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Received 13 December 2010; accepted 16 May 2011 Abstract: Adsorption and desorption behavior of Yb (Ⅲ) by SQD-85 resin was investigated by various chemical methods and IR spectrometry. The adsorption capacity of SQD-85 resin for Yb (Ⅲ) was studied as a function of solution pH, initial concentration of Yb(Ⅲ), temperature and contact time. The optimal pH for the adsorption was 5.50 in the HAc-NaAc......
Effect of Yb addition on precipitation and microstructure of Al-Cu-Mg-Ag alloys XIAO Dai-hong(肖代红)1, 2, HUANG Bai-yun(黄伯云)2 1. State Key Laboratory of Powder Metallurgy, Central South University... prepared by ingot metallurgy and thermomechanical treatment. The effect of Yb addition on the precipitation and microstructure of the alloys was investigated using mechanical properties testing......
; 文章编号:1672-7207(2013)12-4806-05 Influence of Yb addition on intergranular corrosionresistance of aluminum alloy 2519A ZHEN Yulin, JI Bo, YE Lingying, ZHANG Xingming (School..., and the influence of Yb addition on corrosion resistance of aluminum alloy 2519A was investigated by polarizing curve test, intergranular corrosion study, optical microscopy (OM) and transmission electron......
DOI:10.19476/j.ysxb.1004.0609.2019.07.02 微量镱和过渡元素对Al-Zn-Mg-Cu超强合金晶界特征和性能的影响 方华婵,刘 滩,朱佳敏,肖 鹏 (中南大学 粉末冶金国家重点实验室,长沙 410083) 摘 要:通过电子背散射衍射实验对复合添加稀土元素Yb和过渡族元素Zr或Cr的Al-Zn-Mg-Cu超高强合金的晶粒尺寸... and localized corrosion (Intergranular corrosion and exfoliation corrosion) of Al-Zn-Mg-Cu alloy was investigated. The results show that, comparing with Yb and Cr addition, the recrystallization of Al matrix......
AlCuYb金属间化合物,并沿晶界分布.复合添加Cr和Yb元素,与单独添加Yb元素的合金相比,Cr元素的加入改变了稀土元素的分布状态,合金在结晶过程中沿晶界形成的富稀土相明显减少,使更多的Yb元素固溶到基体中,从而更有效地细化合金的时效强化相,提高合金的力学性能,使合金室温抗拉强度由490.5MPa提高至508.9MPa. 关键词:2519A铝合金；铬；镱；显微组织；力学性能 中图分类号:TG146... microcopy and transmission electron microscopy. The results show that aging precipitates can be refined with appropriate addition of Yb, which increases the mechanical properties of the alloy. The AlCuYb......
J. Cent. South Univ. (2020) 27: 1654-1665 DOI: https://doi.org/10.1007/s11771-020-4397-8 Microstructure and corrosion behavior of as-cast ADC12 alloy with rare earth Yb addition and hot extrusion...: The effects of rare earth ytterbium (Yb) addition and hot extrusion on the microstructure and corrosion behavior of as-cast ADC12 were studied by optical microscopy (OM), scanning electron microscopy......
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取剂,先进行Tm/Lu粗分离,再进行Tm/Yb和Yb/Lu细分离的优化工艺,降低了酸,碱消耗,可节省酸,碱40%以上.邓佐国等[4]采用P507-HCl体系进行Tm/Yb/Lu三出口萃取粗分离和P507萃淋树脂萃取色层分离提纯相衔接的方法,成功地实现了铥-镱-镥富集物的全分离,分别获得纯度大于99.95%的Tm2O3,Yb2O3和Lu2O3产品.其二是利用火法冶金技术由铥-镱-镥富集物直接制备金属镱或者金属镱和铥.如吴炳乾等[1]分析了镧热还原铥-镱-镥富集物制备金属镱时稀土杂质和非稀土杂质的行为,制得了金属直收率为85%~90%,纯度为98%的金属镱.邓汝富等[5-6]分析了镧热还原氧化镱富集物制备金属镱的热力学可行性,并制得了直收率为87%,纯度(Yb/RE)为99%金属镱. 采用廉价的铥-镱-镥富集物制备金属镱不仅可以大幅度降低金属镱的生产成本,而且由于富集物中大部分镱已被提取出来......
)04-0712-06 Effect of addition of Yb on strength and toughness of Al-Zn-Mg-Cu-Zr high-strength aluminum alloy CHEN Kang-hua, FANG Hua-chan, QI Xiong-wei, ZHANG Zhuo (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: Effect of addition of Yb on the microstructure and mechanical properties of Al-Zn-Mg-Cu-Zr high-strength aluminum alloy......
流动注射-抑制化学发光法测定镱(Ⅲ)冯琳重庆师范大学化学学院摘 要:在碱性介质中,Yb(Ⅲ)对Luminol-KMnO4体系化学发光强度具有抑制作用,据此建立了一种测定Yb(Ⅲ)的化学发光新方法.在优化的实验条件下,化学发光强度与Yb(Ⅲ)的浓度在4.0×10-71.0×10-4mol/L范围内呈现出良好的线性关系.其检测限(3σ)为5.0×10-8mol/L,对8.0×10-5mol/L的Yb(Ⅲ)溶液进行测定,相对标准偏差为3.9%(n=11).本法已应用于合成样品中的镱的测定.关键词:流动注射;化学发光:鲁米诺;稀土镱;抑制;......
