By using x - ray diffraction ( xrd ) , scanning electron microscopy ( sem ) , transmission electron microscopy ( tem ) , differential scanning calorimeter ( dsc ) and optical microscopy , mechanical activation is investigated . and during the study , two new innovative processes or thoughts , " dual activation reactive milling " and " in situ synthesis in salt bath activated by ma " has been presented for the synthesis of nanometer - sized powder . the phase transformation and oxidation control of cu - cr system during ma is also investigated 在采用x射线衍射分析( xrd ) 、扫描及透射电子显微镜( sem tem ) 、能谱分析( eds ) 、热分析( dsc ) 、激光粒度测试等试验手段对ma过程机械激活作用的研究中，发现并提出了“双重激活反应研磨”和“机械激活盐浴合成”两种创新工艺思路；同时，对cu - cr难互溶体系在机械合金化过程中饱和固溶体、氧化物非晶的形成以及氧化现象的控制进行了探讨分析。
In the process of the deposition of the pyrolytic graphite grid ’ s rough , experiment which adopts same discharge and proportion of those gases at different temperature has been done , the test which adopts different discharge and proportion of those gases at same temperature to deposit grid ’ s rough has also been done . at same time , the test which adopts different dilute gases at same technological condition to deposit the grid ’ s rough has been done . in order to obtaining the grid ’ s rough which thickness is able to use , the test has been done at different temperature and depositional time 在研究过程中,试验了在不同温度下采用相同的气体比例和流量沉积热解石墨栅极毛坯;还试验了在相同温度下,采用不同的气体比例、不同的流量沉积热解石墨栅极毛坯;同时,试验了在相同工艺条件下采用不同的稀释气体沉积石墨栅极毛坯;为了获得厚度合适的石墨栅极毛坯,试验了不同温度下采用不同的沉积时间来沉积毛坯;对不同温度下沉积的毛坯进行了x射线衍射分析、密度分析及晶相分析。
The cdte films doped te are deposited onto glass substrate by close spaced sublimation . the x - ray diffraction data indicate the pure cdte films are polycrystalline zinc - blende structure with grain orientation predominantly along ( 111 ) direction . the electrical properties of cdte films are investigated by hall effect measurement using the van der pauw method X射线衍射分析表明，纯cdte薄膜是立方闪锌矿结构， （ 111 ）晶面取向生长； hall效应实验测量发现薄膜电阻很高，呈p型电导，面电阻率数量级达1010
The authors studied the characteristics of element geochemistry , mineral assemblage and microtexture of the white reticulate clay in the quaternary laterite of the dongting basin with some experimental analysis methods , such as chemical analysis , x - ray diffraction analysis , ir and sem analysis . the genesis of the vermiculate reticulate clay and the rhizomatic reticulate clay in the quaternary laterite of the dongting basin are discussed . the formation of crannies or holes in the soil and the transference of soil elements are absolutely necessary conditions to form the white reticulate clay in laterite 在野外考察的基础上，运用化学全量分析x射线衍射分析红外光谱分析和扫描电镜微形貌分析等实验方法和手段，对洞庭盆地第四系红土地层中网纹的元素地球化学矿物组合特征和微形貌特征进行了系统研究，对洞庭盆地红土地层中2种主要的网纹类型蠕虫状网纹和根状网纹的成因进行了探讨。
It is well known that wo3 is a conductance - type semiconductor gas sensing material , but the research on fish freshness detector with wo3 - based gas sensor to trimethylamine is still at a beginning stage . in this project , the wo3 - based gas sensors to trimethylamine are made , and their gas sensing performance are researched , especially at low temperature , the results are as follows : 1 . the nano - sized wo3 powder is prepared by sol - gel method of sodium tungstate and hydrochloric acid , and its microstructure is analyzed by using xrd , sem and tem , for material ’ s microstructure is closely related to gas sensing performance 本课题制备了wo3材料,并以它为基材,制作了三甲胺气敏传感器,研究了其对三甲胺的气敏性能,尤其是低工作温度下的气敏性能,得到结果如下: 1 、本课题以钨酸钠和浓盐酸为反应物,用溶胶凝胶法制备了纳米wo3材料,并采用x射线衍射分析仪( xrd ) ,扫描电镜( sem ) ,透射电镜( tem )对该材料进行结构分析和形貌观察,研究发现材料的微观结构与气敏性能紧密相关。
Further more , atomic force microscopy ( afm ) results showed no noticeable difference in grain size . it ' s concluded that magnetic treatments results in oriented stacking of vopc molecules . this change in crystal structure leads to an improvement in photoconductivity behavior : a photoreceptor used pbpc as the charge generation layer had a much shorter decay time 我们分别制备了氧化锌( zno )酞菁铅( pbpc )和氧化锡( sno )酞菁铅( pbpc )多层异质复合薄膜，对两种结构的复合薄膜进行了紫外-可见吸收光谱测试( uv - vis )和x射线衍射分析( xrd ) 。
Pilsenite is a rare mineral and its information is deficient . the first found pilsenite in china is in gaozhuang , henan province . pilsenite , associated with pyrrhotite , pyrite , hessite , gold , produced in pyrrhotite - polymetallic stage . three bismuth - tellurides produced in gaozhuang are well concordant with the standard pilsenite in composition , and other three are different from any of known bismuth - tellurium minerals . single crystal diffraction were made on a larger mineral grain of pilsenite . au growth and decline together with bi and te in ores and wall - rocks , which suggests that bi and te play a important role in migration and enrichment of au 经电子探针分析，高庄金矿有多种铋碲化物，有三粒矿物的成分与标准叶碲铋矿完全一致。对一较大颗粒的叶碲铋矿做了单晶x射线衍射分析。 au与bi在矿石和围岩中的含量呈共消长关系， te与bi可能对au ag的迁移富集起了重要作用。
