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Open AccessArticle

Surface Modification of Ti-35Nb-10Ta-1.5Fe by the Double Acid-Etching Process

Instituto de Tecnología de Materiales, Universitat Politècnica de València, 46022 Valencia, Spain
Author to whom correspondence should be addressed.
Materials 2018, 11(4), 494;
Received: 20 January 2018 / Revised: 18 March 2018 / Accepted: 22 March 2018 / Published: 26 March 2018
Surface topography and composition influence the osteoblastic proliferation and osseointegration rates, which favor the biomechanical stability of bone anchoring and implants. In recent years, beta titanium alloys have been developed, and are composed of biocompatible elements, have low elastic modulus, high corrosion resistance, and mechanical properties to improve the long performance behavior of biomaterials. In the present research, the influence of the acid-etching process was studied in Ti6Al4V ELI and Ti35Nb10Ta1.5Fe. Samples were etched in a two-step acid treatment. Surface roughness parameters were quantified under a confocal microscope, topography was studied by scanning electron microscopy, and surface composition was analyzed with energy dispersive X-ray spectroscopy. The results revealed that the two-step acid treatment changes the topography of the β alloy, increases the surface area, and changes the chemical composition of the surface. Two differentiated regions were identified in the Ti35Nb10Ta1.5Fe alloy after the acid-etching process: The α + β region with higher values of mean roughness due to the lower chemical resistance of this region; and the β region with lower values of roughness parameters. View Full-Text
Keywords: titanium alloys; acid etching; surface roughness; topography; Ti-Nb-Ta-Fe; beta alloy titanium alloys; acid etching; surface roughness; topography; Ti-Nb-Ta-Fe; beta alloy
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MDPI and ACS Style

Lario, J.; Amigó, A.; Segovia, F.; Amigó, V. Surface Modification of Ti-35Nb-10Ta-1.5Fe by the Double Acid-Etching Process. Materials 2018, 11, 494.

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