Plasma-arc surface modification of metals in a liquid medium

20th International Scientific and Research Conference "Metallurgy: Technologies, Innovation, Quality. Metallurgy-2017"

Balanovsky, A.E.^1 ; Shtayger, M.G.^2 ; Kondrat'Ev, V.V.^1 ; Van Huy, Vu^1 ; Karlina, A.I.^1

Irkutsk National Research Technical University, 83 Lermontov street, Irkutsk

664074, Russia^1

MC Mechel Steel, 1 Krasnoarmeysky street, Moscow

DH1, Russia^2

关键词: After-treatment;    Carbon and nitrogen;    Hardened layers;    High carbon steels;    Main parameters;    Plasma electric-arc;    Plasma modifications;    Surface layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/411/1/012013/pdf
DOI  :  10.1088/1757-899X/411/1/012013

来源: IOP

【 摘 要 】

The method of saturation of the steel surface with carbon under the action of a plasma electric arc in a liquid is considered. The microstructure and microhardness of the hardened layer after treatment using this method were studied. It is established that during the time of plasma action of 0.1-1c the surface layer is saturated with carbon and nitrogen to the level of concentration of high-carbon steel. Microstructures and characteristics of the metal surface after plasma modification in a liquid medium were studied. The main parameters of the modified layer were determined: depth of the layer is 15-1200 μm, microhardness reaches 7.000-14.000 MPa.