Nanotubular Structure Formation on Ti-6Al-4V and Ti-Ta Alloy Surfaces by Electrochemical Methods

作者：Lee Kang; Choe Han Cheol^*; Ko Yeong Mu; Brentley W A

来源：Journal of the Korean Institute of Metals and Materials, 2012, 50(2): 164-170.

DOI：10.3365/KJMM.2012.50.2.164

• Nanotubular structure
• Ti-Ta alloy
• beta-stabilizing element
• anodizing

Nanotubular structure formation on the Ti-6Al-4V and Ti-Ta alloy surfaces by electrochemical methods has been studied using the anodizing method. A nanotube layer was formed on Ti alloys in 1.0 M H3PO4 electrolyte with small additions of F ions. The nanotube nucleation and growth of the alpha-phase and beta-phase appeared differently, and showed different morphology for Cp-Ti, Ti-6Al-4V and Ti-Ta alloys. In the alpha-phase of Cp-Ti and martensite alpha%26apos;, and in the alpha %26apos;%26apos; and beta-phase of the Ti-Ta alloy, the nanotube showed a clearly highly ordered TiO2 layer. In the case of the Ti-Ta alloy, the pore size of the nanotube was smaller than that of the Cp-Ti due to the beta-stabilizing Ta element. In the case of the Ti-6Al-4V alloy, the alpha-phase showed a stable porous structure; the beta-phase was dissolved entirely. The nanotube with two-size scale and high order showed itself on Ti-Ta alloys with increasing Ta content.

• 出版日期2012-2