Xrd measurements showed that tio2 in the composites was anatase nano - crystallite with 5 - 10 nm size . sem images showed that some of the tio2 nano - crystallites coated on the surface of the mmt and some of them plugged into the gap between flakes of mmt . combining xrd result with sem images , it was clearly that the mmt and tio2 nanocrystallites formed a netlike nanocomposite structure 用改性的溶胶凝胶法制备了一种mmt tio _ 2复合电流变颗粒， xrd ， sem分析证实tio _ 2是以纳米晶的形式沉积于mmt的片层结构之间及颗粒表面，形成了一种网状包覆的纳米复合结构。
Life time of mn2 + in nano - zns was measured and was found to be close to that of the bulk materials . therefore the quenching centers quench the exciton but not the mn2 + ion self . 2 . the increasing curves are different in film and ethanol colloids because there is diffusion process of quenching centers in colloids 对薄膜样品的荧光增强曲线的拟合表明,颗粒表面猝灭中心数目随辐照时间的衰减函数是非e指数形式;同时考虑溶液中猝灭中心通过向颗粒表面的扩散而逐渐耗尽,很好地解释了溶胶的增强曲线与固体薄膜的增强曲线的不同。
The strong shear cut and grinding force of hlgb horizontal stirring grinding machine is used to the surface of the moderate supersonic carbon and the fusion particles of the cao & sio2 in this paper . the result of xps indicated that the si - c bond is detected on the surface of the particles . the high melting point superfine sic and caco3 are produced on the surface of cao & sio2 , and composite particles are formed 本论文利用hlgb卧式双向旋转搅拌球磨设备，通过正反转搅拌齿及研磨珠工作时产生的强烈的剪切、研磨机械力持续作用于cao sio _ 2熔融颗粒及中超碳黑颗粒表面， xps检测表明，颗粒表面有si - c及ca - co键生成，根据机械化学理论是由于机械力的作用，诱发利用热能难以进行的机械化学反应，在cao sio _ 2熔融颗粒表面生成了sic及caco _ 3新物质，构成包覆型复合粒子。
The infrared results showed that the ir characteristic value l080cm - lof cubic crystal sio , and the absorption peak 460cm - l of mgf , caused by the interaction between f - - mg ' + - p elastic vibration and photon radiation , appeared in the ir spectra . ellipsometric analysis showed that the typical absorption peaks 58lnm , 589nm and 606nm , resulting from the surface plasma resonance of cu panicles and reflecting the absorption on composite film system , appeared in the extinction coefficient k curves of cu ( voll5 % ) mgf , , cu ( vol20 % ) mgf , and cu ( vol30 % ) mgf , cermet films , respectively . with the component of cu increasing , the peak site presented red shift , which was in accordance to the results of ultraviolet - visible spectra 椭偏测试分析表明： cu ( vol15 ) mgf _ 2 、 cu ( vol20 ) mgf _ 2和cu ( vol30 ) mgf _ 2样品的消光系数k曲线中出现了反映复合金属陶瓷体系吸收的由cu金属颗粒表面等离子体共振引起的吸收峰，峰位分别为581nm 、 589nm和606nm ，呈现红移，这些与紫外-可见光谱测试结果相一致；此外， cu - mgf _ 2复合纳米金属陶瓷薄膜光学常数的实验值与考虑尺寸效应修正过的mg理论值总体上符合得很好。
And vibration function make supplies viscidity and interior frictional force of particle reduce greatly , make the sport tempo of the particle of the supplies increase , has increased the number of times of colliding effectively , accelerate cement particle surface hyrate to speed that liquid phase spread , is it fully go on to mix and stir at micro competence to guarantee 而振动作用使物料颗粒间的粘性和内摩擦力大大减小，使物料颗粒的运动速度增大，增加了有效碰撞次数，加快了水泥颗粒表面水化物向液相扩散的速度，从而保证了拌和在微观水平上的充分进行。
