BioNano Interfaces and Engineering Applications: On-Demand Poster Session
Sponsored by: TMS Functional Materials Division, TMS Structural Materials Division, TMS: Biomaterials Committee
Program Organizers: Candan Tamerler, University of Kansas; Hendrik Heinz, University of Colorado Boulder; Kalpana Katti, North Dakota State University; Terry Lowe, Colorado School of Mines; Po-Yu Chen, National Tsing Hua University

Monday 8:00 AM
March 14, 2022
Room: Biomaterials
Location: On-Demand Poster Hall

Thermal Oxidation as a Tool to Biofunctionalize Novel Biomedical Ti-based Alloys: Diego Correa1; Carlos Grandini2; Luís Rocha2; Lívia Sottovia2; Nilson Cruz2; Elidiane Rangel2; 1IFSP - Campus Sorocaba; 2UNESP - Univ. Estadual Paulista
    In this study, the effect of temperature on the morphology, crystalline structure, composition, and some mechanical and corrosion properties of thermally oxidized Ti-15Zr-Mo alloys was evaluated. Thermal oxidation treatments were performed in air, at temperatures between 773 K and 1173 K, for 21.6 ks. Phase composition was affected by the temperature and the substrate’s chemical composition, presenting distinct phase proportions of TiO2 (anatase and rutile) and ZrO2 (tetragonal and monoclinic). Morphology was composed mainly of a smooth inner layer with some islands in the outer layer, with average thickness ranging from 1 µm to more than 100 µm. Roughness and wettability values changed according to the oxide layer growth. Vickers microhardness exhibited a sharp increase due to the ceramic coating. The results indicated that an adequate combination of surface properties for biomedical applications could be achieved with the handling of thermal oxidation treatment parameters. (Financial support: FAPESP, CNPq and CAPES).