1)niobium[英][na?'??bi?m][美][na?'ob??m]铌
1.Influence of carbon and niobium on microstructures and properties of Inconel 718 alloy deposit coating;碳、铌对Inconel 718合金熔敷层组织与性能的影响
英文短句/例句
1.Niobium seamless tubesGB/T8183-1987铌无缝管
2.Niobium rods and barsGB/T14842-1993铌棒材
3.nitrided niobium-titanium-tungsten alloy氧化铌--钛--钨合金
4.OXIDATION OF NIOBIUM AND NIOBIUM ALLOYS AT HIGH TEMPERATURE IN VACUUM铌和铌合金在真空高温下的氧化现象
5.The Study on the High-temperature Oxidation-resistant Coating on Niobium and Nb-base Alloy铌及铌合金高温抗氧化防护涂层研究
6.Lithium niobate single crystalsGB/T14843-1993铌酸锂单晶
7.strontium barium niobate pyroelectric crystal plate铌酸锶钡热电晶片材料
8.Niobium.No longer in scientific use.钶铌的旧名，已被废弃
9.niobate-titanate-tantalate ore铌酸盐－钛酸盐－钽酸盐矿
10.Methods for chemical analysis of tantalum and niobium--Determination of tantalum content in niobiumGB/T15076.1-1994钽铌化学分析方法铌中钽量的测定
11.Methods for chemical analysis of tantalum and niobium--Determination of niobium content in tantalumGB/T15076.2-1994钽铌化学分析方法钽中铌量的测定
12.Methods for chemical analysis of tantalum and niobium--Determination of phosphorus content in niobiumGB/T15076.7-1994钽铌化学分析方法铌中磷量的测定
13.Methods for chemical analysis of tantalum and niobium--Determination of sulphur content in niobiumGB/T15076.8-1994钽铌化学分析方法铌中硫量的测定
14.The Thermodynamic Analysis and Experiment Research on Niobium Enrichment of Baogang Tailing包钢含铌尾矿铌富集的热力学分析和实验研究
15.Methods for chemical analysis of ferroniobium--The paper chromatograph-gravimetric method for the determination of niobium and tantalum contentGB/T3654.1-1983铌铁化学分析方法纸上色层分离重量法测定铌、钽量
16." Methods for chemical analysis of tantalum and niobium--Determination of arsenic antimony, lead, tinand bismuth contents in niobium"GB/T15076.11-1994钽铌化学分析方法铌中砷、锑、铅、锡和铋量的测定
17." Methods for chemical analysis of tantalum and niobium--Determination of iron, nickel, chromium, titanium, zirconium, aluminum and manganese contents in niobium"GB/T15076.10-1994钽铌化学分析方法铌中铁、镍、铬、钛、锆、铝和锰量的测定
18.Traditionally the sealed hat of niobium alloy using in the high pressure natrium lamp adopt the tube of niobium-zirconium alloy to process.传统的高压钠灯用铌合金封帽采用铌锆合金管加工而成。
相关短句/例句
Nb铌
1.Microstructure control of low carbon Nb-microalloyed fine grained dual phase steel;低碳含铌细晶双相钢的组织控制
2.Influence of Nb on wear resistance of surfacing metal of high Cr cast iron;铌对高铬铸铁堆焊层耐磨性的影响
3.Effect of Cu and Nb on Microstructure and Mechanical Property of Multi-layer Weld Metal;铜和铌对多层焊焊缝金属显微组织和硬度的影响
3)Ferroniobium铌铁
1.Research on Method for Fast Determination of Al,P in Ferroniobium;铌铁中Al、P的快速测定方法研究
2.Determination of multi-elements in ferroniobium by inductively coupled plasma atomic emission spectrometry电感耦合等离子体原子发射光谱法测定铌铁中多元素
4)Niobium film铌膜
1.Niobium films were grown by DC magnetron sputtering on CrNi3Mo steel substrates.利用直流磁控溅射在钢基体上沉积了铌薄膜,分别采用扫描电镜、原子力显微镜、X射线衍射仪和电化学分析仪研究了不同偏压下铌膜表面形貌、相结构以及耐蚀性。
2.Influence of sputtering gas pressure on surface morphology, phase structure, wear resistance and corrosion resistance of niobium films has been investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), atomic force microscopy (AFM), ball-on-disc tester and electrochemical tester respectively.采用直流磁控溅射在钢基体上制备了铌薄膜,分别采用扫描电镜、原子力显微镜、X射线衍射仪、球盘式摩擦磨损实验机和电化学分析仪研究了不同溅射气压下铌膜表面形貌、相结构、耐磨性以及耐蚀性。
5)Niobic acid铌酸
1.Hydrolysis of glucose solutions over niobic acid as solid acid catalyst;铌酸催化水解葡萄糖的研究
2.Catalytic synthesis of DnOP by niobic acid;铌酸催化合成邻苯二甲酸二正辛酯
6)tantalum-niobium钽铌
1.Technology survey and development tendency investigation on tantalum-niobium hydrometallurgical extraction;钽铌湿法冶金技术概况及发展趋势探讨
2.The paper suggests that it is of great importance and necessity for the development and operation of tantalum-niobium resources enterprises to develop non-metal mineral product market,according to the particularity of tantalum-niobium resources and their fluctuating market.针对钽铌资源的特殊性及市场经济条件下的起落不定,提出了拓展非矿产品市场在钽铌资源企业开发和经营理念中的异常重要性和必要性。
3.Current situation including advantages and disadvantages of tantalum-niobium industry in china,and the influence of china's entry in to WTO on domestic tantalum-nibium industry are analyzed.通过对我国钽铌工业现状及参与国际竞争的优势分析,加入WTO对于我国钽铌工业的主要影响,提出了我国钽铌工业的发展对策,旨在促成我国钽铌工业在激烈的国际竞争中得到长远发展。
延伸阅读
铌铌niobium一种化学元素。化学符号Nb，原子序数41，原子量92.90638，属周期系ⅤB族。1801年英国C.哈切特从铌铁矿中分离出一种新元素的氧化物，并命名该元素为columbium（中译名钶）。1802年瑞典A.G.厄克贝里在钽铁矿中发现另一种新元素tantalum。由于这两种元素性质上非常相似，不少人认为它们是同一种元素。1844年德意志H.罗泽详细研究了许多铌铁矿和钽铁矿，分离出两种元素，才澄清了事实真相。铌在地壳中的含量为0.002％，主要矿物有铌铁矿〔（Fe，Mn）（Nb，Ta）2Ob〕、烧绿石〔（Ca，Na）2（Nb，Ta，Ti）2O6（OH，F）〕和黑稀金矿、褐钇铌矿、钽铁矿、钛铌钙铈矿。铌是灰白色金属，熔点2468℃，沸点4742℃，密度8.57克／厘米3。室温下铌在空气中稳定，在氧气中红热时也不被完全氧化，高温下与硫、氮、碳直接化合，能与钛、锆、铪、钨形成合金。不与无机酸或碱作用，也不溶于王水，但可溶于氢氟酸。铌的氧化态为－1、＋2、＋3、＋4和＋5，其中以＋5价化合物最稳定。金属铌可用电解熔融的七氟铌酸钾制取，也可用金属钠还原七氟铌酸钾或金属铝还原五氧化二铌制取。纯铌在电子管中用于除去残留气体，钢中掺铌能提高钢在高温时的抗氧化性，改善钢的焊接性能。铌还用于制造高温金属陶瓷。
