Investigation of ZrN Hard Coatings Obtained by Cathodic Arc Evaporation

2010 ◽  
Vol 159 ◽  
pp. 113-116 ◽  
Author(s):  
Roumen Kakanakov ◽  
H. Bahchedjiev ◽  
Lilyana Kolaklieva ◽  
T. Cholakova ◽  
Svetla Evtimova ◽  
...  
Keyword(s):  
Hard Coatings ◽  
Crystallographic Structure ◽  
Titanium Nitrides ◽  
X Ray Diffraction ◽  
Force Microscopy ◽  
Atomic Force ◽  
Cathodic Arc Evaporation ◽  
Steel Substrates ◽  
Arc Evaporation ◽  
Cathodic Arc

Zirconium nitrides (ZrN) coatings have shown better quality in comparison to titanium nitrides (TiN) ones regarding the application in the mechanical processing of aluminum and titanium alloys. This work presents the results from investigation on properties of ZrN-based coatings intended for industrial application. The ZrN and ZrTiN hard coatings in a thickness of (3 5) m were obtained on stainless steel substrates by cathodic arc evaporation method. The coating hardness in the range of 25-32 GPa was evaluated using the Vickers measurement technique. The coating properties were studied in relation to the surface morphology by Atomic force microscopy (AFM) and Scanning electron microscopy (SEM). The analyses showed that the number and size of the macroparticles decrease when N2 pressure increases in the deposition chamber. X-ray diffraction analysis (XRD) was performed to identify the crystallographic structure, preferred orientation and stress of the ZrN coatings.

Influences of Pulse Frequency on Structure and Mechanical Properties of DLC Films Synthesized by Pulsed Cathodic Arc Evaporation

2014 ◽  
Vol 670-671 ◽  
pp. 560-564 ◽  
Author(s):  
Bing Ye ◽  
Xiao Hong Jiang ◽  
Bing Zhou ◽  
D.G. Piliptsou ◽  
A.V. Rogachev
Keyword(s):  
Crystal Surface ◽  
Pulse Frequency ◽  
Arc Plasma ◽  
Double Crystal ◽  
Force Microscopy ◽  
Atomic Force ◽  
Microstructure Morphology ◽  
Cathodic Arc Evaporation ◽  
Arc Evaporation ◽  
Cathodic Arc

Diamond-like carbon (DLC) films were prepared on the Si (100) substrates by pulsed cathodic arc plasma. The influences of given pulse frequency on the microstructure, morphology, mechanical and optical properties of DLC films were investigated by Raman spectroscopy, atomic force microscopy, Knoop sclerometer, X-ray double-crystal surface profilometer. The results showed that the variation of pulse frequency could significantly change the microstructure of DLC films, including the size and ordering of sp2carbon clusters and movement or diffusion of carbon atoms. The increasing of pulse frequency led to the variation of the relative fraction of Csp3/Csp2. The hardness and internal stress of the DLC films were affected accordingly. The results might contribute to the synthesis of DLC films with excellent structure and properties by cathodic arc evaporation.

Measurement of Mechanical Properties of Single and Multilayered Nitride thin Films Prepared by Cathodic Arc Deposition

2001 ◽  
Vol 697 ◽  
Author(s):  
A.K. Sikder ◽  
I. M. Irfan ◽  
Ashok Kumar ◽  
Robert Durvin ◽  
Mark McDonough ◽  
...  
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
X Ray Diffraction ◽  
Thin Coatings ◽  
Force Microscopy ◽  
Atomic Force ◽  
Cathodic Arc Deposition ◽  
Steel Substrates ◽  
Cathodic Arc ◽  
Arc Deposition

Mechanical properties of thin films differ significantly from those of bulk materials due to the effects of interfaces, microstructure and thick underlying substrates. In this study we will present the results of nanoindentation tests to evaluate mechanical properties of nitride (TiN, ZrN, CrN, TiCN and TiAlN) thin films. Films were coated on steel substrates using cathodic arc deposition technique. Surface morphology and roughness of the samples are investigated using atomic force microscopy (AFM). Films were also characterized by x-ray diffraction (XRD) technique. Nanoindentation technique along with AFM and XRD methods are very useful for characterizing hard thin coatings.

scholarly journals Epitaxial Order Driven by Surface Corrugation: Quinquephenyl Crystals on a Cu(110)-(2×1)O Surface

