Effect of nitrogen content on optical properties of transparent γ-AlON polycrystalline ceramics

A series of transparent ceramics with the composition of Al(8+x)/3O4−xNx (x = 0.299–0.575) were prepared without any sintering additives by presintering combined with hot isostatic pressing (HIP). The composition of the samples was accurately determined to investigate the effect of nitrogen content on optical properties in γ-AlON. The samples with x = 0.299–0.510 possessed excellent in-line transmittance (>80 %) from the visible light to...