Formation of Titanium Nickelide Surface Alloy under Impact of Compressive Plasma Flows on the Nickel-Titanium System

摘要

Structural-phase states of surface layers of titanium alloyed with nickel are studied after impact of plasma compression flows (CPF) on titanium previously coated with nickel. It is shown that, at the thickness of nickel coating of 3-6 μm, action of CPF with energy density in the range from 9 to 23 J/cm~2 provides formation of a surface layer containing titanium nickelide TiNi, Ti_2Ni, and a solid solution based on high-temperature titanium phase β-Ti(Ni). It is found that the modified surface layer is characterized by a fairly low modulus of elasticity (48 GPa), which makes possible its usage as a biocompatible material.