The solubility of aluminium in rare earth nitrogen melilite phases
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Dopant-dependent diffusion behavior of SiAlON ceramics against Inconel 718 superalloy
2018, Ceramics InternationalCitation Excerpt :Therefore, the decrease in the zone thickness of the Er+3 system was attributed to the crystallinity of grain boundary phase as nitrogen-melilite (Fig. 3). Chee et al. [19] were suggested that nitrogen-melilite (containing 67 eq.% of nitrogen) is an attractive grain boundary phase for high temperature performance of SiAlON ceramics due to its high refractoriness. Crystallization of melilite phase at the grain boundaries of Er+3 and Y+3 doped SiAlON ceramics was also reported by Bandyopadhyay et al. [20] and Ijevskii et al. [21].
The effect of z value on intergranular phase crystallization of α<sup>ı</sup>/β<sup>ı</sup>-SiAlON-TiN composites
2017, Journal of the European Ceramic SocietyCitation Excerpt :Stability of alumina containing RE-woehlerite solid solution increased with decreasing RE ionic radius (e.g. Yb2O3). Woehlerite phase crystallized readily during cooling from the liquid phase, and hence, it had higher degree of crystallization than in the case of devitrification of glasses by means of post sintering heat treatments [25]. Woehlerite phase does not form low eutectic temperature with Si3N4 and so possesses much better refractoriness and stability up to 1350 °C.
Highly dense Si<inf>3</inf>N<inf>4</inf> crucibles used for Al casting: An investigation of the aluminum-ceramic interface at high temperatures
2007, Journal of Materials Processing TechnologyPhase and microstructural evolution during the heat treatment of Sm-Ca-α-sialon ceramics
2002, Journal of the European Ceramic SocietyChapter 5 <sup>27</sup> AI NMR
2002, Pergamon Materials SeriesChapter 4 <sup>29</sup> Si NMR
2002, Pergamon Materials Series