石墨相 的英文怎麼說
中文拼音 [dànmòxiāng]
石墨相
英文
graphite phase-
In our country, the graphitized electrode production mainly uses acheson graphitization furnace, which has the disadvantage of long production cycle, large power consuming, low efficiency and control technique
國內生產石墨電極主要採用的是艾奇遜石墨化爐,該石墨化爐生產周期長、能耗大、效率低,而且控制技術相對落後。The allotropes of carbon include diamond, graphite and charcoal, all with the same chemical properties.
碳的同素異形體包括金剛石、石墨和木炭,所有這些物質都具有相同的化學性質。While if pulse laser ablation is applied, the output of mixed target is obviously more than that of plumbago target. the carbon nanotubes prepared by nano - tungsten catalyzer are very straight without any bent and their diameters are under 10nm. it is worth to pay more attention and need to study further
其中以鎢作為催化劑原料與石墨混合製成固體靶,蒸餾水作為流動相時,得到的納米纖維狀產物直徑不到10nm ,而且形狀筆直,值得關注,目前國內外尚無以鎢作為催化劑成功制備納米一維碳材料的報道,因此該研究具有嶄新而廣闊的研究前景。The chemical compositions of sei films formed on the interfaces of a3000 samples in different electrolytes during the first charging process are mainly li2co3 and lioco2r, but their textures are different. the sei films formed in ec - based electrolytes are thin and compact, which can prevent the solvated lithium ions from cointercalating between two graphene layers of the graphite crystallites effectively, therefore samples a3000 have small irreversible capacities and good compatibilities with this kinds of electrolytes. however, the sei films formed in pc - based electrolytes are thick but defective, which could not effectively prevent solvated lithium ions from intercalation, therefore sample a3000 shows large irreversible capacities in pc - based electrolytes and bad compatibilities with this kind of electrolytes
A _ ( 3000 )試樣在六種不同的電解液中,首次充電過程中所形成的sei膜,其化學組分均為碳酸鋰和烷基碳酸鋰,但在ec基電解液中形成的sei膜薄而緻密,可以有效地阻止溶劑化鋰離子插入石墨層間,不可逆容量少,表現出與a _ ( 3000 )試樣有良好的相容性;在pc基電解液中形成的sei膜厚,且有缺陷,不能有效地阻止溶劑化鋰離子嵌入試樣中石墨微晶的層間,不可逆容量大,與a _ ( 3000 )試樣的相容性極差。It is shown that paraffin can be uniformly absorbed into the pore network of expanded graphite, that expanded graphite remains its vermiform structure in pcms, that the phase - change temperatures of composite pcms are similar to that of paraffin, and that the latent heat of composite pcms is are based on the mass fraction of paraffin in the composite materials
結果表明:膨脹石墨吸附石蠟后仍然保持了原來疏鬆多孔的蠕蟲狀形態,石蠟被膨脹石墨微孔所吸附;復合相變儲熱材料的相變溫度與石蠟相似,其相變潛熱與基於復合材料中石蠟含量的潛熱計算值相當。The emphasis was put on how to enhance the real capacity efficiency of active carbon fibers anti carbon nanotubes as compared to expanded graphite
與膨脹性石墨相比,如何發揮活性碳纖維和碳納米管的實際電容效率是目前研究的重點。We select polyethelyne as fundamental resin, natural scale graphite, expanded graphite by self - made, expanded graphite as conductive fillers to synthesize conductive composite through different techniques of compound mixing. the effects of the conductive composites of different conductive fillers and the different dosage of conductive fillers, different technology and the different dosage of compatibilizer ( mah grafted pe ) were studied respectively
本論文就是據于這種思考,選用聚乙烯為基體樹脂,天然鱗片石墨、膨脹石墨、膨化石墨為導電填料,通過選用不同的混合方法合成復合導電材料。研究了不同的導電填料及其用量、不同的工藝方法及相容劑的不同用量對復合體系性能的影響。The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film
