湿固相机械化学法制备超细氧化钇的研究  

Preparation of Ultrafine Yttria by Wet-Solid-Phase Mechanochemical Reaction

作　　者：高海炼[1] 陈伟凡[1] 李凤生[1] 刘洋[1] 于吉义[1] 邓国栋[1] 

机构地区：[1]南京理工大学国家特种超细粉体工程技术研究中心,江苏南京210094

出　　处：《稀有金属》2006年第6期795-799,共5页Chinese Journal of Rare Metals

基　　金：国家自然科学基金项目(20161002);总装预研基金资助项目(41328030507)

摘　　要：以工业上常见的水合草酸钇和氨水为原料,采用湿固相机械化学法制备了D50<0.5μm,D90<1μm的窄分布超细氧化钇,研究了在球磨和煅烧过程中对氧化钇粒度的影响因素,通过粉末X射线衍射(XRD)、同步热分析(TG-DSC)和傅立叶变换红外光谱(FTIR)考察了球磨过程中的机械化学反应与物相转变,以及前驱体的热分解过程。Ultrafine yttria with narrow particle size distribution of D50〈 0.5μm and D90〈μm was prepared via wet-solid-phase mechanochemical reaction between hydrate yttrium oxalate and ammonia in planetary mill. The factors influencing the particles size of yttria in the processes of milling and calcinating were investigated. The mechanochemical reaction and phase evolution during milling and the thermal decomposition of the precursor were studied by means of powder X-ray diffraction（XRD）, simultaneous thermogravimetric analysis and differential scanning calorimetry （TG-DSC）, Fourier transform infrared spectroscopy （FTIR） and scanning electron microscopy（SEM）.

关 键 词：超细氧化钇 行星磨 湿固相 机械化学反应 水合草酸钇 氨水 

分 类 号：TF123.72[冶金工程—粉末冶金]