ThaiScience  


WALAILAK JOURNAL OF SCIENCE AND TECHNOLOGY


Volume 16, No. 06, Month JUNE, Year 2019, Pages 379 - 384


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 Download PDF

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



WALAILAK JOURNAL OF SCIENCE AND TECHNOLOGY


Published by : Walailak University
Contributions welcome at : http://wjst.wu.ac.th/index.php/wjst