ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In order to investigate the effect of sintering temperature on the microstructure and densificationprocess of Y-SiAlON ceramics, by hot pressing at 1750°, 1800°, 1850° and 1900°C for 1 h, respectively,Y-α-SiAlON (m=1.2, n=1.2 according to formula Mm/3Si12-(m+n)Alm+nOnN16-n) was fabricated fromα-Si3N4, AlN, Al2O3 and Y2O3 starting powers. The results showed that α-SiAlON phase is formed in allsintered specimens, and during Y-SiAlON sintering, all the samples begin to quickly shrink at 1550°C,and the shrinkage is finished at 1750°C, which indicate that 1550 ~ 1750 °C is very important for thedensification process of Y-α-SiAlON ceramics, and 1750 °C is necessary for the Y-SiAlON densification.Higher sintering temperature contributes to α-SiAlON grain development and the SiAlON ceramicsdensification
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.905.pdf
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