Rareearthelement相关论文
LnMnO3+σ (Ln =La,Pr,Nd,Sm,Eu,Gd or Dy) perovskites synthesized by sol-gel method were employed for gaseous elemental me......
The influence of alloying elements and heat treatment on the microstructure and mechanical behaviors of extruded Mg Gd N......
The effect of reactive element yttrium on purification and carbide precipitation of superalloy K4169 has been studied th......
The Zn-23%Al-0.3%Si coating is a novel alloy coating which is developed by Canada Comico company.The Zn-23Al-0.3Si-XMg c......
DAILY INTAKE AND CONCENTRATIONS OF 15 KINDS OF RARE EARTH ELEMENTS IN FOODS FOR ADULT MEN IN FOUR AR
Objective: To obtain 15 rare earth elemental concentrations and daily intakes in foods for adult men in four areas in Ch......
Femtogram Detection of Rare Earth Element Residues Using Laser Desorption and Laser Postionization M
Recently,rare earth elements(REEs)have garnered great attention in marine geochemistry,climate change,and anthropogenic ......
基于第一性原理计算了稀土元素La、Y分别掺杂和共掺杂Ca2Si的几何结构、能带结构、电子态密度及光学性质。计算结果表明, La单掺杂......
The effects of rare earth elements (La, Sm) on the high-temperature (250 ℃) microstructure and mechanical properties of......
Effect of Lattice REEs on the Electronic Structure and Reactivity of FluorapatiteFirst-Principles Ca
The Ca element in fluorapatite(Ca10F2(PO4)6)is often replaced by rare earth elements(REEs),such as lanthanum(La)and ......
Major,trace and rare earth elements were measured in 27 samples of the Middle to Late Permian limestones from the Tieqia......
The study of magnetic properities of rare earth element Dy3+ doped strontium hexaferrite SrDyxFe12-x
Strontium hexaferrite(SrFe12O19)is of superb qualities such as high Curie temperature(Tc),high saturation magnetizat......
目的 建立水源水中16种稀土元素的电感耦合等离子体质谱(ICP-MS)检测方法.方法 观察酸度对响应值的影响,用混合调谐液优化仪器工作......
用放射性核素＾１４１Ｃｅ作示踪剂，通过对稀土Ｃｅ＾３＋在大鼠主动脉上的跨膜内流的研究表明，去甲肾上腺素（１．２μｍｏｌ／Ｌ）和ＫＣｌ（１００ｍｏｌ／Ｌ）都要引起Ｃｅ＾３＋跨膜内流量的增加，并以ＫＣｌ（１００ｍｏｌ／Ｌ）引起的增加量......
本文综述了近十几年来稀土在渗硼及硼的复合渗中的作用以及稀土对渗层组织性能的研究概况，并对其作用机理作了初步探讨。......
在耐磨、耐热堆焊焊条中，通过加入不同量的稀土元素钇，较系统的研究稀土元素钇对堆焊层组织和性能的影响。......
在渗剂中不加稀土和加入不同量稀土的条件下，对３Ｃｒ２Ｗ８Ｖ钢进行了硫碳氮共渗试验。用金相法和显微硬度法测定了硫碳氮共渗动力学曲线。利用二......
系统研究了稀土、钛复合变质剂对锰硅工体铸钢晶粒尺寸的影响。表明，经稀土、钛复合变质处理后，贝氏体铸钢中形成大量的高熔点化全物......
用透射电镜研究了稀土催渗离子渗氮层的微观结构。结果表明，稀土催渗可使γ＇相晶粒细化，晶界面缺陷增加；稀土的加入，增加了离子轰击效应......
研究了送粉激光熔覆添加Ｃｅ的可能性和对组织、性能的影响。结果表明：Ｃｅ可以劝化组织，提高熔覆层的显微硬度和耐磨性。......
从改变碳化物形貌的角度研究了稀土变质处理与热处理之间的协同作用。结果表明，综合运用稀土变质处理和热处理工艺是改善低铬半钢共......
通过放射示踪技术，研究了新月藻（Ｃｌｏｓｔｅｒｉｕｍｌｕｎｕｌａ）对稀土元素镧（Ｌａ）的吸收富集状况．结果表明，新月藻对稀土元素镧有很强的吸收富集能力，其富集量随处理时间的......
利用冲击疲劳试验机，研究了稀土元素对高碳铬钢冲击疲劳性能的影响。结果表明：稀土与热处理复合作用，可加速钢状共晶碳化物向孤立的块......
用三烷氧基钕与顺丁烯二酸酐反应合成了１０种含烷氧基钕单体，将与其ＭＭＡ共聚制得１０种含烷氧钕共聚物，研究了单体和共的的荧光性质及其影响因素......
ＬａＣｕＯ３导电陶瓷是一种能在氧化气氛中使用的高温发热体新材料。本文作者按照实际使用的样品尺寸了含Ｃａ＾＋２的ＬａＣｕＯ３导陶瓷的低温烧结性和导电性关系。......
本文用１０－钨铈（Ⅳ）酸钠溶液通过阳离子交换树脂制得了１０－钨铈（Ⅳ）酸溶液，并用冻析法制得了固体１０－钨铈（Ⅳ）酸，通过化学分析，得知其组成的Ｈ６［ＣｅＷ１０Ｏ３５］．１９Ｈ２Ｏ，并对１０－钨铈（Ⅳ）酸......
