Evolution of rolling and recrystallization textures in a Ti-35Nb-7Zr-5Ta alloy and its effects on the growth of TiO2 nanotubes

• Grant number: 17/16715-0
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: November 01, 2017
• End date: December 31, 2021
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Rubens Caram Junior
• Grantee: Leonardo Fanton
• Host Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated scholarship(s): 19/01760-5 - Smart drug delivery system based on TiO2 nanotubes grown over a beta-type Ti medical alloy., BE.EP.PD

Abstract

The titanium and its alloys, despite being a relatively expensive class of metal, have important applications in the aerospace and medical industry. While its high specific strength makes them attractive in the aerospace field, where weight reduction is important, its excellent biocompatibility and great corrosion resistance make it a great choice for fabrication of orthopedic and dental implants. The oxide layer present in the surface of titanium-based components provides excellent corrosion resistance in aqueous mediums. Additionally, its lower elastic modulus, closer to that of the bone tissues, reduces the stress shielding effect. The Ti-35Nb-7Zr-5Ta alloy is a biocompatible beta-titanium alloy with low elastic modulus and high mechanical strength. It is free of toxic elements and is becoming an interesting choice for fabrication of implant devices. The control of crystallographic texture is a known way to modify properties and generate anisotropy in metallic materials. Mechanical strength, corrosion resistance and biocompatibility are some examples of properties that are dependent on the material's texture. The objective of this study is to evaluate the crystallographic texture evolution in the Ti-35Nb-7Zr-5Ta alloy after several processing routes involving rolling and recrystallization heat treatment. Texture will be measured by X-ray diffraction (XRD) and electron backscatter diffraction (EBSD). In a later stage, it will be analyzed the texture effect on the growth of TiO2 nanotubes on the surface of specimens. TiO2 nanotubes have important potential applications, including the improvement of implant osseointegration process.

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CARVAJAL FALS, HIPOLITO; XAVIER BELEM, MARIA JULIA; SANCHEZ ROCA, ANGEL; FANTON, LEONARDO; CAMELLO LIMA, CARLOS ROBERTO. Phase transformation of Nb2O5 during the formation of flame sprayed coatings and its influence on the adhesion strength, abrasive wear and slurry erosive wear. WEAR, v. 426, n. A, p. 277-284, APR 30 2019. (17/25363-0, 17/16715-0)

DE MELLO, MARIANA G.; SALVADOR, CAMILO A. F.; FANTON, LEONARDO; CARAM, RUBENS. High strength biomedical Ti-13Mo-6Sn alloy: Processing routes, microstructural evolution and mechanical behavior. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v. 764, SEP 9 2019. (17/16715-0, 16/24693-3)

CARVAJAL FALS, HIPOLITO; XAVIER BELEM, MARIA JULIA; SANCHEZ ROCA, ANGEL; FANTON, LEONARDO; CAMELLO LIMA, CARLOS ROBERTO. Phase transformation of Nb2O5 during the formation of flame sprayed coatings and its influence on the adhesion strength, abrasive wear and slurry erosive wear. WEAR, v. 426, p. 8-pg., 2019-04-30. (17/25363-0, 17/16715-0)

FANTONT, LEONARDO; CREMASCO, ALESSANDRA; MELLO, MARIANA G.; CARAM, RUBENS. Anodization growth of TiO2 nanotubes on Ti-35Nb-7Zr-5Ta alloy: effects of anodization time, strain hardening, and crystallographic texture. Journal of Materials Science, v. 54, n. 21, p. 13724-13739, NOV 2019. (17/16715-0)