Repetitively pulsed vacuum arc ion and plasma sources and new methods of ion and ion-plasma treatment of materials

1997 ◽  
Vol 96 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Alexander I. Ryabchikov
Keyword(s):  
Plasma Treatment ◽  
Vacuum Arc ◽  
Plasma Sources ◽  
New Methods ◽  
Ion Plasma

scholarly journals Aluminum surface modification by electron-ion-plasma methods

2018 ◽  
Vol 143 ◽  
pp. 03007 ◽  
Author(s):  
Olga Krysina ◽  
Elizaveta Petrikova ◽  
Vladimir Shugurov ◽  
Pavel Moskvin ◽  
Yurii Ivanov
Keyword(s):  
Wear Resistance ◽  
Electron Beam ◽  
Plasma Treatment ◽  
Pure Aluminum ◽  
Structural Phase ◽  
Vacuum Arc ◽  
Aluminum Surface ◽  
Titanium Coating ◽  
Commercially Pure ◽  
Ion Plasma

The paper focuses on detection and structural-phase justification of the modes of combined electron-ion plasma treatment of commercially pure A7 grade aluminum carried out in a single vacuum cycle and enabling to enhance mechanical (microhardness) and tribological (wear resistance) properties of the material. Commercially pure A7 grade aluminum underwent combined surface treatment, including deposition of titanium coating by means of vacuum-arc technique and further mixing of the coating/substrate system by intense pulsed electron beam. The varied parameters were energy density of the electron beam (10, 15, 20) J/cm2 and the number of impact pulses (3-100); the thickness of titanium coating was 0.5 μm. Electron-ion plasma treatment of aluminum was carried out in a single vacuum cycle. Optical and scanning electron microscope investigations, measuring of microhardness and tribological tests allowed defining the modes when hardness and wear resistance of the modified surface layer increases manifold in comparison to the initial properties of commercially pure aluminum.

Mechanical properties and fracture micromechanisms in 316L stainless steel subjected to ion-plasma treatment with mixture of N, H and Ar gases

2020 ◽  
Author(s):  
Valentina A. Moskvina ◽  
Galina G. Maier ◽  
Kamil N. Ramazanov ◽  
Roman S. Esipov ◽  
Aleksey A. Nikolaev ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Plasma Treatment ◽  
316L Stainless Steel ◽  
Ion Plasma

Comparative Research on Wear and Erosion Resistance of Ti–Al–Ni–N and Ti–Al–Ni–Mo–N Ion-Plasma Vacuum Arc Coatings

2021 ◽  
Vol 42 (2) ◽  
pp. 85-90
Author(s):  
D. S. Belov ◽  
V. S. Sergevnin ◽  
I. V. Blinkov ◽  
N. I. Smirnov ◽  
A. V. Chernogor
Keyword(s):  
Comparative Research ◽  
Erosion Resistance ◽  
Vacuum Arc ◽  
Ion Plasma

Ion-plasma treatment of reed switch contacts: A study by time-of-flight secondary ion mass spectrometry

2014 ◽  
Vol 69 (13) ◽  
pp. 1245-1251 ◽  
Author(s):  
A. B. Tolstoguzov ◽  
M. N. Drozdov ◽  
I. A. Zeltser ◽  
K. A. Arushanov ◽  
Orlando M. N. D. Teodoro
Keyword(s):  
Mass Spectrometry ◽  
Plasma Treatment ◽  
Secondary Ion Mass Spectrometry ◽  
Time Of Flight ◽  
Reed Switch ◽  
Ion Plasma ◽  
Ion Mass Spectrometry ◽  
Secondary Ion

Mechanisms Influencing the Formation of the Carbonized Layer Relief on the Polymer Surface after the Ion-Plasma Treatment Modeling

2018 ◽  
Vol 938 ◽  
pp. 148-155
Author(s):  
A.Yu. Belyaev ◽  
A.L. Svistkov
Keyword(s):  
Plasma Treatment ◽  
Strain State ◽  
Polymer Surface ◽  
Polymer Chains ◽  
Simple Explanation ◽  
Near Surface ◽  
Ion Flow ◽  
Ion Plasma ◽  
Unit Surface ◽  
Material Heating

The work is devoted to the discussion of hypotheses that are put forward to explain the processes occurring during ion-plasma treatment of polyurethane. A carbonized layer forms on the surface of the polymer as a result of ion-plasma treatment. However this layer is not even. Wavy relief, the geometric features of which depend on the fluence (the number of ions entering the unit surface of the sample) and the energy of ions, is formed. It is shown that a simple explanation related to material heating and subsequent shrinkage does not allow explaining the cause of the phenomenon. The second hypothesis can be the pressure of the ion flow on the surface of the sample. It causes deformation and subsequent changes in the stress-strain state after the irradiation is stopped. Calculations show that this mechanism cannot explain the formation of the folded relief of the layer. A hypothesis, based on information about a significant material change, is expressed in the article. Polymer chains under ion-plasma treatment are broken into atoms. After striking ions move deep into the material causing the polymer to swell in the near-surface layer. This swelling can cause material to move close to the sample boundary and leads to the formation of a wavy surface.

Negative‐ion plasma sources

1988 ◽  
Vol 59 (8) ◽  
pp. 1369-1375 ◽  
Author(s):  
D. P. Sheehan ◽  
N. Rynn
Keyword(s):  
Negative Ion ◽  
Plasma Sources ◽  
Ion Plasma
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