kaz44Вестник Университета Шакарима. Серия технические наукиBulletin of Shakarim University. Technical Sciences2788-79953006-0524«Шәкәрім университеті» КеАҚ10.53360/2788-7995-2025-4(20)-71kaz44-1967Research ArticleХИМИЧЕСКАЯ ТЕХНОЛОГИЯ (ОРИГИНАЛЬНАЯ СТАТЬЯ)CHEMICAL TECHNOLOGY (ORIGINAL ARTICLE)КОМПЛЕКСНОЕ ИССЛЕДОВАНИЕ ЭЛЕКТРОЛИТНО-ПЛАЗМЕННОГО АЗОТИРОВАНИЯ АУСТЕНИТНОЙ-НЕРЖАВЕЮЩЕЙ СТАЛИTHE EFFECT OF THE ELECTROLYTE COMPOSITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF STEEL 45 AFTER CATHODIC ELECTROLYTE-PLASMA NITRIDINGhttps://orcid.org/0000-0002-0519-3222МәулитА.MaulitA.

Алмасбек Маулит – докторант, научный сотрудник 

Восточно-Казахстанский область, г. Усть-Каменогорск, ул. Гоголя, 7Г

Область Абай, г.Семей, ул. Глинки, 20 А

Almasbek Maulit – PhD student; Researcher 

East Kazakhstan region, Ust-Kamenogorsk, Gogol str., 7GAbai region, Semey, Glinka str., 20 A

maulit.almas@gmail.comhttps://orcid.org/0000-0001-7161-2686СатбаеваЗ. А.SatbayevaZ. A.

Зарина Аскарбековна Сатбаева – доктор PhD, Science professor исследовательской школы физических и химических наук; ведущий научный сотрудник ТОО«PlasmaScience»

Восточно-Казахстанский область, г. Усть-Каменогорск, ул. Гоголя, 7Г

Область Абай, г.Семей, ул. Глинки, 20 А

Zarina Askarbekovna Satbayeva – PhD, Science Professor, Research School of Physical and Chemical Sciences; Leading Researcher

East Kazakhstan region, Ust-Kamenogorsk, Gogol str., 7G

Abai region, Semey, Glinka str., 20 A

zarinavkgu@gmail.comhttps://orcid.org/0000-0002-5879-3002КожановаР. С.KozhanovaR.

Рауан Сабырбековна Кожанова – докторант; старший научный сотрудник

Восточно-Казахстанский область, г. Усть-Каменогорск, ул. Гоголя, 7Г

Область Абай, г.Семей, ул. Глинки, 20 А

Rauan Sabyrbekovna Kozhanova – Doctoral student; Senior Researcher

East Kazakhstan region, Ust-Kamenogorsk, Gogol str., 7GAbai region, Semey, Glinka str., 20 A

kozhanovars@yandex.kzhttps://orcid.org/0000-0002-9105-3129БайжанД. Р.BaizhanD.

Дарын Рашидұлы Байжан – докторант

 Область Абай, г. Семей, ул. Глинки, 20 А 

Daryn Rashiduly Baizhan – Doctoral student

Abai region, Semey, Glinka str., 20 A

daryn.baizhan@mail.ruРүстемовА. С.RustemovA.

Ануар Саятбекұлы Рүстемов – студент специальности «Техническая физика»; ВКТУ им. Д. Серикбаева, инженер 

Восточно-Казахстанский область, г. Усть-Каменогорск, ул. Гоголя, 7Г

Anuar Sayatbekovich Rustemov – student of the specialty «Technical Physics», VKTU named after D. Serikbaev, Engineer

East Kazakhstan region, Ust-Kamenogorsk, Gogol str., 7G

anuarrustemovv05@gmail.comТОО «Plasma Science»; Шәкәрім университетКазахстан«Plasma Science» LLP; Shakarim UniversityKazakhstanШәкәрім университетКазахстанShakarim UniversityKazakhstanТОО «Plasma Science»Казахстан«Plasma Science» LLPKazakhstan20252501202614(20)606615Copyright © Мәулит А., Сатбаева З.А., Кожанова Р.С., Байжан Д.Р., Рүстемов А.С., 20262026Мәулит А., Сатбаева З.А., Кожанова Р.С., Байжан Д.Р., Рүстемов А.С.Maulit A., Satbayeva Z.A., Kozhanova R., Baizhan D., Rustemov A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://tech.vestnik.shakarim.kz/jour/article/view/1967

В настоящей работе проведено исследования спектральных характеристик электрического разряда в процессе электролитно-плазменном азотировании, структурные и фазовые изменения, происходящие в аустенитной нержавеющей стали. Обработка проводилась в электролите, содержащем 10% кальцинировання сода (Na₂CO₃), 20% карбамид (CO(NH₂)₂) и 3% аммоний хлорид (NH₄Cl) при температуре 550 °C в течение 10 минут. Эмиссионная спектроскопия показала присутствие активных форм азота (N₂⁺, N I), водорода (Hα) и кислорода (O I) в составе плазмы. Расчёт электронной плотности на основе уширения линии Hα серий Бальмера дал значение порядка 8.5 × 10¹⁸ см⁻³. Рентгенофазовый анализ выявил формирование нитридных фаз CrN и Fe₃N, а также твёрдого раствора азота в γ-Fe. Микроструктурные исследования с помощью РЭМ показали наличие трёхчленной структуры азотированного слоя: нитридной зоны, переходной области и исходный аустенитной матрицы. Энергодисперсионный рентгеновский анализ подтвердил наличие концентрационного градиента азота по глубине.

In the present work, a study was conducted on the spectral characteristics of the electric discharge during the electrolytic plasma nitriding process, as well as the structural and phase changes occurring in austenitic stainless steel. The treatment was carried out in an electrolyte containing 10% soda ash (Na₂CO₃), 20% carbamide (CO(NH₂)₂), and 3% ammonium chloride (NH₄Cl) at a temperature of 550 °C for 10 minutes. Emis-sion spectroscopy revealed the presence of active nitrogen species (N₂⁺, N I), hydrogen (Hα), and oxygen (O I) in the plasma composition. The calculation of electron density based on the broadening of the Hα line from the Balmer series yielded a value of ap-proximately 8.5 × 10¹⁸ cm⁻³. X-ray phase analysis revealed the formation of nitride phases CrN and Fe₃N, as well as a solid solution of nitrogen in γ-Fe. Microstructural investigations using SEM revealed a three-layer structure of the nitrided layer: a ni-tride zone, a transition region, and the original austenitic matrix. Energy-dispersive X-ray analysis confirmed the presence of a nitrogen concentration gradient with depth.

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