scholarly journals Structure, Oxidation Resistance, Mechanical, and Tribological Properties of N- and C-Doped Ta-Zr-Si-B Hard Protective Coatings Obtained by Reactive D.C. Magnetron Sputtering of TaZrSiB Ceramic Cathode

Coatings ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 946
Author(s):  
Ph. V. Kiryukhantsev-Korneev ◽  
A. D. Sytchenko ◽  
S. A. Vorotilo ◽  
V. V. Klechkovskaya ◽  
V. Yu. Lopatin ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Oxidation Resistance ◽  
Tribological Properties ◽  
Protective Coatings ◽  
Elastic Recovery ◽  
Protective Film ◽  
X Ray Diffraction ◽  
Energy Dispersion Spectroscopy ◽  
X Ray ◽  
Mechanical And Tribological Properties

Coatings in the Ta-Zr-Si-B-C-N system were produced by magnetron sputtering of a TaSi2-Ta3B4-(Ta,Zr)B2 ceramic target in the Ar medium and Ar-N2 and Ar-C2H4 gas mixtures. The structure and composition of coatings were studied using scanning electron microscopy, glow discharge optical emission spectroscopy, energy-dispersion spectroscopy, and X-ray diffraction. Mechanical and tribological properties of coatings were determined using nanoindentation and pin-on-disk tests using 100Cr6 and Al2O3 balls. The oxidation resistance of coatings was evaluated by microscopy and X-ray diffraction after annealing in air at temperatures up to 1200 °C. The reactively-deposited coatings containing from 30% to 40% nitrogen or carbon have the highest hardness up to 29 GPa and elastic recovery up to 78%. Additionally, coatings with a high carbon content demonstrated a low coefficient of friction of 0.2 and no visible signs of wear when tested against 100Cr6 ball. All coatings except for the non-reactive ones can resist oxidation up to a temperature of 1200 °C thanks to the formation of a protective film based on Ta2O5 and SiO2 on their surface. Coatings deposited in Ar-N2 and Ar-C2H4 demonstrated superior resistance to thermal cycling in conditions 20-T−20 °C (where T = 200–1000 °C). The present article compares the structure and properties of reactive and “standard-inert atmosphere” deposited coatings to develop recommendations for optimizing the composition.

scholarly journals Structure and Properties of Zr-Mo-Si-B-(N) Hard Coatings Obtained by d.c. Magnetron Sputtering of ZrB2-MoSi2 Target

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1932
Author(s):  
Philipp Kiryukhantsev-Korneev ◽  
Alina Sytchenko ◽  
Yuriy Pogozhev ◽  
Stepan Vorotilo ◽  
Anton Orekhov ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Oxidation Resistance ◽  
Elastic Recovery ◽  
Optical Emission ◽  
Hard Coatings ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mechanical And Tribological Properties ◽  
Pin On Disc ◽  
High Oxidation Resistance

Coatings in a Zr-Mo-Si-B-N system were deposited by the magnetron sputtering of ZrB2-MoSi2 targets in argon and nitrogen. The structure of the coatings was investigated using scanning electron microscopy, X-ray diffraction, energy-dispersive spectroscopy, and glow-discharge optical emission spectroscopy. Mechanical and tribological properties were measured using nanoindentation and pin-on-disc testing. Oxidation resistance and oxidation kinetics were estimated via annealing in air at 1000–1500 °C and precision weight measurements. We found that the coatings deposited in Ar demonstrate a superior combination of properties, including hardness of 36 GPa, elastic recovery of 84%, a friction coefficient of 0.6, and oxidation resistance at temperatures up to 1200 °C. High oxidation resistance is realized due to the formation of the protective (SiO2 + ZrO2)/SiO2 oxide layer, which inhibits the diffusion of oxygen into the coating.

Mechanical and Tribological Properties of Multi-Element CrTiAlN Coatings for Dry Cutting Deposited by Magnetron Sputtering Technologies

2010 ◽  
Vol 34-35 ◽  
pp. 610-615
Author(s):  
Zhi Hai Cai ◽  
Ping Zhang ◽  
Jia Wu He
Keyword(s):  
Friction Coefficient ◽  
Magnetron Sputtering ◽  
Tribological Properties ◽  
Composite Films ◽  
Experimental Results ◽  
Wear Volume ◽  
X Ray Diffraction ◽  
Dry Cutting ◽  
Mechanical And Tribological Properties ◽  
Section Structure

