Nitriding of VT3-1 titanium alloy in a glow discharge with hollow cathode

5th International Congress on Energy Fluxes and Radiation Effects 2016

Budilov, V.V.^1 ; Ramazanov, K.N.^1 ; Zolotov, I.V.^1 ; Khusainov, Yu G.^1 ; Vardanyan, E.L.^1

Ufa State Aviation Technical University, Department of Mechanical Engineering, 12 K. Marx Str., Ufa, Russia^1

关键词: Gaseous mixture;    Hardened layers;    Hollow cathodes;    Ion nitriding;    Research results;    Surface layers;    Surface microhardness;    Working gas;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/830/1/012094/pdf
DOI  :  10.1088/1742-6596/830/1/012094

来源: IOP

【 摘 要 】

The paper presents research results of VT3-1 titanium alloy samples subjected to nitriding in glow discharge with a hollow cathode. The influence of working gas composition on the thickness of a hardened layer at nitriding in glow discharge with a hollow cathode was studied. It was found that the increase of argon up to 80-90% in gaseous mixture during nitriding in glow discharge with a hollow cathode leads to the increase of the hardened layer thickness to ∼ 90 microns and surface microhardness to ∼ 850 HV0,1, and contributes to a smaller gradient of the surface layer microhardness. The hardened layer on the surface of VT3-1 titanium alloy obtained upon nitriding in glow discharge with a hollow cathode is less fragile and resists plastic deformation more efficiently in comparison with the hardened layer obtained via traditional ion nitriding.