Quality Surface Analysis for Polarized Grid Plasma Nitridings
Keywords:
plasma nitriding, cathodic active screen grid, hollow cathode effect, scanning electron microscopy
Abstract
For the study regarding the effect of the polarized grid a prototype plasma nitriding facility was used. A polarized grid was placed inside the working chamber, into the space between the anode and cathode, a negative polarised grid.
The sample used for the tests has a special configuration, provided with three different diameter holes, to highlight the hollow cathode effect on the holes near by sample areas.
The chemical analysis for the deposited surface layer was made.
References
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[2]. Axinte M. et. al. - Facility for study heating and diffusion process, using a ionic triode in a plasma nitriding installation, Tehnomus XV, Suceava, pp. 223-228, (2009).
[3]. Corujeira Gallo S., Dong H. - Study of active screen plasma processing conditions for carburising and nitriding austenitic stainless steel, Surface & Coatings Technology 203, pp. 3669-3675, (2009).
[4]. Janosi S. et al. - Controlled hollow cathode effect: new possibilities for heating low-pressure furnaces, Metal Science and Heat Treatment, Vol. 46, Nos.7–8, pp. 310-316, (2004).
[5]. Li C. X. et al. - Active screen plasma nitriding of austenitic stainless steel, Surface Engineering, Vol. 18, No. 6, pp. 453-457, (2002).
[6]. Vermesan G., Deac V. - Procese fizico-chimice la nitrurarea ionica, Bazele tehnologice ale nitrurarii ionice, Editura Universitatii din Sibiu, pp. 26-35, Sibiu, (1992).
[7]. S.D. de Souza, M. Kapp, M. Olzon-Dionysio, M. Campos - Influence of gas nitriding pressure on the surface properties of ASTM F138 stainless steel. Surface & Coatings Technology 204 pp. 2976–2980, (2010).
[8]. K.J.B. Ribeiro et al. - Industrial application of AISI 4340 steels treateated in cathodic cage plasma nitriding technique, Materials Science and Engineering A 479 pp 142–147, (2008).
Published
2013-03-15
How to Cite
1.
AXINTE M, PERJU M-C, NEJNERU C, HOPULELE I, CIMPOEŞU I. Quality Surface Analysis for Polarized Grid Plasma Nitridings. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Mar.2013 [cited 27Apr.2024];36(1):51-6. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/2852
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