Multi-element CrTiAlN coatings are deposited onto YT14 cemented carbide milling cutter by magnetron sputtering in an Ar+N2 mixture. The nano-indenter, scanning electron microscopy, X-ray diffraction and Rockwell indentations were used to investigate the mechanical property, microstructure and adhesion strength of CrTiAlN coatings. And the tribological properties and dry cutting performance of the CrTiAlN coatings were compared with TiN and TiAlN coatings. The experimental results showed that the phase structures of the composite films include Cr, CrN, Cr2N and TiN phases. And the surface crystal grain of CrTiAlN coatings is relative small and the section structure of CrTiAlN coatings was columns crystal structure. It showed better for CrTiAlN coatings on nano-hardness and adhesion compared with TiN and TiAlN coatings. And the friction coefficient of above three kind coatings was about 0.12-0.15. The friction coefficient and wear volume of CrTiAlN coatings appeared lowest among these three kind coatings. Dry cutting experimental results showed that the sequence of cutting life for these coated tools were CrTiAlN＞TiAlN＞TiN.

Synthesis and Characterization of Quaternary Ti-Si-C-N Film Deposited by Middle Frequency Magnetron Sputtering

2012 ◽  
Vol 581-582 ◽  
pp. 540-543
Author(s):  
Jin Long Jiang ◽  
Di Chen ◽  
Wei Jun Zhu
Keyword(s):  
Magnetron Sputtering ◽  
Elastic Recovery ◽  
Amorphous Structure ◽  
Columnar Structure ◽  
Maximum Hardness ◽  
X Ray Diffraction ◽  
X Ray ◽  
Large Particles ◽  
Si Wafer

Quaternary Ti-Si-C-N films were deposited Si wafer by middle frequency magnetron sputtering Ti80Si20 twin-targets in mixture atmosphere of Ar, CH4 and N2. Scanning electron microscopy (SEM) and x-ray diffraction (XRD) results indicate that the films present an amorphous structure with no columnar structure. These films are quite uniform and dense without large particles. The film deposited at 10 sccm CH4 and 10 sccm N2 flow rates exhibits a maximum hardness of 18.9 GPa and high elastic recovery of 97%.

Structure, mechanical properties and oxidation resistance of MoSi2, MoSiB and MoSiB/SiBC coatings

2018 ◽  
pp. 93-104
Author(s):  
F. V. Kiryukhantsev-Korneev ◽  
A. Yu. Potanin
Keyword(s):  
Mechanical Properties ◽  
Oxidation Resistance ◽  
Elastic Recovery ◽  
Single Layer ◽  
Optical Emission ◽  
Protective Film ◽  
Short Term ◽  
X Ray ◽  
Elastoplastic Properties ◽  
Lower Oxidation

Magnetron sputtering was used to obtain single-layer MoSi2, MoSiB and multilayer MoSiB/SiBC coatings. Coating structures were studied using X-ray phase analysis, scanning electron microscopy and glow discharge optical emission spectroscopy. Mechanical properties of the coatings were determined by nanoindentation. The coatings were tested for oxidation resistance and thermal stability at temperatures between 600 °С and 1200 °С. It was found that single-layer MoSiB coatings have a hardness of 27 GPa, elasticity modulus of 390 GPa and elastic recovery of 48 % and exhibit short-term oxidation resistance up to 1500 °С inclusive due to a SiO2-based protective film formed on their surfaces. MoSi2coatings have hardness comparable to that of MoSiB but slightly lower oxidation resistance. Multilayer MoSiB/SiBC coatings feature 23–27 GPa hardness and oxidation resistance limited to 1500 °С, but at the same time they have higher elastoplastic properties as compared to MoSiB.

Microstructure, Mechanical and Tribological Properties of Reactive Magnetron Sputtered Titanium Carbide Coatings

2007 ◽  
Author(s):  
Kyriaki Polychronopoulou ◽  
Claus Rebholz ◽  
Nicholaos G. Demas ◽  
Andreas A. Polycarpou ◽  
Lefki Theodorou ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Carbon Content ◽  
Tribological Properties ◽  
Photoelectron Spectroscopy ◽  
Reactive Magnetron ◽  
X Ray Diffraction ◽  
X Ray ◽  
Wear Rates ◽  
Mechanical And Tribological Properties ◽  
Carbide Coatings

This study describes the correlation between the microstructure, mechanical and tribological properties of Ti1−xCx coatings (with x being in the range of 0–0.5), deposited by reactive magnetron sputtering from a Ti target in Ar/C2H2 mixtures at ∼200 °C. The mechanical and tribological properties were found to strongly depend on the chemical composition and the microstructure present. Very dense structures and highest hardness and elastic modulus, combined with low wear rates, were observed for films with chemical composition close to TiC. X-ray diffraction (XRD) studies showed that the coating deposited at high C2H2 flow rates composed of randomly oriented TiC crystallites. Morphological investigations by scanning electron microscopy (SEM) indicate that the morphology is strongly dependent on the carbon content of the coating. Coatings composition and bonding environment was investigated using X-ray photoelectron spectroscopy (XPS). Both the mechanical properties and tribological performance of the coatings were found to be dependent on carbon content.

