Açık Akademik Arşiv Sistemi

The effect of process parameters on microstructure and corrosion behavior of AISI 4140 steel modified by pulse plasma treatment

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dc.contributor.authors oezbek, Yildiz Yarali; Demirkiran, Ayse Suekran
dc.date.accessioned 2023-01-24T12:09:00Z
dc.date.available 2023-01-24T12:09:00Z
dc.identifier.issn 1847-9286
dc.identifier.uri http://dx.doi.org/10.5599/jese.1259
dc.identifier.uri https://hdl.handle.net/20.500.12619/99746
dc.description Bu yayın 06.11.1981 tarihli ve 17506 sayılı Resmî Gazete’de yayımlanan 2547 sayılı Yükseköğretim Kanunu’nun 4/c, 12/c, 42/c ve 42/d maddelerine dayalı 12/12/2019 tarih, 543 sayılı ve 05 numaralı Üniversite Senato Kararı ile hazırlanan Sakarya Üniversitesi Açık Bilim ve Açık Akademik Arşiv Yönergesi gereğince telif haklarına uygun olan nüsha açık akademik arşiv sistemine açık erişim olarak yüklenmiştir.
dc.description.abstract The pulse plasma system is a surface modification method applied to steel samples. In the present study, the effect of the nozzle distance and pulse number parameters were investigated on the modification process. AISI 4140 steel was preferred as the substrate for modification. In this system, the battery capacity and voltage were constant, and, were selected as 800 mF and 3000 V, respectively. The AISI 4140 steel samples were modified by applying 5, 10, and 15 pulses with 40, 50 and 60 mm nozzle distance. The molybdenum consumable electrode was used during the process. The modified surfaces were examined by optical and scanning electron microscope (SEM) and analyzed by X-ray diffractometer (XRD). Vickers microhardness on the cross-section surface of the samples was measured under a load of 50 g for 15 s. Finally, the specimens were exposed to corrosion in 0.5 M NaCl solution. Corrosion tests were realized using the potentiodynamic polarization method. A modified layer on the steel was determined to consist of two layers, the compound layer and the diffusion layer. It was observed that the structure and thickness of the modified layer affect by pulse number and nozzle distance. New phases such as Fe2N, FeN, MoN, and gamma-Fe in the modified layer have occurred. The hardness value of the treated sample has risen about 4-5 times than the untreated, depending on applied process parameters. In general, the pulse plasma treatment has improved the corrosion resistance of treated samples. It was observed that while intergranular corrosion has formed on the unmodified surface, pitting corrosion has appeared on the unmodified surfaces.
dc.language English
dc.language.iso eng
dc.publisher INT ASSOC PHYSICAL CHEMISTS-IAPC
dc.relation.isversionof 10.5599/jese.1259
dc.subject Electrochemistry
dc.subject Surface
dc.subject hardness
dc.subject coating
dc.subject molybdenum
dc.title The effect of process parameters on microstructure and corrosion behavior of AISI 4140 steel modified by pulse plasma treatment
dc.type Article
dc.type Early Access
dc.relation.journal JOURNAL OF ELECTROCHEMICAL SCIENCE AND ENGINEERING
dc.identifier.doi 10.5599/jese.1259
dc.contributor.author oezbek, Yildiz Yarali
dc.contributor.author Demirkiran, Ayse Suekran
dc.relation.publicationcategory Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rights.openaccessdesignations gold, Green Published


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