铌

The invention relates to a synthesis method of wormlike mesoporous columbium oxide, pertaining to the technical field of inorganic porous materials.

本发明属于无机多孔材料技术领域，具体为一种蠕虫状介孔氧化铌的合成方法。

A soft gray ductile metallic element used in alloys; occurs in niobite; formerly called columbium.

一种灰色金属元素，软质，易延展，用于合金中，见于铌铁矿，以前称作钶。

Also, it is heavily used for separating tin and tungsten ores. Besides, jigging method is introduced to handle gold,,tantalum, columbium, titanium, zirconium and chrome bearing primary ores and to separate placer with desirable results achieved.

对于金属矿石，是处理粗、中、细粒铁矿、锰矿的主要方法之一，并大量用于选别锡、钨矿石；跳汰法在处理含金，钽铌、钛、锆、铬的原生矿石和砂石的选别亦能获得良好效果。

The invention adopts surfactant of amphipathic block copolymer as structure-directing agent to be dissolved in alcohol solvent, and niobium sources and aqueous solution of inorganic salts are added as structural promoter to be stirred for a certain period of time in the room temperature to form colloid; the colloid is then heated and volatilized under low temperature to remove the solvent and dried and calcined under high temperature to obtain the mesoporous columbium oxide.

本发明将双亲性嵌段高分子表面活性剂作为结构导向剂溶解于醇类溶剂中，加入铌源和无机盐类水溶液作为结构促进剂，在室温下搅拌一段时间后形成胶体，低温下加热挥发除去溶剂，经干燥、高温焙烧而成。

Columbium alloys,MoSi2,Oxidation-Resistant coatings

在铌合金上制备的MoSi2涂层，高温下形成氧化钼是挥发性氧化物

In niobium alloy containing carbon occurs decarburization in case of contamination by oxygen at higher temperature.

含碳的铌合金，若在高温下受氧沾污，易产生脱碳现象。

And the distribution coefficient of ZrO2 in LiNbO3 is close to one.

并且在掺杂量超过阈值时，铪离子和锆离子在铌酸锂晶体中都具有接近于1的有效分凝系数。

Niobate. On this basis, we study the influence of magnetic field on the erasure process of the

种不同配置的研究发现磁场对掺铁铌酸锂晶体的擦除过程影响很大，能够对擦除时间进行有

The present work shows that the hydrothermal method is superior to the sol–gel method since it may facilely obtain high purity, better crystallinity and uniform morphology lithium niobate powders.

目前的工作表明，水热法优于溶胶-凝胶法，因为它可能facilely获得高纯度，更好的结晶度和均匀形态铌酸锂粉末。

The application of our products in the processing of core-wrapped electric wire, deoxidizer for steel-making, Calcium, Chromium, Strontium, Ferroniobium, Ferromolybdenum, Ferrotitanium and Ferrovanadium will significantly improve the recovery rate, reduce the impurity of the products and enhance the product quality, which sequentially brings more economic benefit to your company.

在生产包芯线、炼钢脱氧剂、金属钙、金属铬、金属锶、铌铁、钼铁、钛铁和钒铁等中使我公司生产的铝粉和铝粒，可提高回收率，降低产品杂质，提高产品品位，从而获得更好的经济效益。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