石墨

But the concentration of Li2CO3 remains nearly consistent and a new component, CH3OLi, is found in SEI. It can be concluded from these results that anisole reacts with the reduction product of EC and DEC, RCO3Li, in the first process of Li＋ intercalating into the carbon electrode. The obtained CH3OLi is helpful in building up a more effective and stable SEI of the carbon electrode, reducing the cointercalation of solvent molecular. All these contribute to the improvement of the cycle performance of lithium-ion battery.

根据以上分析结果，提出了苯甲醚对锂离子电池循环性能的影响机理：在Li＋嵌入石墨电极的初次过程中，苯甲醚和EC、DEC的还原分解产物RCO3Li发生基团交换反应，生成CH3OLi，该产物能有效提高石墨电极表面SEI的稳定性，减少锂离子嵌入石墨过程中引起的溶剂分子共嵌入，从而改善电池的循环性能。

In the single crystal of C60 with a FCC structure,positron mainly appears outside the C60 molecule.The main annihilation space is the interspace between molecules.The calculated positron bulk lifetime in C60 is 352ps, which agrees with experiment value of 356ps in literature.In carbon nanotube bundles with different dimeters,as the diameter of carbon nanotubes increases,the main space where positron appears changes from the interspace of carbon tubes to the space inside carbon tubes,the radio between positron annihilation with valence eletrons and core eletrons becomes larger,the positron bulk lifetime in carbon nanotube increase rapidly first and come to be a constant at the end.The calculated positron lifetime of carbon nanotube with a dimeter of 0.8～1.6ns is 332～470ps,which agrees with the experiment value of 394ps.Positron annihilation has been studied in widly used compound semiconductors.

计算结果表明：在片层结构的石墨晶体中，正电子主要在石墨层间的空隙中湮没，计算出的石墨中的正电子寿命为208 pS，与文献中的实验结果215 ps符合很好；在金刚石单晶中，正电子主要在碳原子之间的空隙中存在并发生湮没，计算出的金刚石中的正电子寿命为115 ps，文献中的实验结果110 ps左右符合；在面心立方结构的C60晶体中，正电子主要在C60分子球壳内外侧及分子之间存在，C60球形分子中心正电子分布很少，正电子的湮没区域集中在C60分子之间的空隙区域，计算出的C60中的正电子寿命为352 ps与文献中的实验结果356ps相符合；对于不同管径碳米管束中的正电子分布，随着碳纳米管直径的增加，碳纳米管束中的正电子由主要在碳纳米管管间的区域出现转变为主要在碳纳米管管内中心的区域出现：碳纳米管束中的正电子与碳原子的价电子的湮没概率变得越来越大，与核心电子的湮没概率变得越来越小；碳纳米管束中正电子的湮没寿命先迅速增大，而后趋于一定值。

Compared with the graphite, the coefficients of friction of the RL-C/C are lower under the same load of about 0.08-0.12, and the increasing range of the volume losses are still lower than those of the graphite. Compared with the SL pyrocarbon material, the COF and the volume loss of the SL-C/C are about 0.02-0.05 and 0.2 mm^3, lower than those under the same load. The COFs of most RL-C/C and SL-C/C specimens remain stable or decrease slightly with time, while those of the graphite and pyrocarbon specimens increase. The thickness of the integrated friction film of the RL-C/C decreases with load, but the wear surface of the SL-C/C is rough. Tough the wear surface of the graphite is integrated, the serious abrasive wear make the debris move easily and accumulate on the edge of the wear trace to form a restacked morphology. On the wear surface of the pyrocarbon material, some loosed debris, circular worn holes and flake worn out pyrocarbon has been found.

结果表明：PAN炭纤维改善C/C复合材料的摩擦磨损行为；在实验载荷范围内，与高强度石墨材料相比，含RL炭C/C复合材料的摩擦因数降低0.08~0.12；体积磨损量增幅降低；与热解炭试样相比，具有SL炭C/C复合材料的摩擦因数降低0.02~0.05，体积磨损量低0.2立方公厘左右；随着时间的延长，大部分C/C复合材料的摩擦因数基本相对稳定或呈小幅下降，而石墨、热解炭块的摩擦因数均呈不同幅度的上升；具有RL炭的C/C复合材料摩擦表面膜厚度随载荷增加而降低，具有SL炭的C/C复合材料摩擦表面较粗糙；高强石墨能形成较完整致密的摩擦膜，但磨粒磨损严重，磨屑易在摩擦膜边缘形成层状堆积；热解炭块摩擦表面磨屑堆积松散，有较多的孔洞以及热解炭层整体剥落的形貌。

Compared with the graphite, the coefficients of friction of the RL-C/C are lower under the same load of about 0.080.12, and the increasing range of the volume losses are still lower than those of the graphite. Compared with the SL pyrocarbon material, the COF and the volume loss of the SL-C/C are about 0.020.05 and 0.2 mm3, lower than those under the same load. The COFs of most RL-C/C and SL-C/C specimens remain stable or decrease slightly with time, while those of the graphite and pyrocarbon specimens increase. The thickness of the integrated friction film of the RL-C/C decreases with load, but the wear surface of the SL-C/C is rough. Tough the wear surface of the graphite is integrated, the serious abrasive wear make the debris move easily and accumulate on the edge of the wear trace to form a restacked morphology. On the wear surface of the pyrocarbon material, some loosed debris, circular worn holes and flake worn out pyrocarbon has been found.

