Browsing by Author "Eski, Özkan"

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    FeW -SiC Esaslı Kompozit Kaplamaların Mikro Yapı ve Aşınma özellikleri
    (International Advanced Technologies Symposium (IATS’11), 16-18 May 2011, Elazığ, Turkey, 2011) Eski, Özkan; Islak, Serkan; Buytoz, Soner
    In this paper, FeW+SiC based metal matrix composite (MMC) coating layer on the AISI 304 stainless steel were formed by gas tungsten arc (GTA) weld process. Rate of SiC in the produced coating was changed as 10, 25 and 50 wt. % in order to investigate the effect of silicon carbide (SiC) on the microstructure, hardness and abrasive wear properties. Optical microscope (OM), scanning electron microscopy (SEM) equipped with an energy dispersive X-ray spectrometer (EDS) and X-ray diffraction (XRD) were employed for studying the microstructure and elemental analysis of the coatings. Optical and SEM observations showed that coating layer was uniformly bonded to substrate. The formation of Fe2C, Cr7C3 , W2C carbides ve Fe2Si, CrSi2 silicides has been determined in the microstructure. It was concluded that FeW-25 % SiC composite coating was the most suitable combination as a result of the study on the properties of hardness and wear performance.
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    Microstructural and wear properties of FeW-SiC based composite coatings produced by tungsten inert gas (TIG) surfacing process
    (Optoelectronics and Advanced Materials – Rapid Communications, Volume: 5, No: 6, 2011, p. 65-72, 2011) Islak, Serkan; Eski, Özkan; Buytoz, Soner
    In this study, SiC reinforced and FeW based metal matrix composite (MMC) was produced on substrate of AISI 304 stainless steel using tungsten inert gas (TIG) surfacing process. In order to examine the effect of SiC on microstructure, hardness and abrasive wear properties inside FeW matrix, SiC was changed by ratios of 10, 25, and 50% by weight. Phase compound and microstructure of coating layers were examined using X-ray diffractometer (XRD) and scanning electron microscope (SEM). Wear behaviours of samples were evaluated using pin-on disc sliding wear tests. It was found that Fe2C, Cr7C3, W2C carbide and Fe2Si, CrSi2 silica were formed in the microstructure. The studies conducted concluded that FeW-25 wt. % SiC composite coating was the most appropriate combination in terms of hardness and wear performance.
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    Microstructure and microhardness characterization of Cr3C2-SiC Coatings Produced Using the Plasma Transferred Arc Metho
    (MP-Materials Testing-Materials and Components Technology and Application, 54 (11-12), pp. 793-799, 2012, 2012) Islak, Serkan; Eski, Özkan; Buytoz, Soner; Karagöz, Muzaffer; Stokes, Joseph; Ireland, Dublin
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    Microstructure and microhardness characterization of Cr3C2-SiC Coatings Produced Using the Plasma Transferred Arc Methot
    (MP-Materials Testing-Materials and Components Technology and Application, 54 (11-12), pp. 793-799, 2012, 2012) Islak, Serkan; Eski, Özkan; Buytoz, Soner; Karagöz, Muzaffer; Stokes, Joseph; Ireland, Dublin