Surface modification of lowalloy steel by plasma 
nitriding with hollow cathode discharge

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Journal of Dalian Maritime University ›› 2014, Vol. 40 ›› Issue (3) : 123-125.

Surface modification of lowalloy steel by plasma  nitriding with hollow cathode discharge

LI Yang¹, WANG Liang², ZHAO Xiang-jin¹, LU Yang¹, YANG Long-fei¹

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Abstract

To overcome the common problems associated with the conventional DC plasma nitriding, this paper presented technology of plasma nitriding with hollow cathode discharge. The nitriding of low alloy steel was carried out at cathode potential in a space enclosed by an active screen which consisted of two cylinders with different diameter. Results indicate that the plasma formed on the bilayer active screen, which contains a mixture of ions, electrons and other active nitriding species. The low alloy steel is effectively nitrided in the plasma atmosphere enclosed by bilayer active screen. Meanwhile the edge effect associated with conventional plasma nitriding can be completely avoided.

Key words

low alloy steel / plasma nitriding / hollow cathode discharge

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LI Yang, WANG Liang, ZHAO Xiang-jin, LU Yang, YANG Long-fei. Surface modification of lowalloy steel by plasma  nitriding with hollow cathode discharge[J]. Journal of Dalian Maritime University. 2014, 40(3): 123-125

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