Journal
MATERIALS LETTERS
Volume 181, Issue -, Pages 78-81Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.05.144
Keywords
Plasma nitriding; Surfaces; Indentation and hardness; Phase transformation; Corrosion
Funding
- Higher Education Commission of Pakistan Research Project [20-2002]
- Quaid-i-Azam University Research Fund for Plasma Physics Laboratory
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The aim of this work is to investigate the influence of cathodic cage size on active screen plasma nitriding of AISI 304 stainless steels. The specimens are nitrided in fixed processing conditions while using CC with diameters of 13, 15, 17, 19 and 21 cm. The surface morphology, compound layer thickness and elemental composition, phase composition, hardness profile and corrosion resistance of the processed specimens is assessed. The results show that when the CC diameter is reduced, surface hardness profile and corrosion resistance significantly improve, while iron nitrides (Fe2-3N, Fe4N) are formed along with the expanded austenite phase (gamma(N)). (C) 2016 Elsevier B.V. All rights reserved.
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