Blister formation on 13Cr2MoNbVB ferritic-martensitic steel exposed to hydrogen plasma

et al. 2023

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Processes of sputtering, surface modification and change in the stoichiometric composition of W and WN coatings deposited on stainless steel by cathodic arc evaporation were studied under the influence of low-energy (500 eV/D) deuterium plasma with fluence of (1…4.5)1024 D2 +/m2 at room temperature. The composition of the WN coating changes under the influence of deuterium plasma, its enrichment with tungsten up to 100 % is observed. Results of erosion studies indicated that the sputtering yields for coatings WN and W are ~ 2.410-2 at./ion and to be systematically higher than the published data which were measured for bulk materials.

Section: Methodsmentioning

confidence: 99%

Morphology and Sputtering of Tungsten Nitrides Coatings Exposed to Deuterium Plasma

Tolstolutskaya¹,

Куприн²,

et al. 2023

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“…The coating deposition rate was ~ 6 µm/h. The W and WN coatings have been irradiated with deuterium ions using glow gas-discharge plasma at 1000 V. The design and principle of operation of the gaseous plasma source used for irradiation of the samples is described in detail in [8]. The specimen temperature was measured by the thermocouple and was (30±2.5) °C during irradiation.…”

Section: Methodsmentioning

confidence: 99%

Deuterium Trapping and Sputtering of Tungsten Coatings Exposed to Low-Energy Deuterium Plasma

Tolstolutskaya¹,

Куприн²,

et al. 2020

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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.

“…The specimens have been irradiated with deuterium ions using glow gas-discharge plasma at 1000 V. The design and principle of operation of the gaseous plasma source used for irradiation of the samples is described in detail in [5]. The specimen temperature was measured by the thermocouple and was (30±2.5)°C during irradiation.…”

Section: Methodsmentioning

confidence: 99%

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

Voyevodin¹,

Tolstolutskaya²,

et al. 2019

Self Cite

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.