Investigation of Production of Fine-grained SiAlON Ceramics from Nanopowders

Abstract

Different sialons’ compositions were used to find the effect of material starting components on sintering and properties of sialon materials. The nanopowders (Si₃N₄, AlN, Al₂O₃, Y₂O₃ and Si₃N₄-27 wt.% AlN nanocomposite) were produced by the plasmachemical synthesis. The composite materials were sintered by the method of pressure-less sintering. Sintering temperature decreased significantly, if Si₃N₄-AlN nanocomposite was used as one of the components. The increased amount of a- sialon phase and higher hardness are characteristic for materials obtained from separate Si₃N₄, AlN, Al₂O₃, Y₂O₃ nanocomponents.<p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.18.3.2439">http://dx.doi.org/10.5755/j01.ms.18.3.2439</a></p

The Effect of Raw Components on the Densification and Properties of Nanostructured Sialon Materials / Izejas materiālu ietekme uz nanostrukturētu sialona materiālu saķepšanu un īpašībām

“…This investigation is based on previous research [7]- [8] and is a continuation of it. The aim of this paper was to show the effect of different nanosized starting components on densification, structure, phase composition and properties of sialon materials for two compositions.…”