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Argon gas concentration effects on nanostructured molybdenum nitride layer growth using 100 Hz pulsed dc glow discharge

Published online by Cambridge University Press:  17 August 2012

U. Ikhlaq ,
R. Ahmad ,
S. Saleem ,
M.S. Shah ,
Umm-i-Kalsoom ,
N. Khan  and
N. Khalid
U. Ikhlaq
Affiliation:
Department of Physics, Government College University, Lahore 54000, Pakistan
R. Ahmad*
Affiliation:
Centre for Advanced Studies in Physics (CASP), Government College University, Lahore 54000, Pakistan
S. Saleem
Affiliation:
Department of Physics, Government College University, Lahore 54000, Pakistan
M.S. Shah
Affiliation:
Department of Physics, Government College University, Lahore 54000, Pakistan
Umm-i-Kalsoom
Affiliation:
Department of Physics, Government College University, Lahore 54000, Pakistan
N. Khan
Affiliation:
Department of Physics, Government College University, Lahore 54000, Pakistan
N. Khalid
Affiliation:
Department of Physics, Government College University, Lahore 54000, Pakistan
*
ae-mail: ahriaz@gcu.edu.pk
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Abstract

The effect of argon concentration (10%–40%) on the surface properties of molybdenum is studied in nitrogen-argon mixture using 100 Hz pulsed dc glow discharge. The analysis is carried out by using X-ray diffractometer (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and Vickers microhardness tester to investigate surface properties of the nitrided samples. XRD results exhibit the formation of molybdenum nitrides. Crystallite size analysis and SEM morphology confirm the growth of nanostructured molybdenum nitride layers. Moreover, significant increase in surface hardness (by a factor of about two times) is found when the sample is treated for 30% argon in nitrogen-argon mixed plasma.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 59 , Issue 2 , August 2012 , 20801
Copyright
© EDP Sciences, 2012

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