IMPROVED NITRIDING CAPABILITY OF NONALLOYED STEELS ASSISTED WITH ACTIVE SCREEN PLASMA TREATMENT

M. Naeem, H. A. Raza, M. Shafiq, Farhat Shabbir, Javed Iqbal, J. C. Díaz-Guillén and C. M. Lopez-Badillo
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M. Naeem: Department of Physics, Women University of AJ&K, Bagh 12500, Pakistan
H. A. Raza: #x2020;Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
M. Shafiq: #x2020;Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
Farhat Shabbir: #x2020;Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
Javed Iqbal: #x2021;Department of Physics, University of AJ&K, Muzafarabad 13100, Pakistan
J. C. Díaz-Guillén: #xA7;CONACYT, Corporación Mexicana de Investigación en Materiales, Saltillo, Coahuila 25290, México
C. M. Lopez-Badillo: #xB6;Universidad Autónoma de Coahuila, Facultad de Ciencias Químicas, Saltillo, Coahuila 25280, México

Surface Review and Letters (SRL), 2020, vol. 27, issue 03, 1-5

Abstract: The nonalloyed steels are very cost-effective, but their usefulness in numerous applications is imbedded due to low mechanical strength. The strength of several steels can be improved by nitriding; however, nonalloyed steels are not suitable. They can be nitrided by introducing special nitriding alloys (like chromium, aluminum, etc.) during manufacturing or some interlayer deposition, but it is quite expensive. The aim of this study is to improve nitriding capability of nonalloyed steels without any additional treatment. This is done by using alloyed stainless steel active screen in active screen plasma treatment, which provides an adequate amount of chromium to form stable and hard nitrides. The processed samples are characterized by X-ray diffraction, scanning electron microscope, energy dispersive spectroscopy, pin-on-disc wear tester, hardness tester and potentiodynamic polarization test.

Keywords: Active screen plasma; nonalloyed steels; surfaces; indentation and hardness; phase transformation (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X1950118X

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