Crystals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 373 ◽  
Author(s):  
Roland Resel ◽  
Markus Koini ◽  
Jiri Novak ◽  
Steven Berkebile ◽  
Georg Koller ◽  
...  
Keyword(s):  
Thin Film ◽  
Crystal Surface ◽  
Substrate Surface ◽  
Lattice Misfit ◽  
Crystallographic Structure ◽  
Initial Growth ◽  
X Ray Diffraction ◽  
Force Microscopy ◽  
Lattice Matching ◽  
Atomic Force

A 30 nm thick quinquephenyl (5P) film was grown by molecular beam deposition on a Cu(110)(2×1)O single crystal surface. The thin film morphology was studied by light microscopy and atomic force microscopy and the crystallographic structure of the thin film was investigated by X-ray diffraction methods. The 5P molecules crystallise epitaxially with (201)5P parallel to the substrate surface (110)Cu and with their long molecular axes parallel to [001]Cu. The observed epitaxial alignment cannot be explained by lattice matching calculations. Although a clear minimum in the lattice misfit exists, it is not adapted by the epitaxial growth of 5P crystals. Instead the formation of epitaxially oriented crystallites is determined by atomic corrugations of the substrate surface, such that the initially adsorbed 5P molecules fill with its rod-like shape the periodic grooves of the substrate. Subsequent crystal growth follows the orientation and alignment of the molecules taken within the initial growth stage.

Investigation of Structural and Mechanical Properties of Laser Deposited Microlaminate Hard Coatings

2001 ◽  
Vol 697 ◽  
Author(s):  
Manoj Radder ◽  
A.K. Sikder ◽  
Ashok Kumar
Keyword(s):  
Mechanical Properties ◽  
Boron Carbide ◽  
Composite Coatings ◽  
Bottom Layer ◽  
Hard Coatings ◽  
X Ray Diffraction ◽  
Force Microscopy ◽  
Si Substrates ◽  
Atomic Force ◽  
Substrate Temperatures

Nitride and carbide are superhard material with a high potential for applications in different fields. A new group of coatings are the multilayered/microlaminate coatings, which have shown very interesting properties. Single and microlaminate films were coated on Silicon (Si) substrates using pulsed laser deposition (PLD) technique. Films were deposited at different substrate temperatures in order to study the microstructure evolution and their effect on the mechanical properties of these microlaminate films. Structure of the films was characterized by x-ray diffraction (XRD) technique. Surface morphology and roughness of the films were investigated using atomic force microscopy (AFM). Hardness and modulus of the films were investigated using nanoindentation technique. It has been demonstrated that using boron carbide as a bottom layer increases the hardness and Young's modulus values of carbide composite coatings. Microlaminates of boron carbide/titanium carbides have shown higher hardness and modulus as compared to the microlaminates of nitride coatings.

Influence of Bi-Layer Thickness on the Structure and Properties of Multilayered TiN/CrN Coatings by Cathodic Arc Plasma Deposition

2008 ◽  
Vol 373-374 ◽  
pp. 192-195
Author(s):  
Chi Lung Chang ◽  
Wei Yu Ho ◽  
Wen Jen Liu ◽  
J.J. Hwang ◽  
Da Yung Wang
Keyword(s):  
Layer Thickness ◽  
Plasma Deposition ◽  
X Ray Diffraction ◽  
Glancing Angle ◽  
Fixed Power ◽  
Cathodic Arc Evaporation ◽  
Indentation Methods ◽  
Arc Evaporation ◽  
Cathodic Arc ◽  
Crn Coatings

TiN/CrN nanoscale multilayered coatings have been deposited using cathodic arc evaporation system. The coatings were deposited using one Ti target and one Cr target with a fixed power output in the processes, whilst the bi-layer thickness was varied by rotation of the substrate holder to obtain different nanoscale multilayered period thickness. The texture structure, residual stress and nanoscale multilayer thickness of the coatings were determined by X-ray diffraction using both Bragg-Brentano and glancing angle parallel beam geometries. Hardness and adhesion strength of the coatings were measured by Vicker's and Rockwell-C indentation methods. It has been found that the structural and mechanical properties of the films were correlated with nanoscale bi-layer thickness and crystalline texture. The maximum hardness of nanolayered TiN/CrN multilayer coatings was approximately 28 GPa, which the bi-layer thickness was 4 nm.

