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.
EDS mapping results of uP-Mg-3Ca and P-Mg-3Ca preheating at 400 °C for 8 h. (a) uP-Mg-3Ca surface with element distribution of (b) Mg, (c) O and (d) Ca; (e) P-Mg-3Ca at 400 °C surface with element distribution of (f) Mg, (g) O and (h) Ca. It shows the preferential oxidation of the Ca-rich Mg2Ca phase.
