粉末化

Five synthesis methods of AlN powder were discussed, namely direct nitrogenation of Al powder, carbothermal reduction of Al2O3, chemical vapor deposition, sol-gel method, self-propagating high-temperature synthesis and plasma chemical synthesis. The choice of AlN sintering additives and five sintering technologies were analysed, namely hot pressing sintering, pressureless sintering, spark plasma sintering, microwave sintering and self-propagating sintering. The preparation processes of AlN substrate and its influencing factors were expounded.

介绍AlN陶瓷的典型性能和导热机理；讨论AlN粉末的5种合成方法：铝粉直接氮化法、Al2O3碳热还原法、化学气相沉积法、溶胶凝胶法、自蔓延高温合成法和等离子化学合成法；分析AlN烧结助剂的选择和5种烧结工艺：热压烧结、无压烧结、放电等离子烧结、微波烧结及自蔓延烧结；阐述AlN基板的制备工艺及其影响因素。

In this thesis we used two types of low-carbon ductile as the basal of low-carbon ductile cast—infiltration, one is as-cast high-toughness pearlitic low-carbon ductile, the other is as-...

用我们自己配制的合金粉末进行低碳球铁表面铸渗合金化后，得到的表面渗层的硬度最高可以达到HRC58，远远高于母体的硬度。

It is OK that this product mixes equably the stock of liquefaction, wait like pulverous, grain, tiny ball, mixture effect is very advantageous.

该产品均匀混合可以流化的物料，如粉末、颗粒、微丸等，混合效果非常优越。

To synthesize the results of the research above, we found that the well result of the study on activities and detergency are extracted by methanol extracts. It had ability of antioxidant and anti-iflammatory activity on the biological activities. Sapindus mukorossi were surface activity well and stretched less damage on hair. It will raise application value of Sapindus mukorossi on cosmetics.

综合以上之结果，甲醇萃取物为乾燥粉末可增加原料保存性，且发现在生物活性及清洁力试验上皆以甲醇萃取物之效果最好，具抗氧化、抗发炎能力，此外存在表面活性优良性质，对头发强度之伤害性小，因此增加其在化菻~上之应用潜力。

Cold crystallization process of N-(1-naphthyl) succinimide below glass transition temperature was monitored by differential scanning calorimetry and X-ray diffraction.

采用x射线粉末衍射和差示扫描量热分析方法，跟踪研究了N-（1-萘基）琥珀酰亚胺的液氮淬冷样品在室温(25℃)即在玻璃化转变温度以下的冷结晶行为。

A photosensitive resin for UV curing acrylic powder coating has been synthesized by esterification of methacrylic acid and GMA-type acrylic resin at the presence of ethyl acetate as solvent, tetramethylammonium chloride as catalyst, YK as inhibitor.

以醋酸丁酯为溶剂，四甲基氯化铵为催化剂，氮氧自由基为阻聚剂，由甲基丙烯酸缩水甘油酯类丙烯酸树脂与甲基丙烯酸酯化反应制得了UV固化粉末涂料用感光性丙烯酸树脂。

Violet tungstic oxide ; preparation technology ; powder morphology ; tungsten powder ; WC powder

紫色氧化钨；制取工艺；粉末形貌；钨粉；碳化钨粉

The difference between warm compaction and cold compaction of pure iron powders without admixed lubricant was compared with an Instron thermal simulater.

在Instron热模拟机上对不添加润滑剂的纯铁粉进行温压和冷压的实验比较，用扫描电镜、X射线衍射和金相显微镜对粉末及其压坯进行分析，并对纯铁粉的温压致密化机理进行探讨。

The effects of carbonates on the alloying and sintering processes of Fe-Si powder blends were studied.

本文研究了碳酸化合物对Fe-Si混合粉末压坯合金化和烧结过程的影响。

The influence of carbonizing temperature and time was investigated by XRD in this study. The morphology and particle distribution of the powder were observed by SEM.

根据X射线衍射图研究了直接还原碳化温度及时间对反应产物的影响，用扫描电镜观察了粉末颗粒形貌和粒度分布。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。