The Structure-Phase Compositions and Properties of Plasma-Detonation Ni and Co-Based Powder Alloys Coatings

2013 ◽  
Vol 702 ◽  
pp. 94-99 ◽  
Author(s):  
Darya Alontseva ◽  
Alyona Russakova
Keyword(s):  
Coating Layer ◽  
X Ray Diffraction ◽  
Coating Materials ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Powder Alloys ◽  
Transmission Electron ◽  
Structure Phase ◽  
Steel Substrates

This paper presents new results of transmission electron microscopy (TEM), X-ray diffraction (XRD) and atomic force microscopy (AFM) investigation of the structure-phase compositions of thick (150 μm) coatings on the base of Ni and Co deposited by plasma-detonation on steel substrates. The phase structures and morphology of precipitation from solid solution are defined. Factor k is defined in the Hall-Petch equation for the coating materials. The existence of a diffuse zone in the coating layer next to the substrate is established, the thickness of this zone is defined.

scholarly journals Structure and Properties of ZrON Coatings Synthesized by Cathodic Arc Evaporation

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1483
Author(s):  
Alexander S. Kuprin ◽  
Adam Gilewicz ◽  
Tatyana A. Kuznetsova ◽  
Vasilina A. Lapitskaya ◽  
Galina N. Tolmachova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Oxygen Concentration ◽  
Strong Dependence ◽  
Scratch Test ◽  
X Ray Diffraction ◽  
X Ray ◽  
Light Yellow ◽  
Cathodic Arc Evaporation ◽  
Arc Evaporation ◽  
Cathodic Arc

The transition metal oxynitrides are a coating material with decorative features due to their adjustable color and good mechanical properties. The purpose of the research was to study the effect of the relative oxygen concentration O2(x) = O2/(N2 + O2) in particular on adhesion, but also on the color, structural and mechanical properties of ZrON coatings synthesized by cathodic arc evaporation on HS6-5-2 steel substrates. The surface morphology, phase and chemical composition and mechanical properties were determined using scanning electron microscopy, X-ray diffraction, wavelength dispersive X-ray spectroscopy, nanoindentation and scratch test. It was found that color of the coatings changed from light yellow for ZrN first to gold and then to graphite for Zr-O phase with increase of oxygen concentration. X-ray diffraction patterns showed that the phase separation of ZrN and ZrO2 occurred for about 35 at.% of oxygen in the coating. Increase in oxygen concentration in the coatings led to decrease in crystallite size from about 20 nm for ZrN to about 5 nm for coatings with about 35 at.% of oxygen and about 25 at.% of nitrogen. An increase in hardness from about 26 GPa for ZrN to about 30 GPa for coating with small concentration of oxygen (about 9 at.%) and then decrease to about 15 GPa was observed. Adhesion of Zr-O-N coatings demonstrated strong dependence on oxygen concentration. Critical load for ZrN is about 80 N and decreases with oxygen concentration increase to about 30 N for ZrO2.

scholarly journals Analysis of Thermal Stability of CrCN Coatings Deposited on Nitrided Substrates Using Modulated Temperature Thermodilatometry

2017 ◽  
Vol 62 (2) ◽  
pp. 771-776 ◽  
Author(s):  
K. Mydłowska ◽  
P. Myśliński ◽  
Ł. Szparaga ◽  
J. Ratajski ◽  
A. Gilewicz ◽  
...  
Keyword(s):  
Thermal Stability ◽  
X Ray Diffraction ◽  
Modulated Temperature ◽  
Before And After ◽  
42Crmo4 Steel ◽  
Cathodic Arc Evaporation ◽  
Stress States ◽  
Arc Evaporation ◽  
Cathodic Arc ◽  
Thermal Stability Of

Abstract The aim of the research was to investigate the influence of nitriding of the substrate made of 42CrMo4 steel on thermal stability of the antiwear CrCN coating deposited on its surface using Cathodic Arc Evaporation method. Samples of non-nitrided and nitrided substrate/CrCN coating systems were tested with Modulated Temperature Thermodilatometry, which program included system annealing in 26 h, temperature of 290°C and argon atmosphere. Recorded during tests, changes in substrate elongation in response for changes of sample temperature, enabled qualitative determination of changes in stress states in the coatings as a result of samples annealing. Annealing of the system with nitrided substrate resulted in smaller change in residual stress in coating than for the system with non-nitrided substrate, which can indicate its better thermal stability. Values of residual stresses in coatings calculated by sin2ψ method before and after annealing on the basis of tests performed using X-Ray diffraction, agree with results of dilatometric tests.

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