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催化石墨化作用
相关语句
  catalytic graphitization
     The State and Catalytic Graphitization of Boron in Carbon/Carbon Composites
     硼在碳/碳复合材料中的状态及其催化石墨化作用
短句来源
     The Catalytic Graphitization Effects of B_4C in C/C Composites
     碳化硼对碳/碳复合材料的催化石墨化作用
短句来源
  “催化石墨化作用”译为未确定词的双语例句
     (2) Boron has catalytic effect of graphitization.
     (2) 硼具有催化石墨化作用
短句来源
     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。
短句来源
     By means of XRD,XPS,the state of boron,boron oxide and the effects of their catalystic graphitization in C/C were studied; the affecting factors to graphitization degree including temperature,catalytic kinds and catalyst amount were also analysed.
     通过X射线衍射(XRD)、X射线光电子能谱(XPS)等手段,检测了硼、氧化硼在C/C中的状态,研究了它们对C/C复合材料的催化石墨化作用,分析了石墨化温度、催化剂种类及其用量对石墨化度的影响。
短句来源
     Furthermore, it has been found that Co particles have catalytic effect on the graphitization of carbon, which becomes obvious with the increase of Co content in composite microbeads.
     热处理过程中复合微球中钴对碳的石墨化有催化作用,钴含量越大,这种催化石墨化作用越明显。
短句来源
     XRD and Raman analysis revealed that a little amount of titanium could increase the degree of graphitization and coherence length of L,, decrease layers spacing of d002- The degree of graphitization of DT-15 was 96.4% and the value of L, was 306nm.
     经XRD及Raman分析表明,原料中掺杂适量的钛粉,在材料制备过程中可以起到催化石墨化作用,使材料的石墨化度及微晶尺寸增大,晶面层间距降低。 其中,DT-15的石墨化度为96.4%,微晶尺寸La为306nm。
  相似匹配句对
     (2) Boron has catalytic effect of graphitization.
     (2) 硼具有催化石墨化作用
短句来源
     catalyst A340;
     催化催化 ;
短句来源
     CATALYTIC TITRATION
     催化滴定
短句来源
     The Catalytic Graphitization Effects of B_4C in C/C Composites
     碳化硼对碳/碳复合材料的催化石墨化作用
短句来源
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  catalytic graphitization
Possible mechanisms for governing hybrid production, which occurs with smaller CNCs (>amp;lt;100?nm) with only certain metals and carbide, are discussed on the basis of thermal and catalytic graphitization.
      
Catalytic graphitization of hardwood acetic acid lignin with nickel acetate
      
Catalytic graphitization of hardwood acetic acid lignin (HAL) with nickel (II) acetate was investigated regarding the production of highly crystalline carbon.
      
Thus, highly crystalline carbon was produced from HAL by catalytic graphitization without compromising the fusibility of HAL by adding a small amount of organic nickel salt.
      
In recent years the phenomena of catalytic graphitization have developed considerably.
      
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The carbon fibre electroplated continuously by a compound coating of

用连续电镀法在碳纤维表面镀Cu后再镀Ni,制备了镀覆Cu-Ni双镀层的碳纤维,研究了Cu-Ni双镀层与碳纤维的高温相容性。并用镀Cu-Ni的碳纤维制备了Cu基复合材料,测试其弯曲强度、线热膨胀系数和电阻率。结果表明,Cu-Ni双镀层在高温下转变为面心立方的Cu-Ni固溶体,克服了在高温下Cu镀层的球化缩聚行为和Ni镀层对碳纤维的催化石墨化作用,且不影响碳纤维的拉伸强度。由于在界面上形成了可溶解微量碳的Cu Ni固溶体而增加了碳纤维与基体的结合强度,复合材料的弯曲强度显著增加,断口上的碳纤维拔出长度大为减小,复合材料的界面属于溶解结合型界面。

The boron doped short carbon fiber reinforced furfuryl acetone resin derived glassy carbon matrix C/C composites were fabricated by addition of powdered carbon and boron.By means of XRD,XPS,the state of boron,boron oxide and the effects of their catalystic graphitization in C/C were studied;the affecting factors to graphitization degree including temperature,catalytic kinds and catalyst amount were also analysed.In result,boron exists in C/C in the state of solid solution;through such catalytic mechanisms...

The boron doped short carbon fiber reinforced furfuryl acetone resin derived glassy carbon matrix C/C composites were fabricated by addition of powdered carbon and boron.By means of XRD,XPS,the state of boron,boron oxide and the effects of their catalystic graphitization in C/C were studied;the affecting factors to graphitization degree including temperature,catalytic kinds and catalyst amount were also analysed.In result,boron exists in C/C in the state of solid solution;through such catalytic mechanisms and attracting electron to break bond,replacing carbon atom to eliminate defects,the glassy carbon and fibrous carbon,which are more non graphitizable,can get higher graphitization degree.On condition that temperature is 2100℃,boron is less than 5 0wt%,the graphitization degree of glassy carbon matrix C/C is up to 82%,which is increased by 11% than that of 2500℃ graphitized C/C without catalyst It is shown that boron can decrease graphitization temperature sharply.

以糠酮树脂作粘结剂,添加树脂碳微粉、硼类催化剂、短切PAN基高强碳纤维,制得了含硼C/C复合材料。通过X射线衍射(XRD)、X射线光电子能谱(XPS)等手段,检测了硼、氧化硼在C/C中的状态,研究了它们对C/C复合材料的催化石墨化作用,分析了石墨化温度、催化剂种类及其用量对石墨化度的影响。结果表明,硼以固溶体的形式存在C/C复合材料,通过吸电子断键、代替碳原子消除缺陷等机理形式,使最难石墨化的玻璃碳和纤维碳达到了石墨化。在石墨化温度是2100℃、催化剂硼用量小于5.0wt%工艺条件下,玻璃碳基C/C的石墨化度达到了82%,而无催化剂的C/C在2500℃下石墨化度才达到71%。这表明硼在降低石墨化温度方面有明显作用。

Thermal conductivity of some doped graphite was investigated in order to discuss the effect of dopants on the doped graphite. Results show that the doped graphite exhibits higher thermal conductivity than the pure graphite produced by same process. Thermal conductivity of the graphite can be improved by doping titanium. And doping titanium and silicon simultaneously into the graphite can improve the thermal conductivity much greatly. Adding boron can result in the decrease of thermal conductivity for boron can...

Thermal conductivity of some doped graphite was investigated in order to discuss the effect of dopants on the doped graphite. Results show that the doped graphite exhibits higher thermal conductivity than the pure graphite produced by same process. Thermal conductivity of the graphite can be improved by doping titanium. And doping titanium and silicon simultaneously into the graphite can improve the thermal conductivity much greatly. Adding boron can result in the decrease of thermal conductivity for boron can go into the lattice and form defects of graphite lattice. XRD analysis shows that the doped graphite has large crystalline and high graphitization degree.

制备了一系列掺杂石墨并研究了其导热性能。实验结果表明 ,与相同条件下制得的纯石墨相比 ,掺杂石墨的导热系数均有较大的提高。掺杂钛组元可使石墨材料的导热性能有所提高 ,而硅组元的加入可大大提高石墨材料的导热性能 ,硼组元的加入则使石墨材料的导热性能明显下降 ,这与硼原子可溶入石墨晶格而造成晶格缺陷有关。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。

 
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