Effect of boronizing on the structural, mechanical and tribological properties of CoCrW dental alloy produced by selective laser melting

2019 ◽  
Vol 71 (3) ◽  
pp. 348-356
Author(s):  
Yakup Uzun ◽  
Halim Kovacı ◽  
Ali Fatih Yetim ◽  
Ayhan Çelik
Keyword(s):  
Selective Laser Melting ◽  
Tribological Properties ◽  
Surface Characteristics ◽  
Production Method ◽  
Dental Alloy ◽  
X Ray Diffraction ◽  
Laser Melting ◽  
Content Type ◽  
X Ray ◽  
Mechanical And Tribological Properties

PurposeThis paper aims to investigate the effects of boriding on the structural, mechanical and tribological properties of CoCrW dental alloy manufactured by the method of selective laser melting.Design/methodology/approachIn this study, CoCrW alloy samples that are used in dentistry were manufactured by the method of laser melting, and boriding treatment was made on the samples at 900°C and 1,000°C for 1, 4 and 8 h. The structural, mechanical and tribological effects of boriding on the samples were analyzed using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, microhardness and an abrasion test device.FindingsAccording to the results, the best outcomes in terms of abrasion strength and hardness were obtained in the sample that was subjected to boriding at 1,000°C for 4 h.Originality/valueThis study produced CoCrW alloys, which are fundamental biomaterials that are used in dentistry, by a different production method called selective laser melting and improved their surface characteristics by boriding.

Microstructure and Oxidation Resistance of TiN Coatings

2013 ◽  
Vol 750-752 ◽  
pp. 2092-2095 ◽  
Author(s):  
Guo Zheng Nie ◽  
Chun Liang Zhong ◽  
Lan E Luo ◽  
Ren Long Zhou ◽  
Qiang Liu
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Oxidation Resistance ◽  
Reactive Magnetron Sputtering ◽  
Reactive Magnetron ◽  
X Ray Diffraction ◽  
Tin Coating ◽  
X Ray ◽  
Tin Coatings ◽  
Cubic Structure

A series of TiN coatings were deposited by reactive magnetron sputtering with different target powers and different N2flows. The microstructure and oxidation resistance of TiN coatings were characterized by X-ray diffraction (XRD). The hardness of the thin films was characterized respectively with the nanoindentor. The effect of target powers and the N2flows on the microstructure, the hardness and oxidation resistance was studied. It was found that TiN coating deposited at different target powers and different N2flows exhibits a cubic structure with (1 1 1) preferred orientations, and the hardness of TiN coatings is 1200. The oxidation resistance of the TiN coatings is approximately 500°C.

The Structure and Thermal Properties of ZrAlYN Films Deposited by Magnetron Sputtering

2014 ◽  
Vol 488-489 ◽  
pp. 9-13
Author(s):  
Guang Xian ◽  
Hai Bo Zhao ◽  
Hong Yuan Fan ◽  
Hao Du
Keyword(s):  
Electron Microscopy ◽  
Thermal Properties ◽  
Magnetron Sputtering ◽  
Oxidation Resistance ◽  
Solution Phase ◽  
Solid Solution Phase ◽  
Flow Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

ZrAlYN films were prepared by magnetron sputtering at various N2/Ar flow ratio. The structure, composition and thermal properties were characterized by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectrum. The results show that the deposited ZrAlN and ZrAlYN films possessed a single NaCl-type solid solution phase. The ZrAlN film was (200) strongly predominated. The (111) peak was prominently increased in ZrAlYN films and thus the preferred orientation changed to (111) and (200) co-predomination. The crystallinity of ZrAlYN films was gradually degraded with enhanced N2/Ar flow ratio. Both ZrAlN and ZrAlYN films were exhibited a featureless fracture microstructure. The thickness of ZrAlYN films was consistently reduced due to more nitride produced on the surface of targets at higher N2/Ar flow ratio. The ZrAlYN films deposited at 1:5 N2/Ar flow ratio was proved to be the best oxidation resistance under annealing at 1000°C for 2h in air. As N2/Ar flow ratio increased, the oxidation resistance of films was inversely deteriorated due to the decreased yttrium content in films.

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