scholarly journals DEUTERIUM TRAPPING AND SPUTTERING OF TUNGSTEN COATINGS EXPOSED TO LOW-ENERGY DEUTERIUM PLASMA

2020 ◽  
pp. 54-59
Author(s):  
G.D. Tolstolutskaya ◽  
A.S. Kuprin ◽  
A.V. Nikitin ◽  
I.E. Kopanets ◽  
V.N. Voyevodin ◽  
...  
Keyword(s):  
Room Temperature ◽  
Low Energy ◽  
Deuterium Plasma ◽  
Martensitic Steels ◽  
Order Of Magnitude ◽  
Cathodic Arc Evaporation ◽  
Deuterium Retention ◽  
Sputtering Yields ◽  
Arc Evaporation ◽  
Cathodic Arc

Processes of sputtering, surface modification and deuterium retention of tungsten coatings were studied under the influence of low-energy (500 eV) deuterium plasma with fluence (21024 D+/m2) at room temperature. The method of cathodic arc evaporation was used to deposit W and WN-coatings on stainless steel. Results of erosion studies indicated that the sputtering yields for coatings WN and W are 3.110-3 and 4.810-3 at./ion, respectively, and at least two times larger compared to bulk W but almost an order of magnitude smaller compared to ferritic martensitic steels. The total D retentions of W coatings were on the order of 51019 D/m2 and around one orders of magnitude lower than that of WN.

scholarly journals SURFACE MORPHOLOGY AND SPUTTERING OF FeCrAl COATING ON STEEL EXPOSED TO LOW-ENERGY DEUTERIUM PLASMAS

2019 ◽  
pp. 190-194
Author(s):  
V.N. Voyevodin ◽  
G.D. Tolstolutskaya ◽  
A.V. Nikitin ◽  
R.L. Vasilenko ◽  
A.S. Kuprin ◽  
...  
Keyword(s):  
Pure Iron ◽  
Room Temperature ◽  
Nitrogen Atmosphere ◽  
Low Energy ◽  
Vacuum Arc ◽  
Published Data ◽  
Deuterium Plasma ◽  
X Ray ◽  
Order Of Magnitude ◽  
Sputtering Yields

Processes of sputtering and surface modification of FeCrAl coatings deposited on steel by vacuum arc was studied under the influence of low-energy (500 eV) deuterium plasma with fluence (4⋅1024) D+/m2 at room temperature. It was determined the composition of coatings by an energy dispersive X-ray spectrometer allowed to establish that the elements in the coatings are distributed more evenly when it coated in a nitrogen atmosphere. Results of erosion studies indicated that the sputtering yields for deuterium on coatings are 1.3…0.45 at./ion and at least two-three times less in comparison with initial alloys and published data for pure iron and chromium. For coatings deposited in a nitrogen atmosphere found that the obtained sputtering coefficients are almost an order of magnitude smaller in comparison with published data for pure iron and chromium and only 1.8 times higher compared to tungsten.

scholarly journals Effect of Silicon Concentration on the Properties of Al-Cr-Si-N Coatings Deposited Using Cathodic Arc Evaporation

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4717
Author(s):  
Bogdan Warcholinski ◽  
Adam Gilewicz ◽  
Piotr Myslinski ◽  
Ewa Dobruchowska ◽  
Dawid Murzynski ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Protective Coatings ◽  
High Hardness ◽  
Silicon Concentration ◽  
Market Requirements ◽  
Order Of Magnitude ◽  
Cathodic Arc Evaporation ◽  
Machine Parts ◽  
Arc Evaporation ◽  
Cathodic Arc

The current market requirements are related to the introduction of new protective coatings for tools and machine parts with much better performance properties. These requirements are met by the AlCrSiN coatings; however, knowledge on the adhesion of these coatings to the substrate, as well as on their corrosion resistance, is deficient. The article presents the results of technological works on the coating deposition from AlCrSi cathodes with a silicon concentration from 0 at% to 10 at% by the cathodic arc evaporation and the results of systematic studies of their structure, mechanical, tribological and electrochemical properties. A correlation between the above-mentioned properties and the silicon concentration in the AlCrSiN coatings has been found and discussed. The coatings formed from cathodes containing less than 5 at% Si crystallize in the cubic structure. The size of the crystallites decreases with the silicon concentration increase. The coatings are characterized by a high hardness with a maximum of about 37 GPa (2 at% Si). The adhesion of the coatings is almost independent of the concentration of silicon. The wear rate is about one order of magnitude higher for coatings deposited from cathodes with a silicon concentration of 5 at% and 10 at% compared to a coating with a lower silicon concentration. This finding is consistent with the results of corrosion resistance studies. The coating deposited from the cathode with 10 at% of silicon exhibits the best anticorrosion properties against the salt solution.

Surface modification of Ti–Al targets during cathodic arc evaporation

2011 ◽  
Vol 205 (21-22) ◽  
pp. 5116-5123 ◽  
Author(s):  
David Rafaja ◽  
Conrad Polzer ◽  
Gerhard Schreiber ◽  
Peter Polcik ◽  
Martin Kathrein
Keyword(s):  
Surface Modification ◽  
Cathodic Arc Evaporation ◽  
Arc Evaporation ◽  
Cathodic Arc

scholarly journals Fluence Dependence of Surface Morphology and Deuterium Retention in W Bulks and Nanocrystalline W Films Exposed to Deuterium Plasma

2021 ◽  
Vol 11 (4) ◽  
pp. 1619
Author(s):  
Jing Yan ◽  
Xia Li ◽  
Kaigui Zhu
Keyword(s):  
Surface Morphology ◽  
Thermal Desorption Spectroscopy ◽  
Low Energy ◽  
High Flux ◽  
Deuterium Plasma ◽  
Vacancy Clusters ◽  
Plasma Irradiation ◽  
Deuterium Retention ◽  
Fluence Dependence ◽  
Scanning Electron

The surface morphology of pure W bulks and nanocrystalline tungsten films was investigated after exposure to a low-energy (100 eV/D), high-flux (1.8 × 1021 D·m−2s−1) deuterium plasma. Nanocrystalline tungsten films of 6 μm thickness were deposited on tungsten bulks and exposed to deuterium plasma at various fluences ranging from 1.30 × 1025 to 5.18 × 1025 D·m−2. Changes in surface morphology from before to after irradiation were studied with scanning electron microscopy (SEM). The W bulk exposed to low-fluence plasma (1.30 × 1025 D·m−2) shows blisters. The blisters on the W bulk irradiated to higher-fluence plasma are much larger (~2 µm). The blisters on the surface of W films are smaller in size and lower in density than those of the W bulks. In addition, the modifications exhibit the appearance of cracks below the surface after deuterium plasma irradiation. It is suggested that the blisters are caused by the diffusion and aggregation of the deuterium-vacancy clusters. The deuterium retention of the W bulks and nanocrystalline tungsten films was studied using thermal desorption spectroscopy (TDS). The retention of deuterium in W bulks and W films increases with increasing deuterium plasma fluence when irradiated at 500 K.

scholarly journals Erosion and Corrosion Behaviors of ADI Deposited TiN/TiAlN Coatings by Cathodic Arc Evaporation

2005 ◽  
Vol 46 (6) ◽  
pp. 1417-1424 ◽  
Author(s):  
Cheng-Hsun Hsu ◽  
Jung-Kai Lu ◽  
Kuei-Liang Lai ◽  
Ming-Li Chen
Keyword(s):  
Corrosion Behaviors ◽  
Cathodic Arc Evaporation ◽  
Arc Evaporation ◽  
Cathodic Arc
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