查询词典 Nb

9H2O, and niobium ethoxide Nb(OC2H5)5 as starting materials, ethylene glycol monomethyl ether (C3H8O2) as the solvent. 0.1BiFeO3-0.9SrBi2Nb2O9 thin films were prepared on fused quartz substrates using sol-gel processing.

9H2O和乙醇铌[Nb(OC2H5)5]作为起始原料，乙二醇甲醚[C3H8O2]作为溶剂配制掺Fe的SrBi2Nb2O9前驱体溶液，利用溶胶－凝胶法在石英衬底上制备出0.1BiFeO3-0.9SrBi2Nb2O9铁电薄膜。

Mixing enthalpy, mixing entropy, changes of Gibbs free energy and critical cooling rate R were studied and calculated in Cu-Ti-Zr-Nb-Ni-Si hexahydric alloys.

分析计算了Cu-Ti-Zr-Nb-Ni-Si六元合金系的混合洽、混合熵、体系自由能的变化和临界冷却速率R

In the experiments, by means of the advantages of IBAD technology, Ni-Nb amorphous films of about 0.5 μm thick were prepared. And the mechanical and electrochemical properties of the films were investigated by nanoindentation tests and polarization measurements, respectively.

实验中还利用IBAD在技术上的优势，制备了厚度约为O.5μm的Ni-Nb非晶薄膜，并通过纳米压痕测试和电化学极化测量的方法对其力学和电化学性能进行了研究。

By IBAD method, the amorphization ranges obtained in Ni-Nb, Ni-Mo and Co-Mo systems were 20-80 at.

研究结果表明，对于Ni-Nb、Ni-Mo和Co-Mo三个系统，IBAD方法获得的非晶合金形成范围分别为20-80at。

During the actual production, that the oxygen contamination from the crucible material by heat composition increases the oxygen content of molten steel will result in melting losses of the alloys in the molten steel, and will results in more heavier melting losses of the alloys, incontrollable exact chemical content of molten steel, increment of oxide inclusions and bad processability and serviceability, especially in the high strength(σb≥1600MPa) steels and alloys with special performance used in aerospace industry, manufacturing industry for precision instruments and meters, military industry, nuclear industry etc. because these steels usually have a high content of some active alloys such as Ti, V, Nb, Al, RE, etc. and a nearly zero content of dissolved oxygen.

实际生产中，如果炉衬热分解向钢液供氧，势必会造成钢液中合金元素的烧损，尤其是在航空航天、精密仪器仪表制造、军工及核工业部门使用的某些具有特殊性能的高强度(抗拉强度σb≥1600MPa)合金或钢材，因它们通常需要具有较高的活泼合金元素(如Ti、V、Nb、Al、RE等)含量，且钢中溶解氧含量接近于零，炉衬热分解供氧将造成这些合金元素的大量烧损，其结果是钢液化学成分难以精确控制，并增加了氧化物夹杂含量，恶化了钢的加工和使用性能。

Lamellar microstructures of TiAl alloys may be stabilized during exposure at high temperature by the addition of high-Nb element which may decrease stacking fault energy, interlamellar boundary energy and atomic diffusion coefficient.

高Nb合金元素的添加降低堆垛层错能与片层界面能，减小原子扩散系数，可能可以达到提高TiAl合金中片层组织的热稳定性的目的。

The result showed that the reaction mechanism between niobium ion and CS2 is an insertion-elimination mechanism. Intersystem crossing may occur in the reaction Nb+ with CS2 and a minimum energy crossing point has been found.

结果表明Nb+与CS2的反应是插入－消去反应，在反应过程中会发生系间窜越，并且找到了两个势能面的能量最低交叉点。

Although the charge number of isopoly and heteropoly anion was high, they existed mainly in aqueous solution as trivalent and tetravalent anions transferred across the W/NB interface.

系统研究了同多钼酸、同多钨酸、磷钨杂多酸、钒取代的磷钨杂多酸和双1∶11的镝的硅钼杂多酸阴离子在W/NB界面的转移行为，探讨了转移机制和它们在溶液中的存在形式，并计算了有关界面的热力学和动力学参数。

After the as-cast Ti-Al-Nb-W-B alloys being hot isostatic pressed and annealed, then they were heat treated at 1295℃ for 10 h.

将铸态Ti-Al-Nb-W-B合金经过热等静压和均匀化热处理后，再在1295℃保温10h。

The flow stress and microstructure of multicomponent Nb-Ti-Al alloy after hot compression were studied.

对多元Nb-Ti-Al合金热压缩后的屈服曲线和显微组织进行了研究。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。