試驗結果表明:所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求;聚四氟乙烯樹脂熱分解溫度超過400 ,但在ptfe中加入無機填料會使復合材料吸水率提高,熔融溫度及分解溫度降低,且伴有氧化分解反應;碳纖維表面含有c = o及c - o - c等極性基團,有利於提高其與其它組分的相容性,提高層間剪切強度;均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系,擬合曲線基本能表示各配方的摩擦系數發展趨勢;配方中不加銅粉或不加石墨,其摩擦系數均較高,說明銅粉和石墨應該配合使用;當銅粉15份、石墨60份時,銅粉30份、石墨30 - 40份時,銅粉60 、石墨15 - 30份時,摩擦系數均具有較低值;純聚四氟乙烯樹脂在空氣冷卻時結晶度最大,磨損量也是三者中最大的;同時,固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的:不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副,在金屬表面均可形成潤滑轉移膜,從而減少金屬摩擦副表面間的直接接觸,大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。It was reported that the mechanism of lithium intercalation into or deintercalation from graphene crystal lattices only explained the interaction with the electrolyte, li - ion and electrode material that exists only on the surface of graphite
文獻報道嵌鋰石墨嵌脫鋰離子及充放電機制只停留在電解液與鋰離子在電極表面和電極材料間的相互作用。The potential energy surface scan tells us that the lithium into or out of the graphene layers is the charge - discharge process of li - ion secondary batteries which concurs with the continuous charge transfer between lithium and the graphite layers which synchronizes with the shift of the graphite layer stacking sequences between the abab type and the relatively stable aaaa type
計算結果顯示,鋰離子嵌入碳層的過程中同時伴隨著鋰和石墨間發生電荷連續轉移,同時石墨碳層堆積方式由aaaa型變為abab型,二者協同進行,最終嵌鋰石墨相對于鋰在石墨表面體系較穩定。The result of md simulation means that : ( 1 ) the microstructure in the amorphous carbon has no obvious change, the slippage which is parallel to the fiber axes in the graphite slices of the pyc interphase was found ; ( 2 ) bulk moduli of every part of interphase diminished, young ' s moduli in all three direction of amorphous carbon diminished, young ' s moduli of the graphite slices in the direction of parallel to the fiber radial decreased, and ones in the direction of parallel to the fiber axes increased
分子動力學模擬結果表明, ( 1 )界面相內部無定形碳部分微結構無明顯變化,石墨片層部分沿纖維軸向滑移; ( 2 )界面相模量發生變化,界面相區域各部分的體積彈性模量降低,無定形碳部分及石墨片層部分垂直於纖維軸向的楊氏模量降低,平行於纖維軸向的楊氏模量升高。Tacking asbestos, graphite of ptee as spacing material, it is wound spirally with high quality alloy or stainless steel tape of " v " or " w " shape cross - setion
金屬纏繞墊片是選用優質合金帶或不銹鋼帶材料,以石墨、石棉、四氟作填充材料,作" v "或" w "型相間螺旋纏繞製成。The study showed that the effect of surface tension induced by the nanosize curvature of critical nuclei could drive metastable phase region of diamond nucleation in carbon diagram into stable phase region, consequently, for both of homogenous and heterogeneous nucleation processes, diamond nucleation would be prior to graphite nucleation in competing growth of diamond and graphite upon chemical vapor deposition ( cvd )
研究表明,建立在碳的平衡相圖基礎上,在納米尺寸的金剛石臨界核的曲率誘導下的表面張力效應將金剛石成核的亞穩相區推進到穩定相區,因此無論對于金剛石的均勻氣相成核還是異質成核,在金剛石和石墨的競爭生長中,金剛石成核均優先於石墨成核。Graphite ) and the special viscoelasticity of polymer, interlayer exfoliation of the filler and its nanocompounding with polymers can be realized in the shearing force field of pan - milling, through the effects such as deformation, dislocation, tension - sliding and shearing exfoliation of graphite, the tension - thinning, pulverization of pp, as well as the imbedding, mixing and dispersion of graphite flakes in pp powder etc. the results show that the interlayer exfoliation of graphite and nano - compounding with pp proceeded stepwise, caused by a combination of friction, squeezing, stretching, and shearing in three - dimension during pan - milling
