Combined surface modification of commercial aluminum

7th International Conference Radiation-thermal Effects and Processes in Inorganic Materials

材料科学;物理学

Ivanov, Yu^1,2,3 ; Lopatin, I.^1 ; Akhmadeev, Yu^1 ; Petrikova, E.^2 ; Teresov, A.^1 ; Shugurov, V.^1 ; Tolkachev, O.^3 ; Koval, N.^1

Institute of High Current Electronics SB RAS, Tomsk, Russia^1

Laboratory of Low Temperature Plasmas, National Research Tomsk State University, Tomsk, Russia^2

National Research Tomsk Polytechnic University, Tomsk, Russia^3

关键词: Intense pulsed electron beam;    Low pressure arc;    Multilayer structures;    Nano-sized particles;    Structure and properties;    Surface microhardness;    Surface strengths;    Thin metal films;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/168/1/012043/pdf
DOI  :  10.1088/1757-899X/168/1/012043

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The paper analyzes research data on the structure and properties of surface layers of commercially pure A7-grade aluminum subjected to treatment that combines deposition of a thin metal film, intense pulsed electron beam irradiation, and nitriding in low-pressure arc plasma. The analysis shows that the combined method of surface modification provides the formation of a multilayer structure with submicro- and nano-sized phases in the material through a depth of up to 40 μm, allowing a manifold increase in its surface microhardness and wear resistance (up to 4 and 9 times, respectively) compared to the material core. The main factors responsible for the high surface strength are the saturation of the aluminum lattice with nitrogen atoms and the formation of nano-sized particles of aluminum nitride and iron aluminides.