scholarly journals Effect of the deposition parameters on the phase–structure state, hardness, and tribological characteristics of Mo2N/CrN vacuum–arc multilayer coatings

2016 ◽  
Vol 38 (2) ◽  
pp. 114-122 ◽  
Author(s):  
V. M. Beresnev ◽  
S. A. Klimenko ◽  
O. V. Sobol’ ◽  
S. S. Grankin ◽  
V. A. Stolbovoi ◽  
...  
Keyword(s):  
Phase Structure ◽  
Tribological Characteristics ◽  
Vacuum Arc ◽  
Multilayer Coatings ◽  
Deposition Parameters ◽  
Structure State

Effect of Niobium Film on Corrosion Resistance of AZ91D Magnesium Alloy

2012 ◽  
Vol 525-526 ◽  
pp. 9-12 ◽  
Author(s):  
Er Bao Liu ◽  
Xiu Fang Cui ◽  
Guo Jin ◽  
Qing Fen Li ◽  
Tian Min Shao
Keyword(s):  
Corrosion Resistance ◽  
Elastic Modulus ◽  
Magnesium Alloy ◽  
Substrate Temperature ◽  
Phase Structure ◽  
Film Deposition ◽  
Negative Bias ◽  
Az91d Magnesium Alloy ◽  
Atomic Force ◽  
Deposition Parameters

The niobium film is prepared by magnetron sputtering on the surface of the AZ91D magnesium alloy. The morphology, phase structure, roughness, nanohardness and elastic modulus of the niobium films were studied by filed emission scanning electron microscope, X-ray diffraction, atomic force microscope and nanoindentation respectively. The influences of film deposition parameters, such as substrate temperature, negative bias and power on the properties of films were investigated. The corrosion resistance of niobium films on magnesium alloy was investigated by electrochemical system. Results show that the microstructure, phase structure, roughness, nanohardness and elastic modulus of the niobium films are determined by power, negative bias and substrate temperature. And the corrosion resistance of magnesium alloy improved obviously when coated with the niobium films.

Tribological characteristics under different mixed N2/O2 gas flow ratio of ta-C:H film deposited through cathodic vacuum arc method

2018 ◽  
Vol 2018.56 (0) ◽  
pp. 512
Author(s):  
Muhammad Aminurul HELMY ◽  
Shinsuke KUNITSUGU ◽  
Tatsuyuki NAKATANI ◽  
Ichiro SHIMIZU ◽  
Koji HIRAI ◽  
...  
Keyword(s):  
Gas Flow ◽  
Tribological Characteristics ◽  
Vacuum Arc ◽  
Flow Ratio ◽  
Gas Flow Ratio

scholarly journals EFFECT OF DEPOSITION PARAMETERS ON MICROSTRUCTURE AND TRIBOLOGICAL PROPERTIES OF HARD CA-PVD MULTICOMPONENT TiAlCrN AND TiAlCrCN COATINGS

2020 ◽  
pp. 123-126
Author(s):  
I.O. Misiruk ◽  
O.I. Tymoshenko ◽  
V.S. Taran ◽  
A.V. Taran ◽  
S.P. Romaniuk ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Vacuum Arc ◽  
Micro Hardness ◽  
Deposition Parameters ◽  
430 Stainless Steel ◽  
Evaporation Technique ◽  
Arc Evaporation ◽  
Tribomechanical Properties ◽  
Aisi 430 ◽  
Vickers Micro Hardness

Multicomponent TiAlCrN and TiAlCrCN coatings were deposited using vacuum arc evaporation technique on AISI 430 stainless steel. The influence of working gas pressure, C/N ratio, bias voltage on the structure and tribomechanical properties of the obtained coatings has been studied. The surface morphology, chemical compound of the coatings obtained under the various conditions has been analyzed by SEM with EDX, XRD, and XRF analysis. The dry wear pad-on-disc tests against 100Cr6 counterbody at 20 N load have been carried out. It was established that Vickers micro-hardness was varied from 26 to 41 GPa depending on deposition parameters.

Elastic Properties of Diamond Like Carbon Thin Films: a Brillouin Scattering Study

1996 ◽  
Vol 444 ◽  
Author(s):  
O. R. Monteiro ◽  
I. G. Brown ◽  
R. Sooryakumar ◽  
M. Chirita
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Elastic Constants ◽  
Brillouin Scattering ◽  
Deposition Process ◽  
Hard Coatings ◽  
Vacuum Arc ◽  
Deposition Parameters ◽  
Scattering Study ◽  
Isotropic Solids

AbstractDiamondlike carbon (DLC) thin films have been widely used as hard coatings in a variety of applications where increased wear resistance and hardness are required. Vacuum arc DLC films are among the hardest, with measured hardness values of up to 68 GPa. In our deposition process a repetitively pulsed bias voltage is applied to the substrate, which controls the energy of the incoming C ions. DLC chemical and mechanical properties are strongly affected by the energy of the depositing ions. In this paper, we relate the mechanical properties of these films to the deposition parameters, and describe our initial Brillouin scattering measurements of the elastic constants of monolithic DLC films. Evidence for bulk longitudinal and surface Rayleigh excitation in films with thickness of 50 and 500 nm has been observed. Since the DLC films are amorphous, they are modeled as isotropic solids and the elastic constants CII and C44 are derived.

Tribological characteristics of nanosized carbon coatings obtained by the pulsed vacuum-arc method on the modified TiNi surface

2012 ◽  
Vol 33 (4) ◽  
pp. 260-265 ◽  
Author(s):  
M. G. Kovaleva ◽  
A. Ya. Kolpakov ◽  
A. I. Poplavskii ◽  
I. Yu. Goncharov ◽  
M. S. Prozorova ◽  
...  
Keyword(s):  
Tribological Characteristics ◽  
Vacuum Arc ◽  
Carbon Coatings ◽  
Tini Surface

Deposition of CrN Coatings by Filtered Cathodic Vacuum Arc

2008 ◽  
Vol 373-374 ◽  
pp. 130-133 ◽  
Author(s):  
Ji Liang Mo ◽  
Min Hao Zhu ◽  
J. An ◽  
H. Sun ◽  
Yong Xiang Leng ◽  
...  
Keyword(s):  
Partial Pressure ◽  
Bias Voltage ◽  
Vacuum Arc ◽  
Substrate Bias ◽  
Nitrogen Partial Pressure ◽  
Substrate Bias Voltage ◽  
Crn Coating ◽  
Deposition Parameters ◽  
Filtered Cathodic Vacuum Arc ◽  
Crn Coatings

CrN coatings were deposited on cemented carbide substrates by filtered cathodic vacuum arc technique (FCVA). The effect of different deposition parameters: nitrogen partial pressure, substrate-bias voltage and preheating of the substrate, on the structural and mechanical properties of the coating was investigated. X-ray diffraction analysis was used to determine the structure and composition of the coatings. The tribological behaviour and wear properties of the coatings against Si3N4 ball at different normal loads were studied under reciprocating sliding condition. The results showed that a smooth and dense CrN coating with good properties can be obtained provided a pure Cr interlayer was pre-deposited. The optimal deposition parameters were the nitrogen partial pressure of 0.1 Pa, substrate-bias voltage of -100 V. Preheating of the substrate was no good for improving the properties of the coating. The FCVA CrN coating showed high hardness and good wear resistance, which was probably attributed to its smooth surface and dense microstructure. The wear mechanism of the CrN coating was a combination of abrasion and oxidation. However, the coating flaked off at high normal load due to the deficient adhesion strength of the coating to the substrate.

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