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1Electrochemical preparation and characterization of brain-like nanostructures of Y_2O_3显示文摘Nanostructured Y2O3 was successfully prepared via a two-step and template-free method.Firstly,yttrium hydroxide precursor was galvanostatically grown on the steel substrate from chloride bath by direct and pulse current deposition modes.Direct current deposition was carried out at the constant current density of 0.1 A/dm2 for 600 s.The pulse current was also performed at a typical on-time and off-time(ton=1 s and toff=1 s)with an average current density of 0.05 A/dm2(Ia=0.05 A/dm2)for 600 s.The obtained hydroxide films were then scraped from the substrates and thermally converted into final oxide product via heat-treatment.Thermal behaviors and phase transformations during the heat treatment of the hydroxide powder samples were investigated by differential scanning calorimetry(DSC)and thermogravimetric analysis(TGA).The final oxide products were characterized by means of X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR)and scanning electron microscopy(SEM).The results showed that the well-crystallized Y2O3 with brain-and sphere-like morphology were achievable via pulse and direct deposition modes,respectively.It was concluded that pulse current cathodic electrodeposition offered a facile route for preparation of nanostructured Y2O3.Mustafa Aghazadeh Mojtaba Hosseinifard Mohammad Hassan Peyrovi Behrouz Sabour 2013Journal of Rare Earths2013,31,3:5
2钇铝石榴石纤维的应用与制备显示文摘钇铝石榴石纤维具有抗氧化、耐高温、抗高温蠕变等特点,可作为高温耐火材料,也可作为高温复合材料的增强材料。本文对钇铝石榴石的晶体结构、应用和制备方法进行了介绍,并展望了钇铝石榴石纤维的发展趋势。谭宏斌 袁新强 付蕾 2011中国陶瓷2011,47,4:4
3添加ZrO_2对YAG纤维物相和形貌的影响显示文摘以氯化铝、金属铝粉、氧化钇、氧氯化锆、醋酸为原料,采用溶胶-凝胶法制备了钇铝石榴石(YAG)纤维,并研究添加ZrO2对YAG纤维的物相和形貌的影响。结果表明,添加ZrO2的YAG纤维物相仍为钇铝石榴石相,纤维表面光滑且直径均匀;ZrO2可作为YAG纤维的增韧相。谭宏斌 2011稀有金属与硬质合金2011,39,4:0
4球形钇铝石榴石粉体制备工艺发展现状显示文摘综述了球形钇铝石榴石粉体的制备方法和研究进展,主要包括喷雾热解法、沉淀法、水热法、冷冻干燥、微乳液方法等。对各种方法的优缺点进行了比较,最后对球形钇铝石榴石粉体的研究前景和研究方向进行了展望。徐晓娟 孙旭东 李金生 李晓东 李继光 刘绍宏 2014中国陶瓷2014,50,5:0
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