Peculiarities of the free sintering of δ- and α-Al<sub>2</sub>O<sub>3</sub> nanopowders after magnetic pulse compaction
By X-ray diffraction, X-ray phase analysis, SEM, thermal analysis, and dilatometry methods, the processes of a free sintering of alumina nanopowders compacted by a conventional or uniaxial magnetic pulse techniques have been investigated. It is ascertained the controlling mechanisms of the sintering processes are different for nanopowders compacted in a variety of ways.