| Progress and Challenges in the Synthesis of
AlON Ceramics by Spark Plasma Sintering |
Xibao Li*, Juntong Huang and Junming Luo
Pages : 14-20
DOI : 10.1080/0371750X.2017.1257956 |
| Abstract |
| -aluminium oxynitride (AlON) has an excellent thermal and chemical stability, which
makes AlON an attractive candidate for a wide range of applications. Production of
transparent AlON is extremely challenging because residual porosity must be reduced
to an absolute minimum. This can be achieved by spark plasma sintering (SPS) and
introducing sintering additives. This article provides a review of research activities
that concentrate on the development of spark plasma reaction sintering of AlON
ceramics with and without sintering additives. Influence of the most important
operating parameters (atmosphere, temperature, processing time, heating rate, etc)
on product characteristics and process dynamics is reviewed for AlON ceramics.
Comparison of SPS over conventional methods including pressureless sintering,
hot pressing sintering and others is demonstrated. Recent advances and challenges
in the synthesis of AlON ceramics by SPS are also discussed. |
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