Modification of the microstructure and properties of martensitic steel during ultra-high dose high-intensity implantation of nitrogen ions; Surface and Coatings Technology; Vol. 388

Modification of the microstructure and properties of martensitic steel during ultra-high dose high-intensity implantation of nitrogen ions; Surface and Coatings Technology; Vol. 388

Bibliografiske detaljer
Parent link:Surface and Coatings Technology
Vol. 388.— 2020.— [125557, 7 p.]
Institution som forfatter: Национальный исследовательский Томский политехнический университет Инженерная школа ядерных технологий Научная лаборатория высокоинтенсивной имплантации ионов
Andre forfattere: Ryabchikov A. I. Aleksandr Ilyich, Sivin D. O. Denis Olegovich, Korneva O. S. Olga Sergeevna, Bozhko I. A. Irina Aleksandrovna, Ivanova A. I. Anna Ivanovna
Summary:Title screen
In this work, we report a study of the chemical and phase composition, structural modifications and mechanical properties of martensitic stainless steel surface layers modified by high-intensity nitrogen ion implantation using a high current beam of low-energy nitrogen ions. The effect of ultrahigh-dose implantation of nitrogen ions into steel using a high-intensity repetitively pulsed beam of nitrogen ions with a current of 0.6 A (at an ion energy of 1.2 keV) and a sample temperature of 500 °C is investigated. The fluence of ion irradiation in the range from 6 ? 1021 ions/cm2 to 2.25 ? 1021 ions/cm2 varied by changing the current density and implantation time. The studies performed using transmission electron microscopy and X-Ray diffraction analysis of the microstructure and phase composition of the implanted samples showed that the surface-doped layer formed up to 75 ?m thick and contains ferrite, iron nitride Fe4N, and chromium nitride CrN (?-phase – 70.88 vol.%, ?'-Fe4N – 16.30 vol.%, CrN – 12.82 vol.%). The obtained values of the coherent scattering region size of the formed chromium nitride and iron nitride indicate a very high dispersion of the elements in the ion-doped layer substructure. The data on changes in the surface morphology and microhardness of the near-surface layers are presented.
Режим доступа: по договору с организацией-держателем ресурса
Sprog:engelsk
Udgivet: 2020
Fag:
электронный ресурс
труды учёных ТПУ
low-energy nitrogen ion
high-intensity implantation
ultra-high dose implantation
martensitic stainless steel
ионы азота
высокоинтенсивные технологии
имплантация
нержавеющая сталь
Online adgang:https://doi.org/10.1016/j.surfcoat.2020.125557
Format: Electronisk Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663035

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