Abstract
The phase composition, the structure and the morphology of the surface of the VT1-0 titanium modified by copper ions with an energy of ∼0.5 … 2.5 keV and an ion current density of ∼2 … 20 mA/cm2 have been investigated by X-ray, SEM and TEM. It has been established that there are the intermetallic phases of the Cu-Ti equilibrium diagram in the surface layer during the treatment of the VT-10 titanium by copper ions. The modified surface layer in the cross section is divided into two layers up to 1 μm and from 1 μm up to 4.5–5.0 μm in thickness depending on the treatment time. Two-level micro and nanoporous nanocrystalline structure is formed in modified layer. It has been found that the phase structure and the morphology of the surface layers of the VT1-0 alloys depend on the treatment time.
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