Figure 4.
Appearance of samples with salt spray test time. (a) 0 h, (b) 24 h, (c) 48 h, (d) 72 h, and (e) 96 h. Samples position are as shown in the illustration.
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.