石墨片層的受限空間影響i一pp / yep25o復合材料中pp結晶行為,進入石墨片層間的pp分子一部分擇優取向,形成沿( 040 )晶面法線方向擇優生長的a一晶,另一部分相對分子質量較小、運動活性較高的pp分子則受到石墨片層的擠壓和限制而轉化為y -晶,在i一pp廳ep250復合材料中, y -晶相對含童達34 . 8 % 。Combining with the results of implant test, the conclusion that the main reason of dropping the strength of austenite zone is the micro - crack located in the tip of flake graphite and marten site is drawn
結合插銷試驗結果提出了馬氏體相變過程中,在片狀石墨尖端及馬氏體組織中造成的微裂紋是奧氏體區強度下降並進而在外力作用下斷裂的主要原因。It is thought that the emission process happened with the participation of diamond crystal, graphite, amorphous carbon and intra - face states in the diamond films
認為非晶碳、石墨、金剛石及相應界面態構成一個完整的體系參與場發射,金剛石薄膜中雜相的存在有利於電子的場發射。In water, the apparent viscosity of composite particles is much lower than that of uncoated graphite with the same solid content ; composite particles have good dispersion effect under different ph value with dispersant agent of sodium hexametahposphate. through the analysis of tg - dtg curve, the oxidation resistance of composite particles has been greatly improved
復合粉體水漿體的表觀粘度比相同質量固含量的未處理石墨大大降低,而且在以六偏磷酸鈉為分散劑時,復合粉體在不同的ph值條件下都取得了很好的分散效果。A little ferrite and cementite, through the analysis of the strengther and ductiler, we draw the conclusion that this is very important in reality, observing the graphite nodule in sem and tem, there are many spheroiding element and anti - spheroiding elements in the core and edge of graphite nodule, they form the oxides sulphide and nitride. we draw the conclusion that they may be the core of graphite nodule
在掃描電鏡( sem )與透射電鏡( tem )上觀察石墨球,與傳統石墨球相比低碳球鐵的石墨球呈細小點狀分佈,球墨中心聚集有較多的球化元素而在邊緣處分佈有反球化元素。石墨球中心存在有氧化摘要一物、硫化物以及氮化物等組成的復雜的化合物,經分析認為它們是球狀石墨形核的有效核心。The traditional ag / graphite electrical brush is a kind of excellent electrical contact material. with the increase of the content of graphite, though the properties of lubrication may be increased, the properties of mechanical and electrical are linear decrease. the applications will be very difficulty in complicated environment
傳統銀-石墨電刷材料是一種很好的電接觸材料,但隨著石墨含量的增加,雖然潤滑性能增加但其相對密度、硬度、導電性能都直線下降,已很難滿足現在各種復雜情況下的應用,因此需要採用一種新的方法或材料來代替石墨,即起到潤滑的作用又可增強、導電導熱。Treated by hydrolyze coating way, the surface electric potential of graphite moves and iep changes from 2 - 3 to 8 - 9, reach the one of a1 ( oh ) 3 ; moreover, the wetting angle of treated graphite decreased 10, and the oxidation ratio decreased 20 % when al ( oh ) 3 / graphite ( wt % ) = 10, compared with untreated graphite under the same condition. that is to say, the wetting and anti - oxidation ability of graphite is improved, after treated by hydrolyze coating way
經水解法改性后,石墨的表面電性發生改變,其等電點由2 3變為8 9 ,與al ( oh ) _ 3的等電點相近;與未改性石墨相比,改性石墨與水的接觸角下降約10 。當al ( oh ) _ 3石墨( wt ) = 10時,水解法改性石墨的氧化失重率比未改性石墨下降了約20 ,因此經水解法改性后,石墨與水的潤濕性有所改善,抗氧化性有所提高。分享友人