Ti-based surface alloy formed on AISI 316 L austenite steel surface using low-energy high-current electron beam

Titanium and Ti-based alloys possess good biocompatibility and excellent corrosion resistance. This paper is devoted to an effort to create Ti-based surface alloy on specimens made of the AISI 316 L austenite steel. The Ti-based surface alloy is created by the Ti film deposition using the magnetron sputtering method followed by the low-energy high-current electron beam irradiation of the Ti film-316 L steel substrate system sur -face. Transmission electron microscopy shows that the surface alloy consists of several sublayers having different structures and phase compositions. In particular, these are alpha-Ti; TiSi2; FeTi and Fe2Ti; Fe2SiTi; Fe2Ti3O9 phases and more complex Cr13Fe35Ni3Ti7, Cr12Fe32Mo7Ni7, Cr12Fe36Mo10, Mo5Cr6Fe18 phases nearby the substrate. Phase compositions of the surface alloy layers are determined by the change in the chemical composition of the titanium-steel system and the heat depth distribution. It is shown that the formation of the Ti-based surface alloy on the AISI 316 L austenite steel surface, provides the increase in the polar component of the free surface energy from 3.2% to 34.5%. (c) 2023 Elsevier B.V. All rights reserved.

Automated summary

This paper focuses on the creation of a Ti-based surface alloy on AISI 316L austenite steel specimens through Ti film deposition using magnetron sputtering and low-energy high-current electron beam irradiation. The surface alloy consists of several sublayers with different structures and phase compositions. The formation of the Ti-based surface alloy increases the polar component of the free surface energy from 3.2% to 34.5% on the AISI 316L austenite steel surface.