Intermetallides in the Structure of Gas-Thermal Coating With Additives of Complex Concentrate of Rare-Earth Elements

摘要

The article presents the results of researches of electrometallic coatings made of flux-cored wires with modifying additives of complex concentrate of rare-earth elements, obtained by extraction and leaching from ores of Tomtorskiy rare-metal deposit of the Republic of Sakha (Yakutia). Metallographic studies of the structure and properties of coatings revealed the presence of heterogeneous structures with increased values of microhardness. The conducted phase analysis showed the presence of intermetallic compounds Al-Ni in the structure of coatings caused by the influence of rare-earth modifying additives on the morphology of the structure. As a result of the conducted works it is shown that microalloying by rare-earth elements leads to essential improvement of structural and phase composition and increase of physical and mechanical properties at creation of new materials.