Figure 4.
SEM images of the top and bottom parts of porous α-SiAlON samples fired under different conditions: 1800 °C-2 h (A1, A2), 1900 °C-1 h (B1, B2) and 1900 °C-2 h (C1, C2).
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.