GPa). The roughness of the Ta coatings decreases up to values of about 1 nm with an increase of substrate biasing. It was possible to deposit very dense Ta coatings with 2 µm of thickness. Therefore, these results are significantly different than in previous works, offering Ta coatings with a combination of very interesting properties.

scholarly journals Topography, mechanical and tribological properties of nanocomposite carbon-palladium films

Open Physics ◽  
2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Joanna Rymarczyk ◽  
Lukasz Kolodziejczyk ◽  
Elzbieta Czerwosz
Keyword(s):  
Vapour Deposition ◽  
Carbon Matrix ◽  
Physical Vapour Deposition ◽  
Technological Parameters ◽  
Force Microscopy ◽  
Nanomechanical Properties ◽  
Mechanical And Tribological Properties ◽  
Atomic Force ◽  
Palladium Content ◽  
Scanning Electron

AbstractIn this work, the differences in nanomechanical properties, topography and morphology of carbonpalladium (C-Pd) films were studied. These films were prepared with a Physical Vapour Deposition method on various substrates with different technological parameters. We show that duration of the PVD process is a crucial factor affecting the palladium content in these films. The differences in thickness of films depend on the distance between source boats and substrates. The nanomechanical properties of C-Pd films were studied with nanoindentation. Their topography and morphology was ascertained with Atomic Force Microscopy and Scanning Electron Microscopy. It was found that the mechanical properties of C-Pd films depend on the content of palladium and on the morphology and topography of these films. The various types of carbon-palladium films containing palladium nanograins incorporated in a carbon matrix that were, investigated in this paper, seem to be promising materials for numerous applications.

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