碳化的

Boron carbide,friction coefficient,wear rate,tribochemical reaction

碳化硼-碳化硼摩擦副的摩擦磨损特性研究。

The crystallitic carbon was prepared from anthracite by demineralization and carbonization,then the magnesium/carbon nanocomposites for hydrogen storage were manufactured through reaction milling of the mixture of magnesium,crystallitic carbon and aluminium under hydrogen atmosphere.

将无烟煤进行脱灰和碳化，制备微晶碳，再将微晶碳和铝添加到镁中，用氢气反应球磨法制取镁/碳纳米复合储氢材料。用透射电子显微镜、选区电子衍射、X射线衍射和差示扫描量热分析对储氢材料的粒度、晶体结构和放氢温度进行了测定。

With cellulose as the skeleton, gelatinized cassava starch solution and tungsten carbide were used as porogenic agent and inert densifier, respectively. The matrix prepared showed good sphericity and a logarithmic symmetrical distribution of particle size.

取得的主要结果如下：纤维素基复合层析基质的物理功能化：以再生纤维素为骨架，碳化钨粉末为增重剂，糊化木薯淀粉为制孔剂，采用&反相悬浮热再生法&和成球后去除淀粉方法，成功制备了纤维素/碳化钨复合微球，可用作层析介质的基质。

These results indicate that tungsten carbide decorating on the surface of carbon nanotube is one of the effective ways to improve its electrocatalytic activity.

这说明将碳化钨复合到纳米碳管的外表面是提高碳化钨电催化活性的有效技术方法之一。

By means of molecular designing, a series of sodium branched-alkyl benzene sulfonates weresynthesized through seven process, involving Frieded-Crafts reaction, Grignard reaction, sulfonationand neutralization. Those isomers have similar structure, carbons of same quantity, but the position ofalkylaryl dissimilarity. Liner fat acid, metaxylene and halogenated hydrocarbon of different carbonnumber were used as the starting materials. Optimum processing condition was confirmed consideringinfluence of a series of reaction factors such as feed proportioning, quantity of catalysts, quantitysolvent, reaction time, temperature and pressure. Eight kinds of isomers of sodium hexadecylxylolsulfonates were finally synthesized, and characterized by FT-IR.

本文通过分子设计，以不同碳数直链脂肪酸、间二甲苯以及不同碳数的卤代烷为原料，经酰基化、格氏反应、加氢还原、磺化及中和等反应，合成了结构相似、烷烃链碳数一定、芳基在烷烃链不同位置的烷基芳基磺酸盐同分异构体；并考察了原料配比、催化剂用量、反应时间、反应温度、溶剂用量、反应压力等一系列因素对各反应的影响，进而确定最佳工艺条件，最终合成出十六烷基二甲苯磺酸钠的八种同分异构体，利用 FT-IR 对产物结构进行了分析。

CNTs were first pre-treated using acid solution (HNO3) to obtain CNTs functionalized with carboxylic groups. Subsequently, the stearyl alcohol was grafted onto CNT with the assistance of dehydrating agent, N,N'-dicyclohexyl-carbodiimide. Excellent dispersion in organic solvents such as acetone, THF, and chloroform was found for the modified CNTs (CNT-C18). In addition, the PBS/CNTs nanocomposites were then prepared through simple melt-blending. Mechanical properties, thermal behavior, conductivity of resultant polymer/CNT composites were investigated. The results show that excellent dispersion of nanotubes in the PBS matrices was achieved.

为了增加多壁奈米碳管在复合材料中的分散性，将碳管表面进行化学修饰，首先将多壁奈米碳管浸入HNO3溶液中，进行酸化，使碳管表面带有羧酸的官能基，然后再加入十八烷醇，在温和的条件下，藉由N，N'-二环己基碳二亚胺(N，N'-dicyclohexyl- carbodiimide，DCC)脱水剂脱水，使碳管和十八烷醇之间产生酯基的化学键结，改质后的碳管可以分散在acetone、THF、chloroform…等有机溶剂中，结果显示成功的利用DCC脱水剂完成碳管的改质。

The contents of total organic carbon and humic acid carbon in the soil from stone pit were markedly higher than that of the soils from rocky ditch, swallet or stone cavern.

结果表明：喀斯特石漠化区阔叶林土壤有机总碳含量和腐殖酸碳含量明显高于灌木林、灌草丛和稀疏草丛，而土壤水溶性有机碳含量的变化则相反；喀斯特森林退化后，土壤有机碳的累积量减少、流失量增加；喀斯特小生境土壤有机总碳和腐殖酸碳含量存在明显的水平空间变异：石坑＞石沟＞石缝＞石洞。

To treat, combine, or impregnate with carbon, as when casehardening steel.

使渗碳，碳化使与碳一起处理，使与碳混合或使充满碳，如将钢的表面粹火硬化

To harden the surface of.To treat, combine, or impregnate with carbon, as when casehardening steel.

使渗碳，碳化使与碳一起处理，使与碳混合或使充满碳，如将钢的表面粹火硬化

The retorting process of coals using hot char as solid heat carrier lines up every single process which is needed for the production of CMS.

以灵武煤半焦GLW-72为原料，粉碎至粒度＜160目，混入40wt%的亚硫酸盐纸浆废液成型，将成型物在N〓气保护下，以10℃/min的升温速率加热到900℃碳化45min，冷却到室温所得碳化产品用于变压吸附空分，可获得含N〓96.3vol%的富N〓气体；将上述产品进一步作碳沉积处理，可获得空分性能达98.4vol%的炭分子筛，该结果与在同一空分装置上测得的国外炭分子筛的空分性能（98.23vol%）相当。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。