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Browsing by Author "Iyi, O."

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    Effect of Nickel Content on the Boronising Behaviour of Permalloys
    (Scibulcom Ltd, 2015) Ucar, N.; Karakaş, Mustafa Serdar; Iyi, O.; Uçar, Nuri; Calik, A.; Karakas, M. S.; 48915; Malzeme Bilimi ve Mühendisliği; Bankacılık ve Finans; 06.07. Malzeme Bilimi ve Mühendisliği; 03.01. Bankacılık ve Finans; 03. İktisadi ve İdari Birimler Fakültesi; 06. Mühendislik Fakültesi; 01. Çankaya Üniversitesi
    Permalloys with nickel contents ranging from 60 to 90% were boronised in a solid medium using the powder pack method. In this method, commercial Ekabor-II powders were thoroughly mixed with ferro-silicon powders to form the boronising medium. The samples were boronised in an electrical resistance furnace for 5 h at 1173 K under atmospheric pressure. The results showed that borosilicide and boride layers were formed on the surface of boronised permalloys, with average hardness of 900-1000 HV0.1. The average thickness of the multilayer coating was 90 mu m, and did not show significant change with Ni content within the range studied. The saw-tooth morphology of the boride layers were smoothened with increasing nickel content.