| 초록 |
The use of aluminum nitride (AlN) has recently begun to be explored for advanced functional applications. For some particular applications, it is more advantageous to use porous-structured AlN, simply because it can provide a greater surface area and higher permeability. However, porous or bulk AlN is very difficult to achieve due mainly to its high melting point (2200 °C). This study proposes a new novel processing method to synthesize porous AlN through a complete transformation from porous aluminum (Al) using a remarkably low nitriding/sintering temperature (620 °C) as opposed to only the surface nitride AlN-Al core composite systems reportedly at or above 1,000 °C in the literature. A uniform microporous bead structure of porous AlN with a mean pore size of 74.0 ± 27.7 µm was obtained that also contained nanoparticles ranging from 80 to 230 nm that covered the surface. |
