石墨的

The preparation of electromagnetic shielding concrete adulterated short carbon fibers and graphite respectively have been introduced in this paper.

介绍了分别掺杂短碳纤维和石墨的电磁屏蔽混凝土的制备，研究了短碳纤维和石墨的含量对混凝土低频电磁屏蔽效能的影响，最后分析了短碳纤维的加入对石墨混凝土电磁屏蔽性能的影响机理，为将来设计高性能低频电磁屏蔽混凝土提供了依据。

The structure characteristics and lubricate theory of nanometer graphite fluoride were analyzed,and tribological properties of nanometer graphite fluoride were researched on four-ball machine.

探讨了纳米级氟化石墨的结构特征和润滑原理，使用四球摩擦试验机研究了纳米级氟化石墨的摩擦学性能。

Because of the nondirectional property of ionic bond and the fully delocalized property of pi electrons on carbon layers, translation will not change the electronic structure of carbon layers, resulting in that A-GIC and AE-GIC hare quite good lubrication as well. The electrons come from metals mainly transfer to the delocalized pi orbitals of carbon layers, and the increase of delocalized electrons will make metal graphite intercalation compound more electro-conductive than graphite itself. Because ionic bond between metals and carbon layers is weaker and its lattice energy is much less than that of typical NaCl crystal, so metals could be left from interlayers. The Mulliken populations of C-C in intercalation compounds are smaller than that of graphite, and the HOMO energy level of GIC is higher than that of graphite too. These Lead to that GIC will easier be oxidized.

由于离子键没有方向性，又由于碳层中的π电子是充分离域的，所以碳层不会由于平移而改变其电子结构，金属石墨层间化合物仍具有很好的润滑性；金属失去的电子主要转移到碳层的离域π轨道中，碳层离域电子增多使金属石墨层间化合物的导电性比石墨增强；金属与碳层间的离子键强度比较弱，其晶格能远小于典型的离子晶体，因而金属易从石墨层中脱出；金属石墨层间化合物中的C-C间Mulliken布居值小于石墨中C-C间的值，且金属石墨层间化合物的HOMO能级也高于石墨的HOMO能级，所以石墨层间化合物中的碳原子较石墨更易被氧化。

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。

AlTiN coating has inconspicuous anti-wear effect on carbide.(3) With the introduce of graphite chips bwteen the frictional surface, the effect of graphite chip on the sliding friction and wear behavior of frictional pair was studied. The results show that graphite chips can reduce the coefficient of friction and frictional temperature, and make the coefficient of friction decrease with the decrease of normal load and rise of sliding speed.

在硬质合金微铣刀高速铣削石墨的刀具磨损和破损研究方面，分析了石墨高速铣削过程中的摩擦学条件，揭示了涂层和非涂层硬质合金微铣刀高速铣削石墨的刀具磨损和破损形态及其机理，研究结果表明涂层早期剥落是涂层的早期破损形式，&抛光&磨粒磨损是涂层硬质合金微铣刀在稳定磨损期的主要磨损机理。

The properties and structure of MgO - C castable were studied. The graphite in castable was processedby three different methods.

本文用三种方法对石墨进行了改性处理，并研究了含这些处理石墨的镁炭浇注料的性能和组织结构。

Since there are real demands to the fine powder of expansible graphite in the market, it was studied that glacial acetic acid were inserted into 2μm5μm micro-graphite using potassium dichromate, potassium permanganate, or ammonium persulphate as oxidant and acid as medium to get FPEG low expansible volume successfully.

针对目前对低膨胀容积的可膨胀微粉石墨的实际需求，本论文研究了在酸性条件下，以重铬酸钾、高锰酸钾或过硫酸铵为氧化剂，成功地将冰醋酸插入2μm5μm石墨层间，制得低膨胀容积的可膨胀微粉石墨。

Cathode Spot Movements and Chopping Current of Pure Graphite and Copper-Graphite in Vacuum.

纯石墨和铜-石墨的阴极斑点与截流值研究。

The effects of expanded volume and thickness of EG on volume resistance and contact resistance were investigated.

考察了膨胀石墨的膨胀体积、膨胀石墨层厚度等因素对膨胀石墨改性复合板的接触电阻和体积电阻的影响。

The other sample was pure single crystal graphite.The cryst...

初步掌握了用无烟煤分别合成多晶石墨和单晶石墨的方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。