NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(11) [November 2011] >

Title: High density plasma beam source for nitriding
Authors: Ganguli, B
Keywords: Microwave plasma
X-ray diffraction
Iron nitride
Chromium nitride
Issue Date: Nov-2011
Publisher: NISCAIR-CSIR, India
Abstract: A high density plasma beam source has been developed for the purpose of surface treatment and study of low energy ions and neutrals with surfaces. The plasma is generated by pulse microwave power at 2.45 GHz. A pair of Helmholtz coils is used for generating axial magnetic field of 436 G which is also responsible for the production of plasma inside a stainless steel tube of 26 mm internal diameter. The plasma particles follow the axial magnetic field lines and hence, form a beam of same diameter as the internal diameter of the SS tube. The current measured by an interceptor plate (negatively biased) is about 60 mA while the plasma density is determined to be approximately 1.1X1012 cm-3 at the center and falling off to about 1X1011 cm-3 at 1 cm away from the center. The plasma source using a mixture of nitrogen and hydrogen (1:2) was used successfully to nitride a sample (diameter 16 mm) of SS201 at a low temperature of 400°C. The surface hardness achieved is rather high (1990 HV) which is more than five-fold increase compared to untreated surface (358 HV). The depth of the nitriding layer was found to be 26 microns. XRD results indicate efficient conversion of chromium to chromium nitride by the high plasma density of the present source accounting for the very efficient nitriding process.
Page(s): 759-764
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.49(11) [November 2011]

Files in This Item:

File Description SizeFormat
IJPAP 49(11) 759-764.pdf248.12 kBAdobe PDFView/Open
 Current Page Visits: 186 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 165682 since 01-Sep-2015  Last updated on 27-Jun-2016Webmaster: