Abstract

The XRD and TEM investigations of gradient nano-, submicron- and microstructural states in the surface TiNi layers alloying by tantalum after pulsed electron-beam treatment was carried out. It was experimentally found that the modified TiNi surface area takes on a layered structure consisting of phases based on TiNi (B2, R and B19') and tantalum based phases (α-Ta, Ta2Ni and Ta2O5). The liquid-phase mixing of «Ta(film)/TiNi(substrate)» system resulted in phase formation of ternary compound (Ti,Ta)Ni with B2 and B19' structures.

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