Figure 4.
(A) Photographs of the aluminum substrate and the AZ coatings after the thermal treatment. Scale bar: 1 cm. (B, C) Top-view (scale bar: 50 μm) and cross-section (scale bar: 20 μm) SEM images, respectively, of the AZ coatings.
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.