材料期刊网

Preparation of Rare Earth Hydroxide and Oxide Nanoparticles by Precipitation Method

Xiangting DONG , Guangyan HONG

材料科学技术（英文）

A series of rare earth hydroxide and oxide nanoparticles have been prepared by precipitation method with alcohol as the dispersive and protective reagent. Transmission electron microscope (TEM) images indicate that the particles are spherical in shape and smaller than 100 nm in size. The crystallite...

关键词: Rare earth , null , null , null , null

Effect of Stoichiometry on Properties of Rare-Earth-Based Hydrogen Storage Alloy for Nickel-Metal Hydride Secondary Battery

Quan'an LI , Yungui CHEN , Mingjing TU

材料科学技术（英文）

Effect of stoichiometry on microstructures, electrochemical properties and PCT characteristics of the alloys Ml(Ni0.71Co0.15-Al0.06Mn0.08)x (Ml=Lanthanum-rich Michmetal, x=4.6-5.2) have been investigated. The lattice constants a, c and cell volumes of non-stoichiometric alloys are bigger than those ...

关键词: Hydrogen storage alloy , null , null , null , null

La掺杂TiO2负载Pt催化剂制备及其室温氧化低浓度甲醛

彭洪根 , 应家伟 , 张景岩 , 张先华 , 彭程 , 饶成 , 刘文明 , 张宁 , 王翔

催化学报 doi:10.1016/S1872-2067(16)62532-9

甲醛是室内装修污染的重要组分,已严重危害到人们身体健康,在室温条件下消除甲醛引起了人们的广泛兴趣.目前室温清除甲醛主要有物理吸附法、光催化法、等离子体技术及催化氧化技术.物理吸附法主要采用活性炭等作为吸附剂,其初期吸附效果较好,但当吸附饱和之后会重新释放甲醛造成二次污染;光催化法和等离子体技术需要特...

关键词: 低浓度甲醛 , 室温氧化 , 稀土 , 镧掺杂 , 铂 , 二氧化钛 , 整体催化剂

Production, Properties and Microstructures of Mg-RE-Zn-Zr (RE=MM, Nd) Alloy

Kun YU , Wenxian LI , Songrui LI

材料科学技术（英文）

The Mg-MM and Mg-Nd master alloys were prepared through the ingot metallurgy method under the protection of a special flux. The thermodynamic behaviors of different rare earth elements in the molten Mg alloys were investigated. Two experimental alloys,Mg-3.0 wt pct MM-0.7 wt pct Zn-0.7 wt pct Zr and...

关键词: Mg-RE-Zn-Zr alloy , null , null

Leaching and mass transfer characteristics of elements from ion-adsorption type rare earth ore

Yan-Fei Xiao , Zong-Yu Feng , Gu-Hua Hu , Li Huang , Xiao-Wei Huang , Ying-Ying Chen , Ming-Lai Li

稀有金属 doi:10.1007/s12598-015-0481-x

关键词:

Improvement and Micro-mechanism of a Low Expansion Superalloy

稀有金属（英文版）

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稀土铈和镧对碳钢在氯化钠溶液中缓蚀机理的研究

汪兵 , 刘清友 , 王向东 , 贾书君 , 董瀚

中国腐蚀与防护学报

采用盐水滴腐蚀试验、腐蚀产物SEM及XPS分析、极化曲线测试分别研究了Ce3+和La3+对碳钢在氯化钠溶液中的缓蚀机理，并利用热力学数据绘制了Ce-H2O及La-H2O二元电位－pH相图。结果表明Ce3+和La3+能够在pH值较高的阴极区沉淀，阻碍O及电子在碳钢表面和溶液之间的转移和传递，通过抑制阴...

关键词: 稀土 , Corrosion inhibitor , cathodal deposit , potential-pH diagram

31P MAS NMR固体核磁共振研究稀土改性Y分子筛的酸性

于善青 , 田辉平

催化学报 doi:10.1016/S1872-2067(14)60149-2

以三甲基磷氧(TMPO)和三丁基磷氧(TBPO)为探针分子,用31P魔角旋转核磁共振(31P MAS NMR)法对稀土改性Y型分子筛的酸性进行了定性和定量分析。结果表明,以TMPO为探针分子的31P MAS NMR谱分别在δ=78,70,65,62,58,55和53处存在与酸中心相关的吸收峰,其中δ...

关键词: Y型分子筛 , 稀土 , 酸性 , 31P核磁共振

A Comparison of Corrosion Behavior in Saline Environment: Rare Earth Metals (Y, Nd, Gd, Dy) for Alloying of Biodegradable Magnesium Alloys

材料科学技术（英文）

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Preparation of Rare Earth Hydroxide and Oxide Nanoparticles by Precipitation Method

材料科学技术（英文）

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