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Using ethyne as source gas, CNTs were successfully synthesized by CVD method. By comparing different synthesis technics, the influences of parameter to the grow of CNTs, such as catalysts, growth time, reaction temperature and ratio of all kinds of carrier gases were investigated. The results showed that the influence of carrier gas, reaction temperature, and the growth time on synthesis of CNTs was significant. In conclusion, a better condition for carbon nanotube growth was obtained. Through analyzing Raman Spectrum of samples, GM and SWNTs' characteristic peak-RBM was indicated.

采用乙炔为碳源、氢气和氩气为载气,利用气相催化热解法在AAO模板上成功的制备出了纳米碳管,用TEM,SEM,EDS,Raman等表征方法研究了生长温度、裂解时间、载气含量和不同催化剂对碳纳米管的石墨化程度、产物形态的影响,指出了单壁碳纳米管的特征振动模式—径向呼吸振动模以及拉伸振动模式G模,缺陷导致的D模,并采用蒸金后的样品进行了场发射的测试,得到了F-N曲线,与理论符合较好。

ZnO, MgO and SiO_2 powders were covered on top of the alloy as dopants, the effects and principles of the dopants were discussed. Based these, SiC particles were made into preforms with different distribution of air holes by changing the granularity of SiC particles and the content of graphite additive, and the oxidation growth of aluminum alloy melt into the air holes within the preform was controlled to prepare SiC/Al_2O_3/Al composite with inerratic shape. And the SiC particles effect principle to the oxidation of SiC/Al2O3/Al composite was studied.

以ZnO,MgO和SiO_2为引发剂,覆盖在合金表面,讨论了引发剂的添加效果和作用机理;在此基础上将α-SiC颗粒制作成为预制体,通过改变SiC的粒度和石墨造孔剂的含量,调整预制体内部的气孔分布,控制铝合金熔体在预制体孔隙内的氧化生长,制备出形状规则的SiC/Al2O3/Al复合材料,同时研究了SiC颗粒的存在对SiC/Al_2O_3/Al复合材料生长机理的影响。

Here is an astounding fact: Neither the worker in the oil field nor the chemist nor the digger of graphite or clay nor any who mans or makes the ships or trains or trucks nor the one who runs the machine that does the knurling on my bit of metal nor the president of the company performs his singular task because he wants me.

这里有一个令人惊骇的事实:不是油田里的工人、不是化学家、不是石墨或者粘土的挖掘者、不是制造轮船、火车、卡车的人、不是运行机器为我身上铁片压花的人更不是铅笔公司的主席为得到我而执行单一的任务。

Here is an astounding fact: Neither the worker in the oil field nor the chemist nor the digger of graphite or clay nor any who mans or makes the ships or trains or trucks nor the one who runs the machine that does the knurling on my bit of metal nor the president of the company performs his singular task because he wants me.

这真是令人惊异的事:油田工人或化工师家,或石墨、粘土开采工,或者是制造轮船、火车、卡车的人,或者是操纵机器生产金属箍上的滚花的工人,或者是铅笔制造公司的总裁,所有这些人,都不是由于本人需要我而干自己的那份工作的。

And it can be used to connect lower mechanicalnesw graphite,can be used to connect lower mechanicalness graphite,ceramics or glass pipeline,and as supply&drain stuff pipe for tanker,store pot,vesssl or used to nalance pipeline displacement, dimension change or used to balancepipelinedisplacement,dimension change or eliminate high frequency mechanical vibration causeed by climate or other frequency mechanical vibration caused by climate or other reasons.

波纹软管通过特殊的加工方法,改变了以往管道不能弯曲的特性,它可用来连接机械较低的石墨、陶瓷或玻璃管道,可作槽车、贮藏、容器或反应釜的给、排料管,可进行管道错位连接或用来平衡因气候或其它原因引起的管道位移、尺寸变化或用来消除高频机械的振动。

Study on the Percolation Conductive Behavior of the Conductive Composites Using classic statistic percolation theory, the conductivity behaviors of the PET/EG、PA6/EG and PA6/PET/EG composites were investigated, and the percolation thresholds and critical exponents were obtain. The nonuniversal critical exponent should be attributed to the anisotropy of conductivity, the tunneling conduction, the particular structure, the anomaly distributing of the particles and so on.

