Sinterability of nanopowders of terbia solid solutions with scandia,yttria,and lutetia

查看全文 作　　者：Stanislav [1]S.BALABANOV;Dmitry [1]А.PERMIN;Elena [1]Ye.ROSTOKINA;Sergey [2]V.EGOROV;ANDrey [2]A.SOROKIN

机构地区：[1]G.G.Devyatykh Institute of Chemistry of High-Purity Substances RAS;[2]Federal Research Center, the Institute of Applied Physics RAS

出　　处：《Journal of Advanced Ceramics》索引2018年第7卷第4期,共8页

基　　金：supported by the Russian Foundation for Basic Research (Grant No.16-03-00595) 摘　　要：The synthesis of nanopowders of terbia compounds with scandia, yttria, and lutetia was carried out using a self-propagating high-temperature synthesis method involving a mixture of nitrates of metals and glycine as a precursor. The nanopowder phase transformations were investigated using X-ray diffraction analysis. It was found that lutetia has a negligible effect on the phase formation in terbia. On the other hand, yttrium and scandium ions significantly suppressed crystallization. The densification kinetics of nanopowders of the Tb_2O_3 compounds and the microstructure of ceramics after microwave sintering were studied using dilatometry and scanning electron microscopy. The introduction of scandia, yttria, or lutetia contributed to the intensification of the densification of the terbia ceramics when heated in a microwave field. Near full-density materials of terbia solid solutions with lutetia and yttria were obtained at about 1600–1640 ℃. The ceramics of scandia–terbia compounds contained the second phase, which causes light scattering. 关键词：terbia MICROWAVE SINTERING X-ray analysis CERAMICS

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Sinterability of nanopowders of terbia solid solutions with scandia,yttria,and lutetia

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