结果表明：PAN炭纤维改善C/C复合材料的摩擦磨损行为；在实验载荷范围内，与高强度石墨材料相比，含RL炭C/C复合材料的摩擦因数降低0.08~0.12；体积磨损量增幅降低；与热解炭试样相比，具有SL炭C/C复合材料的摩擦因数降低0.02~0.05，体积磨损量低0.2 mm3左右；随着时间的延长，大部分C/C复合材料的摩擦因数基本相对稳定或呈小幅下降，而石墨、热解炭块的摩擦因数均呈不同幅度的上升；具有RL炭的C/C复合材料摩擦表面膜厚度随载荷增加而降低，具有SL炭的C/C复合材料摩擦表面较粗糙；高强石墨能形成较完整致密的摩擦膜，但磨粒磨损严重，磨屑易在摩擦膜边缘形成层状堆积；热解炭块摩擦表面磨屑堆积松散，有较多的孔洞以及热解炭层整体剥落的形貌。

The degree of graphitization had a marked effect on the thermal conductivity at room temperature, especially whe...

石墨材料的导热性能对其石墨化度的敏感程度较大，尤其是当石墨化度较高时表现最为突出。

XRD analysis shows that the doped graphite has large crystalline and high graphitization degree.

XRD分析结果表明掺杂石墨都具有大的晶格尺寸，高的石墨化程度，这与掺杂组元的催化石墨化作用有关。

Coke properties has been studied by high temperature SiC oven、infrared gas analyzer and X-ray diffraction. First set forward the relationship between UPC and coke reactivity, strength, fine coke and coke graphitization, and creatively find the graphitization degree of coke tends to 100% when temp. reaches to 1350℃ UPC is profitableness to coke properties;②The effect of UPC on liquid slag distribution and flow functions in experiment oven has been studied by mathematics simulation The effect of UPC on taking shape and dropping of high titanium-bearing B. F. slag has been studied by using high temp. oven simulation cohesive zone and dropping zone of blast furnace.

为了弄清楚这部分UPC对高炉冶炼钒钛磁铁矿过程的影响，①在实验室利用高温SiC炉、红外线气体分析仪、X—射线衍射仪等进行了一系列UPC对焦炭性能及石墨化度的影响研究，提出了UPC与焦炭反应性、抗压强度、粉化性能及焦炭石墨化度之间的关系，创造性的发现高炉内1350℃以上，焦炭的石墨化度已达100％，UPC对焦炭性能的影响有益而无一害；②采用数学模拟方式研究了UPC对实验炉内液态渣分布及流函数的影响，并利用高温熔滴炉模拟高炉软熔带、滴落带研究UPC对高钛渣滴落性能的影响，采用旋转式粘度计测定滴落渣性能并通过高倍矿相显微镜观察了滴落渣的矿物结构。

When the temperature became higher, the O and N impurity absorbed on the surface of powder reacted with catalyst and formed inertial compositions, wrapped on the surface of graphite powder, then the process of transformation stopped.

在较高温度下，纳米石墨表面吸附的含氮、氧等官能团与熔体金属发生反应生成惰性固态化合物并包裹在石墨表面，阻止了石墨的进一步溶解。

First, different types of conducting materials chosen as raw materials are pressed into different form and different content terrazzo include graphite of 1000 meshes, graphite of 325 meshes, spherical graphite, carbon black, acetylene black and conductive Carbon Black, whose performances of analysis and comparison was made.

在实验过程中，通过选取不同类型的导电填料，制备了不同类型、不同含量的1000目石墨、325目石墨、球形石墨、普通碳黑、乙炔碳黑以及导电碳黑的抗静电地板，并对抗静电地板的性能作了分析和比较，最后选择了乙炔碳黑作为导电填料。

Due to the change of graphite structure the solidification interface of vermicular graphite iron becomes cellular-like, and the solidification interface of nodular graphite iron is rather irregular.

因石墨结构的变化，蠕虫状石墨铸铁的凝固界面呈一种特殊的胞状形态，球状石墨铸铁的凝固界面极不规则。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。