Hardness and elastic modulus of TiO2 anodic films measured by instrumented indentation |
| |
Authors: | Soares Paulo Mikowski Alexandre Lepienski Carlos M Santos Emanuel Soares Glória A Swinka Filho Vitoldo Kuromoto Neide K |
| |
Institution: | Health Technology Post-Graduate Program, Pontifícia Universidade Católica do Paraná, 80215-901 Curitiba (PR), Brazil. pcsoaresjr@yahoo.com |
| |
Abstract: | The aim of this work was to investigate the mechanical properties of the titanium anodic films (TiO2) produced by anodic oxidation under galvanostatic conditions, using a 1.4M phosphoric acid electrolyte, with different current densities (J) on commercially pure titanium (cp-Ti). The morphology of the oxide films were observed by scanning electron microscopy (SEM), whereas the composition of the film was determined by Raman spectroscopy. Porosity, average roughness (Ra) and thickness of the TiO2 films increased with the applied J. Hardness and elastic modulus were measured by instrumented indentation technique, and the influence of the substrate was corrected using analytical models. The anodic films presented higher hardness and lower elastic modulus values compared with the cp-Ti. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|