ANALYTICAL DATA FOR NiO REDUCTION AND Al۳Ni۲ INTERMETALLIC COMPOUND FORMATION

In this research, the nickel oxide was dissolved in cryolite at temperatures of ۸۸۰, ۹۴۰ and ۱۰۰۰°C. In order to reduce the nickel oxide, aluminum was added to the salt. Simultaneously the nickel oxide was reduced and Al۳Ni۲ intermetallic compound was formed. In the duration intervals of ۲.۵-۴۰ minutes samples of the salt and metallic phases were taken. The variation of the nickel content in metallic and salt samples was determined by the AAS. The results indicate that increasing the temperature and duration has a positive effect on the reduction process and Al۳Ni۲ intermetallic compound formation. The nickel content in the metallic sample has its highest amount at ۱۰۰۰°C in ۱۰ minutes. Furthermore, practical results of the studies of nickel content variations in metallic and salt samples confirm the data obtained from theoretical calculations.

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Keywords: Al۳Ni۲ intermetallic compounds ، Analytical data ، Mass equilibrium.