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Information × Registration Number 2116U002074, Article popup.category Стаття Title popup.author popup.publication 01-01-2016 popup.source_user Сумський державний університет popup.source http://essuir.sumdu.edu.ua/handle/123456789/46990 popup.publisher Pleiades Publishing, Ltd Description The structure, composition, and properties of transitionmetal diboride films have been studied. It was shown that they are characterized by a wide range of structural states, namely from amorphouslike to nanocrystalline with crystallite sizes of 1–50 nm. The characteristic peculiarity of the structure of film transitionmetal diborides with high physical and mechanical properties is the formation of a nanocrystalline (columnar) structure with the growth texture in plane [00.1] and a nanocrystallite size of 20–50 nm. The element composition of a superhard highly textured film transitionmetal diborides was studied by ion mass spectrometry and Auger electron spectroscopy. The overstoichiometry effect in nanocrystalline transition metal diboride films is explained. It was shown that this effect is related to the formation of an additional B⎯B covalent bond, which is realized at subgrain boundaries and leads to the appearance of superhardness in the formed coatings. Keywo popup.nrat_date 2025-05-12 Close