Non-self-sustained low-pressure glow discharge for nitriding steels and alloys

25th International Conference on Vacuum Technique and Technology

Ostroverkhov, E.V.^1 ; Denisov, V.V.^1 ; Denisova, Yu. A.^1 ; Koval, N.N.^1 ; Lopatin, I.V.^1

Institute of High Current Electronics SB RAS, Tomsk

634055, Russia^1

关键词: Die steels;    Hollow cathode glow discharge;    Low pressure glow discharges;    Low temperature nitriding;    Negative bias;    Nitrided;    Nitriding steel;    Structural steels;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/387/1/012056/pdf
DOI  :  10.1088/1757-899X/387/1/012056

来源: IOP

【 摘 要 】

Structural steel 40Cr and die steels 8Cr4W2MoVSi2 and Cr12Mo were nitrided in the plasma of a non-self-sustained hollow-cathode glow discharge at a pressure of 1 Pa, negative bias of 300 V, and temperature of 520 °C and 400 °C. The method has been shown promising for low-temperature nitriding of steels to a depth of several tens of micrometers with minimum tempering.