Surface Evolution Of A Gradient Structured Ti In Hydrogen peroxide Solution

摘要

In this work, the interaction between hydrogen peroxide (H_2O_2) and a gradient structured Ti was investigated extensively. The gradient structured Ti (SMAT Ti) was produced by surface mechanical attrition treatment (SMAT), and then it was immersed in H_2O_2 solution for different time until 48 h at room temperature (25 °C). The structure and surface morphology evolution were examined by Raman spectra and scanning electron microscopy (SEM). The formation mechanism of nanoporous titania was discussed based on above results.