CAJ | 학술논문

为丰富稀土产品,拓展稀土应用领域,以现有稀土产品之一的碳酸钆为原料,通过水热结晶,直接合成水合碳酸钆薄壁纳米管,用粉末X射线衍射、热分析、透射电镜技术表征了样品的结构、形貌和热稳定性.水合碳酸钆纳米管长为数百纳米至1.5μm,管径为50～200 m,在680℃以上分解后可得体心立方晶系的氧化钆纳米管,尺寸和形貌未发生显著变化.该法条件温和,流程短,可作为现有湿法冶金工艺的一个部分,直接生产碳酸钆和氧化钆纳米管,而且克服了立方相氧化物不易可控生长的缺点.
위봉부희토산품,탁전희토응용영역,이현유희토산품지일적탄산구위원료,통과수열결정,직접합성수합탄산구박벽납미관,용분말X사선연사、열분석、투사전경기술표정료양품적결구、형모화열은정성.수합탄산구납미관장위수백납미지1.5μm,관경위50～200 m,재680℃이상분해후가득체심립방정계적양화구납미관,척촌화형모미발생현저변화.해법조건온화,류정단,가작위현유습법야금공예적일개부분,직접생산탄산구화양화구납미관,이차극복료립방상양화물불역가공생장적결점.
Nanotubes of gadolinium carbonate hydrate were prepared through a simple hydrothermal crystallization method with commercial carbonate as precursor for the purpose of enriching rare earth products and enhancement of their applications. The nanotubes are hundreds nanometers to one and a half micrometers long and 50 ～ 200 nm wide with thin walls. The sample can easily bedecomposed into body - centered cubic oxide crystalline nanotubes with almost no changes of both the size and the morphology at a lower temperature of about 680 ℃.