Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Surface topography of NiTi alloy in initial state on a ground surface (a), polished surface (b), and with TiO2 surface layers produced at 290 °C on ground surface (c), at 290 °C on polished surface (d), at 190 °C on ground surface (e), and at 390 °C on ground surface (f), as visualized by optical profilometer.
