Intermetallics

The evaluation of NiAl- and TiAl-based intermetallic coatings produced on the AISI 1010 steel by an electric current-activated sintering method

“…The hardness of the TiAl intermetallic compound was approximately 200 HV. The different hardness values for the different production conditions indicate the strong effect of microstructure variations on the mechanical behaviour [4].…”

“…In the case of aluminide coatings, the formation of surface oxides, mainly Al 2 O 3 , provides protection because of the oxides' sufficiently slow growth rates [2]. NiAl and TiAl are materials that have potential uses in the aircraft and automotive industries because they have a high melting temperature (1911 K, 1713 K), a low density (5.91 g/cm 3 , w3.9 g/ cm 3 ), good thermal conductivity (76 W/m$K, 22 W/m$K), and excellent corrosion resistance at high temperatures [3,4]. If NiAl and TiAl coatings on carbon steel are obtained, the oxidation and corrosion resistance, as well as the substrate, will be improved.…”