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- W2132863368 abstract "Fused quartz granules (d 50 =19 μm) were used as raw material, and Si 3 N 4 -Y 2 O 3 (1:1, in mass) was used as additive with dosages of 1%, 2% and 3% (in mass). Fused quartz ceramic materials were fabricated in reduction atmosphere at 1300 °C, 1350 °C and 1400 °C for 1 h. The effect of Si 3 N 4 -Y 2 O 3 on crystallization and sintering of the fused quartz ceramic materials were researched by measurements of apparent porosity, bending strength and thermal expansion rate (RT~1200 °C), and by the analyses of XRD and SEM. The results showed that the samples sintered at each temperature with 3% Si 3 N 4 -Y 2 O 3 had the lowest apparent porosity, the highest bending strength and more compact microstructure. This indicated that 3% Si 3 N 4 -Y 2 O 3 was conducive to sintering of fused quartz ceramic materials. The results of XRD and thermal expansion rate showed that addition of 3% Si 3 N 4 -Y 2 O 3 compound had obvious effect on inhibiting crystallization of the samples sintered at various temperatures. It can be deduced that the Si3N4-Y2O3 compound plays the best role in inhibiting crystallization and facilitating sintering of fused quartz ceramic materials." @default.
- W2132863368 created "2016-06-24" @default.
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- W2132863368 date "2011-09-01" @default.
- W2132863368 modified "2023-09-26" @default.
- W2132863368 title "Effect of Si<sub>3</sub>N<sub>4</sub>-Y<sub>2</sub>O<sub>3</sub> Compound Additive on Crystallization and Sintering of Fused Quartz Ceramic Materials" @default.
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