The production of β-SiAlON ceramics with low amounts of additive, at low sintering temperature

Optimization of the optical properties of α-SiAlON through a decrease in starting powder size

“…In our previous study, we showed that the milling process did not alter the amount of oxygen in the compositions [24]. Therefore, the oxidation amount of the starting powders remained constant during the milling process.…”

“…The results show that during the milling process, the weight loss of the balls was approximately 0.0036 wt.%. Therefore, the wear of the balls may be ignored, as indicated in our previous study [24].…”

“…In our previous studies, it has been shown that reducing the particle size of raw materials could effectively lower the sintering temperature in the fabrication of SiAlON ceramics by gas http://dx.doi.org/10.1016/j.jeurceramsoc.2015.05.004 0955-2219/© 2015 Elsevier Ltd. All rights reserved. pressure sintering [22][23][24]. Krell [25] demonstrates that it is possible to produce almost fully transparent spinel armor with highly enhanced mechanical properties, such as hardness and ballistic strength, by decreasing the grain size of the final product.…”

“…Using ultrafine starting powders helps not only to control final grain size, but also to tailor the final microstructure and related mechanical, optical properties of polycrystalline ceramics [26]. It is well known that nano-sized starting powders improve the densification behavior of SiAlON ceramics at lower sintering temperatures, with lower additive content [22][23][24]. On the other hand, the effects of the particle size of starting powders on the optical properties of SiAlON ceramics have not yet been published.…”

Effect of α-Al2O3 on in situ synthesis low density O′-sialon multiphase ceramics

“…Previous studies have focused mainly on acquiring perfect mechanical properties, dielectric performance and thermal conductivity of Si 3 N 4 , ␤-sialon or their multiphase [8][9][10][11][12][13]. As for the research of O -sialon, there were more involved with its multiphase fabricated with other additives, take TiO 2 /(O + ␤ )-sialon, O -sialon/SiC for example [14,15].…”