Abstract
Due to uncertain availability of nickel at reasonable prices in the world market for the manufacture of alnico magnets for diverse uses in the light electrical industry, there is an urgent need for their replacement by the barium ferrite magnets which can easily be made at low cost from the indigenously occurring raw materials. The ferrite magnets are made from principal ingredients barium carbonate and iron oxide by conventional powder metallurgy techniques employed for the fabrication of metal and ceramic components. The paper describes in some detail various steps involved in the manufacture of these magnets and different items of machinery required at each step. Importance of proper mixing, ball milling, compacting and sintering to obtain optimum properties is also discussed.
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