燃烧法合成钇稳定氧化锆的燃料种类的影响_外文翻译.zip
燃烧法合成钇稳定氧化锆的燃料种类的影响_外文翻译,论文共10页 英翻中effect of the fuel type on the synthesis of yttria stabilizedzirconia by combustion methodnano-sized 8 mol% yttria stabilized zirconia (ysz) powders w...
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论文共10页 英翻中
Effect of the fuel type on the synthesis of yttria stabilizedzirconia by combustion method
Nano-sized 8 mol% yttria stabilized zirconia (YSZ) powders were synthesized by the combustion method using two different fuels (urea andglycine). The effect of the nature and amount of the fuel was investigated on the phase structure, particle size and microstructure of the resultedYSZ ceramics. The results showed that YSZ powders synthesized using urea presented larger crystallite size and lower specific surface area thanthose derived from glycine route. This behavior is closely related to the combustion flame temperature. The elevated temperature duringcombustion synthesis with urea favored the formation of large aggregates, instead of loose and porous particles as observed for glycine route. As aconsequence, the best result in terms of densification was obtained for the pellets prepared by sintering of powders synthesized through glycineroute.
本文采用燃烧法以两种不同的有机燃料（尿素和甘氨酸）成功合成了8 mol% 氧化钇稳定氧化锆纳米粉体(YSZ)。通过研究燃料性质和数量对相结构、颗粒大小及YSZ烧结体的微结构影响。结果表明，用尿素合成的YSZ粉体比用甘氨酸合成的粉体晶粒更大，比表面积更小。该现象的产生与燃烧的火焰温度有密切关系，当用尿素作为燃料时，其燃烧火焰温度很高，合成的粉体团聚较严重；而甘氨酸作为燃料合成的粉体比较疏松且比表面积较大。因此，将甘氨酸制备的粉体烧结成球团是陶瓷致密化最佳的方法。
Effect of the fuel type on the synthesis of yttria stabilizedzirconia by combustion method
Nano-sized 8 mol% yttria stabilized zirconia (YSZ) powders were synthesized by the combustion method using two different fuels (urea andglycine). The effect of the nature and amount of the fuel was investigated on the phase structure, particle size and microstructure of the resultedYSZ ceramics. The results showed that YSZ powders synthesized using urea presented larger crystallite size and lower specific surface area thanthose derived from glycine route. This behavior is closely related to the combustion flame temperature. The elevated temperature duringcombustion synthesis with urea favored the formation of large aggregates, instead of loose and porous particles as observed for glycine route. As aconsequence, the best result in terms of densification was obtained for the pellets prepared by sintering of powders synthesized through glycineroute.
本文采用燃烧法以两种不同的有机燃料（尿素和甘氨酸）成功合成了8 mol% 氧化钇稳定氧化锆纳米粉体(YSZ)。通过研究燃料性质和数量对相结构、颗粒大小及YSZ烧结体的微结构影响。结果表明，用尿素合成的YSZ粉体比用甘氨酸合成的粉体晶粒更大，比表面积更小。该现象的产生与燃烧的火焰温度有密切关系，当用尿素作为燃料时，其燃烧火焰温度很高，合成的粉体团聚较严重；而甘氨酸作为燃料合成的粉体比较疏松且比表面积较大。因此，将甘氨酸制备的粉体烧结成球团是陶瓷致密化最佳的方法。
