In this dissertation , eu2o3 - sc2o3 , y2o3 - sc2o3 co - doped tungsten powders and impregnated cathodes related to these powders have been prepared by pressing , sintering and impregnating for the first time 本论文首次制备了复合稀土eu2o3 - sc2o3 、 y2o3 - sc2o3掺杂的钨粉,通过粉末压制、烧结和基体浸盐的工艺制备了相应的复合稀土/氧化钪-钨基扩散阴极。
These problems result in sintering slowly , and the material performances to become bad . to be compared , the sol - gel method has no these flaws . in the experiments , nanometer powders were prepared by the sol - gel method 溶胶-凝胶法则能够克服这些缺点，因此本研究采用它先生成所需的前驱纳米粉，然后通过常压、冷等静压和热压等工艺来制备ca _ 3co _ 4o _ 9及其掺杂的化合物。
Exhausted by emotion , my language was more subdued than it generally was when it developed that sad theme ; and mindful of helen s warnings against the indulgence of resentment , i infused into the narrative far less of gall and wormwood than ordinary 我还记住了海伦的告诫，不一味沉溺于怨词，叙述时所掺杂的刻薄与恼恨比往日少得多，而且态度收敛，内容简明，听来更加可信。
The aim of the thesis was that the pure cdte thin films were adulterated by the influx technique with different metals , and then we have investigated its configuration and photoelectricity after the anneal treatment 目前,用离子注入的方法在cdte薄膜中掺杂的文献报道的很少。本工作目的就是采用离子束注入的方法对纯cdte薄膜进行不同金属元素的掺杂及热处理,研究其结构和光电特性。
The structure and property of si surface and sio2 - si interface , the diffusion property of ga in sio2 - si compound structure and the segregation rule of ga are summarized in this article , along with the narration of current research of ga diffusion in si 本文首先概括介绍了h表面及h 。内界面的结构与特性， ga在h 。七复合结构中的扩散特性， ga的分凝规律，叙述了硅中ga掺杂的研究现状。
Abstract : new methods of preparing rare earth doped yag phosphors , which contain sol - gel , macro - molecule network gel and precipitation process , were summarized . the structure , luminescence property and grain sizes of the phosphor powders were also described 文摘:本文总结了稀土离子掺杂的钇铝石榴石发光粉末合成的新方法，包括溶胶-凝胶法、高分子网落凝胶法、沉淀法等，并介绍了这些发光粉的性能。
2 、 in order to solve the phenomenon of the outdiffusion of the base dopant , two solutions are suggested : 1 ) the sige : c base can effectively solve the outdiffusion problem ; 2 ) the undoped buffer layer can constrict the outdiffusion phenomenon 2 、为了解决基区杂质外扩现象,提出了两种方案: 1 )采用掺碳的sige : c基区层,能够有效消除外扩问题; 2 )采用未掺杂的缓冲层i - sige ,能够有效抑制外扩现象。
The lattice constants were refined using celref program . when implanted c / fe ions ratio is 0 . 5 % , the p lattice is expanded , though c atom is much smaller han si . this is probably due to the solid solution in interstitial state 单胞的间隙位置，形成间隙型固溶体，使晶格膨胀；当掺杂的碳离子含量增加到一定的程度时，趋向于形成置换固溶体，因为碳和硅属同族元素价态相同，所以碳会置换p 。
For resolve the jahn - teller effect , improve the capacities and cycle performance and decrease the cell price , a series of spinel lithium manganese oxides doped by lithium , nickel and titanium were prepared by liquid method 为解决尖晶石锂锰氧化物在进行深度充放电时的jahn - teller效应问题，提高电池的比能量和电池寿命以及降低电池成本等问题，本文用液相法合成出一系列用锂、镍、钛掺杂的尖晶石锂锰氧化物。
By now , the research has been mature on enhancing the recrystallization temperature and mechanics performance of molybdenum wire in order to prolong its life span and enlarge its employ boundary by doping method . some of the doped molybdenum wire has been manufactured 到目前为止，国内外对于用掺杂的方式提高钼丝再结晶温度和综合力学性能以延长其高温下的使用寿命、扩大其使用范围的研究已比较成熟，有些已投入生产。
