DC Electric Arc Furnace Application for Production of Nickel-Boron Master Alloys

Murat Alkan*, Kerem Can Tasyürek, Mehmet Bugdayci, Ahmet Turan, Onuralp Yücel

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3 Atıf (Scopus)

Özet

In this study, nickel-boron (Ni-B) alloys were produced via a carbothermic reduction starting from boric acid (H3BO3) with high-purity nickel oxide (NiO), charcoal, and wood chips in a direct current arc furnace. In electric arc furnace experiments, different starting mixtures were used, and their effects on the chemical compositions of the final Ni-B alloys were investigated. After the reduction and melting stages, Ni-B alloys were obtained by tapping from the bottom of the furnace. The samples from the designated areas were also taken and analyzed. The chemical composition of the final alloys and selected samples were measured with wet chemical analysis. The Ni-B alloys had a composition of up to 14.82 mass% B. The phase contents of the final alloys and selected samples were measured using x-ray diffraction (XRD). The XRD data helped predict possible reactions and reaction mechanisms. The material and energy balance calculations were made via the XRD Rietveld and chemical compositions. Nickel boride phases started to form 600 mm below the surface. The targeted NiB phase was detected at the tapping zone of the crucible (850–900 mm depth). The energy consumption was 1.84–4.29 kWh/kg, and the electrode consumption was 10–12 g/kg of raw material charged.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)1654-1662
Sayfa sayısı9
DergiJOM
Hacim69
Basın numarası9
DOI'lar
Yayın durumuYayınlandı - 1 Eyl 2017

Bibliyografik not

Publisher Copyright:
© 2017, The Minerals, Metals & Materials Society.

Finansman

The authors thank Sentes-BIR and ITU-BAP (Istanbul Technical University, Office of Scientific Researches Projects) for financial support of this study. The authors thank Alper Kelesoglu (Yalova University) for assistance in COMSOL modeling and Zehra Inci Kol for assistance in chemical analysis.

FinansörlerFinansör numarası
ITU-BAP
Office of Scientific Researches Projects
Istanbul Teknik Üniversitesi

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