In this paper , nanosized al2o3 ceramic particles were chose as reinforcing phase . enhanced with ultrasonic wave the particles were covered with copper using method by electroless plating , the copper - matrix composite was developed by hot - press sintering process of the composite powder . the composition , microstructure , hardness , density and dry sliding wear property of the new material have been studied 研究路线为：选用纳米级al _ 2o _ 3陶瓷颗粒作为增强相，在超声波的环境中用化学镀的方法完成对纳米al _ 2o _ 3陶瓷颗粒表面的金属铜包覆，采用热压烧结成型技术以复合粉末为原料制备成纳米al _ 2o _ 3陶瓷颗粒增强铜基复合材料，研究分析复合材料的成分、组织结构、硬度以及致密度，对试样进行了干滑动摩擦磨损实验。
Because of its excellent properties , such as high strength , high module , wear resisting , and etc . , sicp was added to ferroalloy as a reinforce phase . but the intrinsic difference between the bonds led to poor fabrication of the composites . in this paper , the effects of alloying , sintering , and heat - treatment on the properties and microstructures of sicp / ferroalloy - based composites were studied , : it was found that sic particles reacted with ferroalloy when sintered in 1100 碳化硅因其高强度、高模量、耐热、耐磨等优良性能而被作为颗粒增强体来制备铁基复合材料，但因其共价键与铁基体的金属键之间的本质区别导致两者复合困难，本文拟从基体合金化、烧结及热处理工艺等方面对铁合金基复合材料组织与性能的影响进行考察，具体内容如下：加入fe - cu - c基体中的sicp颗粒， 1100烧结时就已经开始发生分解，但反应不强烈，在颗粒表面镀镍可以延缓基颗粒与基体之间的反应。
The particles distributed hi the matrix of grey cast iron , but some contact each other . the composite layer extend gradually into the substrate . when volume fraction of wc is 36 wt % and 27 wt % , the matrix of the composite is high chromium cast iron , consist of white carbide bars and the austenite . wc particles distributed uniformly , retaining approximately quondam granular form in the composite layer which has an evident interface area with the substrate , with good bonding strength 对不同碳化钨体积分数的灰铁和低铬铸铁基复合材料的微观组织结构分析表明：碳化钨体积分数为52时，复合层内基体为灰口铸铁组织，颗粒直接分布在灰铁基体上，部分碳化钨颗粒有相互接触的现象，基材与复合层之间没有明显的过渡；碳化钨体积分数为36 、 27时，复合层内基体为高铬铸铁，由面块状的奥氏体和白条状碳化物组成，碳化钨颗粒表面固溶于基体组织中，粒形基本保持完整，分布均匀，与基体构成冶金结合，基材与复合层之间存在一个明显的平缓过渡区。
By using laser light scattering ( lls ) and scanning electron microscopy ( sem ) , the particle sizes of ultrafine silicon dioxide diminish and the congeries dispersibility were obviously improved , which shows that the hydrophobic property of ultrafine silicon dioxide after being modified has been much more strengthened , this surface modification provides wide market to reuse ultrafine silicon dioxide waste material 表明超细二氧化硅颗粒表面键合了疏水性有机分子链，蔬水性增强，达到了改性目的，为超细二氧化硅废料的回收利用提供了广阔的市场。
Blinking of the sers spectra and the poisson statistical distribution of the raman signal were observed . moreover spectral diffusion of raman shift with time was reported by the first time according to our knowledge , which could be due to the difference of interaction between varied single molecules and varied silver particles surface , for instance , due to the different adsorption states of dab molecules on the silver surface , which should be a powerful evidence for single molecule detection by sers 我们采用一种简单的方法，将含有dab分子的银胶体溶液滴在铝箔上，激发光聚焦在液滴上直接进行测量，观察到了分子sers信号的“ blinking ”现象，并首次报道了其sers拉曼频移随时间产生波动，这是由于个体分子和银纳米颗粒的相互作用及其在银纳米颗粒表面的l吸附状态不同而导致的。
