Powder metallurgy of aluminium alloys with the addition of the elements from deep-sea nodules

Novák Pavel - University of Chemical Technology in Prague (Czech Republic)

Deep-sea nodules are polymetallic ores, containing manganese and other metals (especially Fe, Cu, Ni and Co). This work deals with the possibility of preparation of aluminium alloys, alloyed by the elements contained in the deep-sea nodules in natural ratio. It was be achieved by aluminothermic reduction of crushed nodules and mixing of the product with aluminium. The obtained blends were mechanically alloyed and spark plasma sintered. Microstructure, phase composition and hardness of the obtained alloys were described in dependence on the content of alloying elements and state of processing. For the homogenization of the product, a heat treatment procedure was proposed and verified.

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