nucВестник НЯЦ РКNNC RK Bulletin1729-75161729-7885Национальный ядерный центр Республики Казахстан10.52676/1729-7885-2025-4-142-149nuc-929Research ArticleСтатьиНАНОРАЗМЕРНАЯ АРХИТЕКТУРА НАНОСТРУКТУРИРОВАННЫХ ПОКРЫТИЙ НА ОСНОВЕ (CrN/ZrN)/(Cr/Zr)NANOSCALE ARCHITECTURE OF NANOSTRUCTURED COATINGS BASED ON (CrN/ZrN)/(Cr/Zr)https://orcid.org/0000-0001-6095-0129СакеноваР. Е.SakenovaR. E.

Усть-Каменогорск

Ust-Kamenogorsk

SakenovaRim@gmail.comhttps://orcid.org/0000-0002-9218-6492ПогребнякА. Д.PogrebnyakA. D.

Сумы

Sumy 

a.d.pogrebnjak@gmail.comhttps://orcid.org/0000-0003-3533-242XБаймолдановаЛ. С.BaimoldanovaL. S.

Усть-Каменогорск

Ust-Kamenogorsk

lyazbs_82@mail.ruВосточно-Казахстанский университет им. Сарсена АманжоловаКазахстанSarsen Amanzholov East Kazakhstan UniversityKazakhstanСумский государственный университетУкраинаSumy State UniversityUkraine20250812202504142149Copyright © Сакенова Р.Е., Погребняк А.Д., Баймолданова Л.С., 20252025Сакенова Р.Е., Погребняк А.Д., Баймолданова Л.С.Sakenova R.E., Pogrebnyak A.D., Baimoldanova L.S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://journals.nnc.kz/jour/article/view/929

Исследованы микроструктура и механические свойства периодически чередующегося многослойного наноструктурированного покрытия, состоящего из чередующихся металлических нитридов (CrN/ZrN) и чистых металлов (Cr/Zr). Была получена специально разработанная многослойная структура, включающая в одном модуляционном периоде 7 металлических и 40 нитридных слоев. Толщина каждого металлического слоя составляла 16 нм, а толщина нитридных слоев – 25 нм. Для объяснения механизма повышения прочности покрытия были проведены расчёты на основе первых принципов, опираясь на полученные экспериментальные данные.

Результаты микроструктурных исследований показали преобладание кубических фаз CrN и ZrN с чётко выраженной ориентацией по направлениям (200) и (111)/(200). Несмотря на наноразмерные размеры нанослоёв и нанокристаллов, на границах между слоями CrN и ZrN наблюдались дислокации и структурные нарушения кристаллических плоскостей.

Исследуемая многослойная структура продемонстрировала высокие механические свойства: максимальную твёрдость 34 ГПа, приведённый модуль упругости 330 ГПа, предел упругой деформации до пластической деформации 0,1, а также сопротивление пластической деформации 0,36.

Указанные высокие характеристики были достигнуты благодаря уникальной многослойной (внутренней многослойной) архитектуре покрытия и его специфическим структурным особенностям.

The microstructure and mechanical properties of a periodically alternating multilayered nanostructured coating composed of alternating metal nitrides (CrN/ZrN) and pure metals (Cr/Zr) were investigated. A specially designed multilayer structure was fabricated, consisting of 7 metal and 40 nitride layers within one modulation period. The thickness of each metal layer was 16 nm, while the thickness of each nitride layer was 25 nm. To explain the mechanism of increased coating strength, first-principles calculations were conducted based on the obtained experimental results.

Microstructural studies revealed that cubic CrN and ZrN phases predominate, clearly oriented along the (200) and (111)/(200) crystallographic directions. Despite the nanoscale dimensions of the nanolayers and nanocrystals, dislocations and structural disorder of crystal planes were observed at the interfaces between CrN and ZrN layers.

The investigated multilayer structure demonstrated outstanding mechanical properties, including a maximum hardness of 34 GPa, a reduced elastic modulus of 330 GPa, an elastic strain limit before plastic deformation of 0.1, and a plastic deformation resistance of 0.36.

These superior properties were achieved as a result of the unique multilayered (internal multilayer) architecture of the coating and its specific structural features.

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The authors declare that there are no conflicts of interest present.