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Влияние давления азота на структуру конденсатов, полученных из высокоэнтропийного сплава AlCrTiZrNbY при вакуумно-дуговом осаждении

Влияние давления азота на структуру конденсатов, полученных из высокоэнтропийного сплава AlCrTiZrNbY при вакуумно-дуговом осаждении

Abstract

Методами электронной микроскопии с энергодисперсионным элементным анализом, рентгеновской дифрактометрии и микроиндентирования изучены возможности структурной инженерии вакуумно-дуговых покрытий на основе высокоэнтропийного сплава AlCrTiZrNbY. Установлено, что сформированные вакуумно-дуговым осаждением покрытия являются двухфазными объектами. Изменение давления азота при осаждении покрытий от 2,0∙10⁻⁴до 5,0∙10⁻⁴Торр повышает содержание его атомов в конденсате с 2,7 до 21,62%, что сопровождается переходом от нанокристаллически кластерного к нанокристаллическому двухфазному состоянию (сочетание ОЦК- и ГЦК-структур) и повышением твердости от 6,7 до 7,6 ГПа. Наблюдаемые структурные изменения объяснены образованием дефектов упаковки в ГЦК-решетке при малом содержании азота. The possibilities of structural engineering of vacuum-arc coatings based on the high entropy alloy AlCrTiZrNbY have been studied by means of electron microscopy with energy dispersion element analysis, X-ray diffractometry and microidentation methods. It was found, that the coatings formed by means of vacuum-arc method are two-phase objects. The change of nitrogen pressure from 2.0∙10⁻⁴ to 5.0∙10⁻⁴ Тоrr during the deposition increases the contents of its atoms in the condensate from 2.7 to 21.62%, and this is accompanied by the transfer from nanocrystallic and claster to nanocrystallic two phase state (combination of bcc and fcc structures) and leads to hardness increase from 6.7 to 7.6 GPa. The observed structure changes are explained by the formation of defects of packaging in fcc crystal lattice at low nitrogen content.

Related Organizations
Keywords

нитридные покрытия, structural engineering, атомы, atoms, метод электронной микроскопии, твердость, pressure of nitrogen atmosphere, структурная инженерия, nitride coatings, hardness

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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