摘要
引言超微粉未已被视为九十年代的新材料,它的许多奇特的性质和令人惊异的应用不仅引起人们的重视,并开展了许多研究。但目前对希土金属及其化合物的超微粉未的研究则报道甚少。尽管如此,希土超微粉未已经在磁性材料、超导材料、传感器、超高温耐热合金等方面获得应用,并取得了明显的效果。超微粉末的合成方法其多,但均不成熟、寻求合成希土超微粉末的方法则是一个重要的课题。我们在研究醇盐法制备氢氧化钕、氧化钕超微粉末的同时,采用热分解法制备了一系列希土氧化物超微粉末,观察了它们粒径变化的规律,得到一些新的结果。
A series of rare-earth oxides ultrafine powder were prepared by thermolysis. The influences of synthetic condition for product were investigated. It was observed that the partical diameter has to do with radius of Ln3+ ion, the partical diameter or ultrafine powder of heavy rare-earth is longer than one of light rare-earth, and that X-ray diffraction peak change wide as formed ultrafine powder.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1991年第2期241-243,共3页
Chinese Journal of Inorganic Chemistry
关键词
稀土氧化物
超微粉末
热分解法
ultrafine powder, rare-earth oxide, thermolysis