四、聚合物—石墨导电复合材料的逾渗导电行为运用统计逾渗理论探讨了PET/EG、PA6/EG及PA6/PET/EG导电复合材料的导电机理,得出了各体系的逾渗值和临界指数,并从导电性能的各向异性、逾渗值以上的隧道导电机理、独特的形态结构、导电粒子的不规则分布等方面分析了造成临界指数非普适行为的可能原因。

Hexachlorocyclophosphazene was prepared using phosphorous pentachloride and ammonium chloride as raw material, hccp was mixed with Montmorillonite which aimed to decrease MMT.'s hydrophilicity. Solid state reserve cell of Mg│reformed MMT.│polymer gel containing water│graphite was assembled, and cell performance was tested. XRD and IR results show: When mass percentage lower than 9.1%, hccp mixed with MMT to form homophase, hccp phase was observed in the mixture when percentage higher than 9.1%, for hccp specific diffraction peak appears in XRD data, and 1220cm-1 which was assigned to P=N double bond 's expand vibration appears in IR data.

合成了六氯环三磷腈,并用六氯环三磷腈与蒙脱石混合对其改性,期望能减小蒙脱石的吸水性能;组装电池Mg |改性蒙脱石|含水凝胶|石墨片,并测试电池的性能。X射线粉末衍射数据和红外光谱数据表明:蒙脱石容纳六氯环三磷腈的质量分数在4.8%-9.1%之间,可与蒙脱石形成单一物相,但混合质量分数大于9.1%时,改性蒙脱石出现六氯环三磷腈的特征衍射峰,和1220 cm-1的六氯环三磷腈P=N双键的特征伸缩振动峰,证明为蒙脱石与六氯环三磷腈的两相混合。

The results indicate that the relative atom content of Nd islow contrasted to that of Fe, which results from the weak competitive reaction ofNdCl〓 because of the strong bulk effects. The results of x ray photoelectronspectroscopy reveal that other valence of Fe could be in NdCl〓-FeCl〓-GIC.It is considered as the result of the charge shift between FeCl〓,〓 and graphitein intercalating process. Structural model of RECGIC was supplemented after thinking of the chargeshift between the intercalates and graphite. The characteristic layer distance, I〓, ofstage-1 RECGIC were calculated by the model.

利用能谱分析测定了NdCl〓-FeCl〓-GIC中插入剂的含量,结果表明, Nd的相对含量低于Fe的相对含量,这是因为NdCl〓的空间效应较大,而致使其竞争插入反应处于劣势的缘故。X光电子能谱研究表明,Fe可能有其它价态存在,这是由于在插入反应过程中,FeCl〓、NdCl〓以及石墨间发生电荷转移等作用的结果。

Using cement to prepare the sensible heat storage material,and it is for improving the capability of material by interfusing some matters which have large heat capacity and high heat conductivity.

研究表明:当铝酸盐水泥含量为10%时,材料的抗压、抗折强度能满足工业需求;材料的比热容随温度的升高先增大,在500℃时达到最大,后随着温度的升高反而降低;材料的热导率随着石墨粉含量的增加几乎成直线上升,当石墨含量为5%时材料的热导率大于1.7W/。

The experimental results denoted that the finer pearlite along the austenite boundaries in the as-cast Cr30Ni20NRE steel disappeared first under long-term and high-temperature service condition, and that an umber of Cr- richened carbides were formed due to unila-teral carburizing at long-term and high- temperature, consequently causing Ni to concentrate, bulging and calalyzing decomposition of the carburizing gas.

试验结果表明,长期在高温条件下服役,铸态Cr30Ni20NRE耐热钢中沿奥氏体晶界的珠光首先融入奥氏体,长期高温单边渗碳形成大量富铬碳化物,促使镍富集并起泡形成瘤状物,催化含碳气体的分解;表层瘤状物使辐射管表层疏松,表面积扩张,加快了碳向基体的渗入,提供了碳化物持续长大的条件,并引起沿碳化物周边开裂和奥氏体基体严重萎缩;合金元素的重新分布造成主合金元素铬和镍产生两极分化,镍和硅的富集促使石墨化,与侵入的氧形成内部氧化空洞和膨胀疏松,最终导致构件穿孔失效。

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Do you know, i need you to come back

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