Study on the anisotropic growth of rod-like Yb alpha-SiAION crystals prepared by combustion synthesis

摘要

In this paper, single-phase Yb alpha -SiAlON powder with rod-like crystals was fabricated by combustion synthesis. The microstructural development of the rod-like alpha-SiAlON crystals was studied, and anisotropic grain growth was observed. Furthermore, the growth mechanism of the rod-like alpha-SiAlON crystals was investigated, and the experimental results indicated that during the anisotropic grain growth, the fast growth plane was the basal plane in the hexagonal crystal lattice.