A Study on the Surface Hardness Obtained by Nitriding with a Plasma Focus Machine

Thiam Oun TEH, Arwinder SINGH, Jalil ALI, Chee An NG, Xue Yinn NG, Jun Wen WONG, Sor Heoh SAW, Sing LEE

Abstract


A dense plasma focus (DPF) machine, being a source of a powerful ion beam, can be useful in the modification of the surface properties of materials. Experimental investigations were carried out with a 3.3 kJ Mather-type DPF operating in nitrogen at a low chamber pressure with low carbon steel as the target material. It was found that the DPF ion beam implanted nitrogen onto the steel surface thereby causing a marked increase in surface hardness. The variation of pressure and target distances appear to affect the outcome of this nitriding technique with optimum hardness reached at the pressure setting of 1 Torr and at a target distance of 40 mm from the anode.

Keywords


Dense plasma focus, hardening, nitriding, wear, corrosion

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References


M Lepicka and M Gradzka-Dahlke. Direct current and pulsed direct current plasma nitriding of ferrous materials: A critical review. Acta Mech. Automat. 2016; 10, 150-8.

A Bernal. Investigation on Nitriding with Emphasis in Plasma Nitriding Process, Current Technology and Equipment. Materials Processing, Royal Institute of Technology, KTH, Stockholm, 2006.

S Al-Hawat, M Soukieh, MA Kharoub and W Al-Sadat. Using Mather-type plasma focus device for surface modification of AISI304 steel. Vacuum 2010; 84, 907-12.

F Sonmez and A Demir. Analytical relations between hardness and strain for cold formed parts. J. Mater. Proc. Tech. 2007; 186, 163-73.

S Lee and SH Saw. Plasma focus ion beam fluence and flux: Scaling with stored energy. Phys. Plasmas 2012; 19, 112703.

S Lee and SH Saw. Plasma focus ion beam fluence and flux: For various gases. Phys. Plasmas 2013; 20, 062702.

M Akel, SA Salo, SH Saw and S Lee. Properties of ion beams generated by nitrogen plasma focus, J. Fusion Energ. 2014; 33, 189-97.

RS Rawat. Dense Plasma Focus -High-Energy-Density Pulsed Plasma Device Based Novel Facility for Controlled Material Processing and Synthesis. Plasma Science and Technology for Emerging Economies, AAAPT Experience, 2017, p. 39-112.

S Lee and SH Saw. The Plasma Focus: Numerical Experiments, Insights and Applications. Plasma Science and Technology for Emerging Economies, AAAPT Experience, 2017, p. 113-232.


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