Gizowska Magdalena, Piątek Milena, Perkowski Krzysztof, Konopka Gustaw, Witosławska Irena
Department of Ceramics and Composites, Division of Ceramic and Concrete in Warsaw, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, 9 Postępu Street, 02-676 Warsaw, Poland.
Research Laboratory, Division of Ceramic and Concrete in Warsaw, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, 4 Kupiecka Street, 03-042 Warsaw, Poland.
Nanomaterials (Basel). 2020 Apr 27;10(5):831. doi: 10.3390/nano10050831.
In the work the research on properties of an yttria nanopowder obtained by solution combustion synthesis (SCS) in terms of its application in ceramic technology is presented. In order to characterize the SCS reaction the decomposition of yttrium nitrate, glycine and their solution was investigated using differential thermal analysis coupled with FT-IR spectrometry of the gases emitted during the measurements. The product obtained in the SCS process was characterized in terms of its microstructure, particle size distribution and BET specific surface. Although the obtained powders showed nanoscaled structures, only after calcination at a temperature of 1100 °C nanosized particles were revealed. The calcined powder occurred in an agglomerated state (cumulants mean Z = 1.3 µm). After milling particle size was successfully decreased to Z = 0.28 µm. The deagglomerated powder was isostatically densified and tested for sintering ability. The obtained nanopowder showed very high sintering activity as the shrinkage onset was detected already at a temperature of about 1150 °C.
本文介绍了通过溶液燃烧合成（SCS）法制备的氧化钇纳米粉末在陶瓷技术中的应用性能研究。为了表征SCS反应，采用差示热分析结合测量过程中释放气体的傅里叶变换红外光谱法，研究了硝酸钇、甘氨酸及其溶液的分解情况。对SCS过程中获得的产物进行了微观结构、粒度分布和BET比表面积的表征。尽管所获得的粉末呈现出纳米级结构，但只有在1100℃煅烧后才发现纳米尺寸的颗粒。煅烧后的粉末呈团聚状态（累积平均粒径Z = 1.3 µm）。研磨后，粒径成功减小至Z = 0.28 µm。对解团聚后的粉末进行等静压致密化处理，并测试其烧结能力。所获得的纳米粉末表现出非常高的烧结活性，因为在约1150℃的温度下就已检测到收缩开始。
