niobium相关论文
The solid state synthesis of the phase“Ce3NbO7+δ”, from stoichiometric quantities of CeO2 and Nb2O5, was investigated......
This work presents a preliminary mineralogical characterization of Nb-Ta oxide minerals from alluvial placers located in......
A highly accurate and precise technique for measurement of the 93Nb(n,n')93mNb reaction rate was established for the mat......
采用了氢氟酸和硫酸、氢氟酸和硝酸的混合酸浸出法,对铅细晶矿进行了浸取分离.在最佳条件下,钽和铌的收率达到99％,同时并确保放射性......
以WCo75钎料为研究基础,结合分析Co-Nb和Nb-W二元相图,设计了理论成分比例为Co∶W∶Nb=65∶25∶10(%,质量分数)的合金钎料,以期获......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Using thermomechanical simulation experiment, the kinetics of the isothermal transformation of austenite to ferrite in t......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
The effect of niobium addition on the microstructure of cast AISI H13 hot work tool steel was evaluated by using EDX ana......
The Effect of Nb Loading on Catalytic Properties of Ni/Ce0.75Zr0.25O2 Catalyst for Methane Partial O
In this study,the effect of Nb loading on the catalytic activity of Ce0.75Zr0.25O2-supported Ni catalysts was studied fo......
Cobalt-based catalysts were prepared by a wet impregnation method on carbon nanotubes (CNTs) support and promoted with n......
Thermodynamic Research on Precipitates in Low Carbon Nb-Microalloyed Steels Produced by Compact Stri
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Electrochemical behavior of 304 stainless steel with electrodeposited niobium as PEMFC bipolar plate
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Fatigue small crack growth threshold determination of a high-Nb TiAl alloy at diff erent temperature
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Effect of Nb on the corrosion behavior of continuous bulk metallic glass-coated steel wire composite
(Zr41.2Ti13.8Cu12.5Ni10Be22.5 )100xNbx(at%, x=0 and 8) bulk metallic glasses (BMGs) were coated on the surface of Q195 s......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
The characteristics and generation mechanism of(Ti,Nb,V)(C,N) precipitates larger than 2 μm in Nb-containing H13 bar st......
Effect of Nb and V on the continuous cooling transformation of undercooled austenite in Cr–Mo–V stee
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
The Effect of Nb Loading on Catalytic Properties of Ni/Ce0.75Zr0.25O2 Catalyst for Methane Partial O
In this study,the effect of Nb loading on the catalytic activity of Ce0.75Zr0.25O2-supported Ni catalysts was studied fo......
Ti/Al2O3 composite with improved mechanical properties was synthesized by the spark plasma sintering. The effect of Nb o......
By careful design of rolling schedule, ultra-fine (～2 μm) ferrite grains in a low carbon high niobium (0.09wt%Nb) micro-......
Niobium-promoted Fe/CNTs catalysts were prepared using a wet impregnation method.Samples were characterized by nitrogen ......
Nb-15W-18Si-xHf (x = 0, 5, 10 and 15, mole fraction, %) alloys were prepared by arc melting and then homogenized at1 750......
Thermodynamic Research on Precipitates in Low Carbon Nb-Microalloyed Steels Produced by Compact Stri
Microalloying element Nb in low carbon steels produced by compact strip production (CSP) process plays an important role......
Electrochemical behavior of 304 stainless steel with electrodeposited niobium as PEMFC bipolar plate
In order to enhance the corrosion resistance of 304 stainless steel,niobium was electrodeposited on its surface in air- ......
利用激光熔覆在45#钢表面制备不同铌含量的镍基合金复合涂层.使用扫描电镜(SEM)、X射线衍射(XRD)仪等仪器分析涂层横断面的显微组......
The role of niobium in nickel-based superalloys is reviewed. The importance of niobium as a strengthener is discussed. N......
Influence on electron energy loss spectroscopy of the niobium-substituted uranium atom: A density fu
We present the electronic structure and electron energy loss spectroscopy (EELS) for uranium, niobium and U3Nb in which ......
