Structure and Properties of Alloys Obtained by Aluminothermic Reduction of Deep-Sea Nodules

Materials

František Laufek¹  Pavel Novák²  Alisa Tsepeleva²  Petr Dvořák²  Lucie Šulcová²  NguyenHong Vu²  Alena Michalcová²  Jaromír Kopeček³ 

[1] Czech Geological Survey, Geologická 6, 152 00 Prague 5, Czech Republic;Department of Metals and Corrosion Engineering, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic;Institute of Physics of the ASCR, v. v. i., Na Slovance 2, 182 21 Prague 8, Czech Republic;

关键词: manganese alloy;    deep-sea nodules;    aluminothermy;   

DOI  :  10.3390/ma14030561

来源: DOAJ

【 摘 要 】

This paper brings an innovative processing route of manganese deep-sea nodules, which results in completely new grades of alloys. Deep-sea nodules were processed by aluminothermic method without the extraction of individual elements, producing complexly alloyed manganese-based “natural alloys”. Three levels of the amount of aluminum were used for the aluminothermic reduction, and hence the alloys differ strongly in the amount of aluminum, which has a significant effect on their phase composition. The alloys have very high wear resistance, comparable with tool steel. The disadvantage of low-aluminum alloy is the susceptibility to local thermal cracking during friction, which occurs especially in the case of a dry sliding wear against the static partner with low thermal conductivity.

【 授权许可】

Unknown