Aluminum alloys prepared by aluminothermy of deep-sea nodules and their processing – POSTER

Borkovcová Klára - University of Chemical Technology in Prague (Czech Republic)

This work deals with the new aluminum alloys prepared by aluminothermic reduction of deep sea nodules. In aluminothermy a 100% excess of aluminum over stoichiometry was used as a reducing agent, which resulted in a new alloy with a high content of aluminum and manganese, which source was deep-sea nodules. This alloy was characterized in the state after reduction and then after crushing and sintering by „spark plasma sintering“ method at temperatures of 900 and 950 °C. Annealing heat treatment at 800 ° C for 3 hours was also tested. The hardness of prepared alloys, which were constituted of intermetallic phases, raised with the sintering temperature and also with heat treatment. The wear resistance of the samples increased significantly by crushing and sintering due to the fragmentation of the intermetallic phases.

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