Modeling of the Electron Beam Current during the Pulse for Alloying the Surface of Stainless Steel with Titanium and Aluminum

IF 0.5 Q4 PHYSICS, CONDENSED MATTER
D. A. Shpanov, P. V. Moskvin, E. A. Petrikova, Yu. F. Ivanov, M. S. Vorobyov
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引用次数: 0

Abstract

By irradiating the the “film (Ti)/film (Al)/(12Kh18N10T) substrate” system with a low (up to 25 keV) electron beam modulated during a pulse (up to 1 ms), the wear rate of the steel surface was reduced by ≈1300 times at a constant high (0.6–0.73) dry coefficient friction and a slight change in the microhardness of the surface. The application of Ti and Al films with a thickness of 5 microns was carried out by the method of electric arc plasma-assisted sputtering of cathodes made of technically pure titanium grade VT1-0 and technically pure aluminum grade A7. The irradiation of the “film (Ti)/film (Al)/(12Kh18N10T) substrate” system is performed by an electron source with a plasma cathode. The irradiation modes were selected based on the results of numerical beam modeling in Comsol Multiphysics to ensure the fastest heating of the sample to the required temperatures and to maintain this temperature for a given time. Electron beam alloying of 12X18H10T steel with titanium and aluminum has not been studied before. The methods of X-ray diffraction analysis, scanning and transmission diffraction electron microscopy were used to study the elemental and phase composition, the state of the defective substructure of samples irradiated with an electron beam in the identified optimal mode. The patterns of evolution of the defective substructure, phase and elemental composition, microhardness, wear resistance and coefficient of friction of the “film (Ti)/film (Al)/(12Kh18N10T) substrate” system subjected to electron beam processing have been revealed. Possible applications of this type of processing of steel parts for agriculture and mechanical engineering are indicated.

Abstract Image

不锈钢表面钛铝合金化脉冲过程中电子束电流的建模
采用脉冲(1 ms)调制的低(25 keV)电子束辐照“薄膜(Ti)/薄膜(Al)/(12Kh18N10T)衬底”体系,在恒定的高(0.6 ~ 0.73)干摩擦系数和表面显微硬度的微小变化下,钢表面的磨损率降低了约1300倍。采用电弧等离子体辅助溅射的方法,对技术纯钛级VT1-0和技术纯铝级A7的阴极进行了厚度为5微米的Ti和Al薄膜的应用。“薄膜(Ti)/薄膜(Al)/(12Kh18N10T)衬底”体系的辐照由带等离子体阴极的电子源完成。根据Comsol Multiphysics中的数值光束建模结果选择辐照模式,以确保样品最快加热到所需温度并在给定时间内保持该温度。12X18H10T钢与钛、铝的电子束合金化研究尚未见报道。采用x射线衍射分析、扫描和透射衍射电镜等方法,研究了在确定的最优模式下,经电子束辐照后样品的元素组成、物相组成、缺陷子结构的状态。揭示了电子束处理下“薄膜(Ti)/薄膜(Al)/(12Kh18N10T)基体”体系缺陷亚结构、相和元素组成、显微硬度、耐磨性和摩擦系数的演变规律。指出了这种加工方法在农业和机械工程领域的应用前景。
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来源期刊
CiteScore
0.90
自引率
25.00%
发文量
144
审稿时长
3-8 weeks
期刊介绍: Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques publishes original articles on the topical problems of solid-state physics, materials science, experimental techniques, condensed media, nanostructures, surfaces of thin films, and phase boundaries: geometric and energetical structures of surfaces, the methods of computer simulations; physical and chemical properties and their changes upon radiation and other treatments; the methods of studies of films and surface layers of crystals (XRD, XPS, synchrotron radiation, neutron and electron diffraction, electron microscopic, scanning tunneling microscopic, atomic force microscopic studies, and other methods that provide data on the surfaces and thin films). Articles related to the methods and technics of structure studies are the focus of the journal. The journal accepts manuscripts of regular articles and reviews in English or Russian language from authors of all countries. All manuscripts are peer-reviewed.
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