本文开展了复杂样品中微量Nb的分离技术研究,并用所建立的方法对辐照后不锈钢材料中的Nb进行了分离。试验结果表明,自制的水合五氧......
Conductivity and chemical stability of SrCe0.92Nbo.03Tm0.05O3-δ membrane prepared by modified sol-ge
...
采用热分析法测定了Mn-Cu-Mo球墨铸铁的凝固冷却曲线,并借助于图像分析软件对铸态组织进行了观察和定量分析。研究了铌对球墨铸铁......
粉末冶金制备的FeCrAl合金中存在的原始粉末颗粒边界对合金力学性能及断裂机制的影响目前尚不明确。本工作通过显微组织分析及扫描......
两竹地区铌矿矿石性质复杂,即使同在蒋家堰—天宝铌钽成矿带,其不同矿区矿点的矿石性质都不尽相同,主要含铌矿石类型以及矿石可选......
分析了铌的性质、用途、资源现状、分布特征以及矿床类型,归纳总结了国内外铌矿的选矿工艺,并对铌矿浮选药剂及其作用机理进行了阐......
室温下,以氦为传压介质的准静水压环境中加压到41 GPa,在两柱全景金刚石对顶砧中加压到70 GPa,研究了铌在高压下的强度和状态方程.......
考察了在甲醇乙醇一步合成异丁醛反应中V2O5催化剂的活性稳定性，通过对一步合成反应前后催化剂进行XRD和DTA—TG表征测试，结果表明，催......
Ti处理的超低碳高强度烘烤硬化钢板中加入少量Nb将导致烘烤硬化性严重损害,深冲性和塑性削弱,强度增加.研究表明,固溶C原子减少、......
主要介绍了添加钽、铌硬质合金的种类和性能，并引入一些切削试验数据。...
采用改进分析型嵌入原子方法（MAEAM），对铌、钨晶体的（001）面预熔和熔化过程进行分子动力学模拟。通过计算不同温度的原子位置、层原子密......
以某稀土综合尾矿经磨矿－磁选－浮选处理后的含铌铁尾矿为对象，采用深度还原焙烧的方法分离回收铌和铁，研究还原焙烧条件对铌、铁分离效......
基于铌、钛元素的微合金化技术被广泛应用于低合金钢中,可望为重载车用钢零件性能提升提供助益。本文综述了铌、钛添加后在车用低......
介绍了采用电子背散射衍射测定深冲用再结晶铌板织构的结果。所测铌板的织构为（100）[011]±15°＋（111）[11^-2]织构，随制备工艺的......
用盐酸-过氧化氢溶解试样,在2.9 mol/L盐酸溶液介质中,铌与氯磺酚-S形成稳定的蓝紫色络合物,其最大吸收波长约为650 nm,用分光光度......
采用第一原理密度泛函理论和相对论解析赝势,在局域密度近似框架下研究了过渡金属铌的电子结构、声子发散谱、电声耦合和超导性质......
用氯代磺酚S分光光度法测定低合金钢中铌,该方法操作简便、分析成本低,能满足炉前快速分析要求.......
对一种高性能弹簧钢铸态组织中的含铌析出物进行了观察研究.采用光学显微镜及扫描电镜对析出物形貌、尺寸、分布进行观察,并用能谱......
采用电感耦合等离子体原子发射光谱法（ICP-AES）法测定钛合金中W，Nb，Ta元素的含量。样品采用盐酸、氢氟酸和硝酸溶解，并对仪器工作参数和......
采用杂化密度泛函（DFT）方法优化了过渡金属纯团簇Nbn,Con（n≤4）和二元铌钴团簇NbxCoy（x＋y≤8）的结构,并计算了较稳定结构的NICS（核独立化学......
以白云鄂博铌精矿经预还原后在电炉内熔分所形成的渣铁体系为研究对象,通过实验考察了熔分过程中铌、磷在渣铁两相间分配比的变化......
