We found that tio2 thin films are a amorphism when they are not annealed ; they are anatase when annealed at 300 c ; rutile occured be anneled at 700 ; ti02 thin films are transformed into rutile completely when be anneled at 1100 . oxygen - sensing properties of tio2 thin films were analysised , and we found the variation law of sensitivity with the partial pressure of o2 and temperatures . sensitivity increases with po2 / ( po2 + pn2 ) at a constant temperature . the higher working temperature is , the slower sensitivity increasing with po2 / ( po2 + pn2 ) is 对tio _ 2薄膜氧敏器件特性进行了分析，发现灵敏度随工作温度和氧分压变化的规律， 400以上时，在一定工作温度下，随氧分压的增加，灵敏度逐渐升高；工作温度越高，随p _ ( o _ 2 ) ( p _ ( o _ 2 ) + p _ ( n _ 2 ) )的增加，灵敏度增加越缓慢，在400下灵敏度随氧分压增加最快；在我们所测试的工作温度点中， 400时具有最高的灵敏度，相对于他人的工作此温度是比较低的。
Too much oxygen content in the atmosphere will oxide the boron carbide surface , the infiltration will not occur . at too low too low infiltration temperature , the wettability between the boron carbide and aluminum are so poor that the infiltration will not occur too . all kinds of aluminum alloy in this study infiltrate the boron carbide preform , but the pure aluminum infiltrated the preform most completely 气氛中的氧分压过高，碳化硼表面被氧化，浸渗无法进行；浸渗温度过低，碳化硼与铝之间不能达到良好润湿，浸渗也无法进行；在本文实验条件下，几种铝合金都可以与碳化硼复合，但复合效果不同，其中以纯铝l4的复合效果最佳。
Firstly , the tio2 thin films are deposited by dc reactive magnetron sputtering apparatus , and characterlized by n & k analyzer1200 , x - ray diffraction spectroscopy ( xrd ) , scanning electronic microscopy ( sem ) , alpha - step500 . and it was analyzed that the effect on performance and structure of films with the change of argon flow , total gas pressure , the substrate - to - target distance and temperature 第一、应用稳定的直流磁控溅射设备制备tio2减反射薄膜并通过n & kanalyzer1200薄膜光学分析仪、 x射线衍射分析( xrd ) 、扫描电子显微镜( sem ) 、 alpha - step500型台阶仪等仪器对薄膜进行表征,分析氧分压、总气压、工作温度、靶基距等制备工艺参数对薄膜性能结构的影响。
Begin with the comparation of two widely used methods producing the strontium titanate , the oxalate decomposition method shows its advantage hi the microstructure and future performance . the effect of caco3 is studied , and so is the effect of the donor dopant , such as nb2o5 , y2o3 and la2o3 . the dopant of tio2 is also considered , which involve ti / sr ratio , sintering temperature , oxygen partial pressure , donor dopant , grain growth and future electric performance 从对比草酸盐分解法和固相合成法这两种制备srtio _ 3主晶相的方法开始，在予合成料的制备过程中分析了施主nb _ 2o _ 5 、 y _ 2o _ 3 、 la _ 2o _ 3以及caco _ 3所产生的影响；在tio _ 2掺杂的问题上，综合考虑了ti / sr比、烧结温度、氧分压、施主掺杂、晶粒的微观生长与成瓷后的元件宏观电性能等之间的相互关系。
Two kinds of n - substituted pyrrole ( trimethyl - ( 2 - pyrrol - l - yl - ethyl ) - ammonium iodide and 2 - ( 2 - pyrrol - 1 - yl - ethoxy ) - ethane - sulfonate sodium ) were synt hesized ; poly ( trimethyl - ( 2 - pyrrol - l - yl - ethyl ) - ammonium iodide ) / v2os nanocomposites were synthesized by two methods ( monomer in - situ intercalate polymerization and polymer intercalation in solvent ) . to fabricate vaos sol by melt quenching , oxygen top - blend technique was applied to improve oxygenic part - pressure , decrease the oxygenic anoxic and restrain the increase of v4 + ion when vos was melted . the xos xerogel prepared by the new technique had more complete structure than the vos xerogel which v20s powder was melted in the air 针对以v _ 2o _ 5为原料、熔融淬冷法合成v _ 2o _ 5溶胶、制备v _ 2o _ 5干凝胶薄膜这一方法，提出了在v _ 2o _ 5熔融时运用氧气顶吹工艺这一思路，目的是增加熔体表面的氧分压，减少熔体的氧缺损，使v _ 2o _ 5干凝胶的v ~ ( 5 + )离子含量更高、其结构更完整、性能更稳定。
We have fabricated zno films doped with transition - metal as fe , co , cu in different conditions by using electron beam transpiration method . by analyzing their xrd spectra , we have systemly discussed the crystal structures in different conditions , such as substrate types , substrate temperature , different o2 / ar ratio k , annealing temperature and cu contents 通过对样品薄膜的结构分析，系统研究了在不同的工艺条件下如衬底类型、衬底温度、氧分压、退火温度，以及cu掺杂含量对薄结晶状况的影响，找出薄膜结构最佳工艺参数，获得沿c轴高度择优取向的高质量zno薄膜。
