粉末化

Powdering techniques have bro ad prospects in the pharmaceutical field, but more efforts should be made to imp rove oily drug of the traditional Chinese medicine.

油性中药粉末化技术在药学领域的运用中有着广阔的前景，在产业化生产与应用中有待进一步提高和发展。

The rapid coarsing of precipitates at powder surface through surface diffusion and its application in the improvement of the fracture properties of hipped Rene'95 will be not only important in theory, but also in practice.

粉末表面析出物通过表面扩散快速粗化，以及利用这种粗化改善粉末压坯的断裂性能的发现有很大的实用价值，为利用预处理方法解决Rene′95粉末高温合金中的原始颗粒边界问题，生产低成本高性能的粉末材料奠定了理论基础。

The effects of the spray-drying process of the ammonium paratungstate and the carburization temperature on the formation of the precusor and WC powder were investigated.

采用喷雾干燥-固定床法制备碳化钨粉末，研究了喷雾干燥和碳化反应温度对制备偏钨酸铵前驱体以及碳化钨的影响，前驱体粉末呈现均匀的球状形态，平均粒径为10~20μm，喷雾温度对影响粒径大小和分布影响小；400℃的进口温度下进行喷雾干燥，喷雾粉末仍然保持偏钨酸铵原来的基本组成不发生分解。

The powderization mechanism was supposed from the morphology structure of the...

借助透射电镜观察了粉末粒子的形态，提出了粉末化机理。

However, the dendritic lithium and lithium powderization will be produced during the charge process, therefore the potential safety problem confines the commercial application for lithium anode.

但由于充电时产生枝晶和表层粉末化，存在的安全问题限制了其在商品化电池中的应用，这一问题如果得到解决，将促使锂二次电池早日走向市场。

Results showed that the proper conditongs were temperature 80～90℃,pH value 11,CR244 15%～20%,coagulant calcium chlorid with 2～4phr by forward feeding.

研究表明，适宜的粉末化工艺条件为：温度80～90℃，pH值11，PCR 244质量分数为15%～20%，凝聚剂以氯化钙水溶液为佳、其用量为2～4份；凝聚方式以正凝聚法为佳。

The results show that nano-crystalline NiAl intermetallic compound can be synthesized by MA taking elemental powders of NixAl100-x(x＝25,30,40,50) as green reactants. Supersaturating solid solution NiAl intermetallic compound can be synthesized by MA using nonstoichiometric Ni-Al powders, and the synthesis mechanism is combustion reaction which includes forced solid solution based on atomic diffusion.

研究表明：NixAl100-x四种成分的元素粉末通过机械合金化方法均制备出纳米晶NiAl金属间化合物粉末；非化学计量配比成分的Ni-Al粉末通过机械合金化合成NiAl过饱和固溶合金，其机械合金化合成机理为含有以原子扩散为基础的强制固溶的燃烧合成反应。

B〓C coating possessed 4% of porosity, 12. 8Gpa of bonding strength, 28Gpa of microhardness, and its modulus is up to 230Gpa. It would provide a kind of coating material with excellent properties for many industrial fields.(2) The phase composition of B〓C coating was studied by XPS, XRD and EDS. It was found that: the oxidation activity energy of B〓C powder and coating is different, which is due to the difference of phase composition between them.

用XPS、XRD和EDX研究了碳化硼涂层的相组成，发现碳化硼粉末在涂层形成过程中不可避免的存在分解；比较了碳化硼涂层和粉末在高温下的氧化行为，发现涂层的氧化活化能比粉末要低，这是由于涂层和粉末相组成不同所造成的。

The disordered solid solution Al was obtained for Fe_(25)Al_(65)Ni_(10) mixture powder. The mechanical alloying of Fe_(0.25)Al_(0.75-x)Ni_x(x=0.05,0.175,0.25) mixture powders result in intermetallic compounds. The results of mechanical alloyed_(1-x)Ni_x (x=0.4,0.6) and (FeAl_3)_(1-x)Ni_x(x=0.1,0.3) mixture powders indicate that the ratio of iron and aluminum determines the formation of intermetallic compounds. The FeNi intermetallic compound, cerium oxide and one unidentified phase were obtained by mechanical alloying FeCeNi_3 and Ce_2 mixture powders.

对于合金化过程中的结构演变采用X射线衍射仪、DTA或DSC热分析仪、SEM进行分析，对Al-Fe-Ni和Ce-Fe-Ni两个三元系的机械合金化过程的研究表明：对于Al-Fe-Ni三元系来说，成分为Fe_(25)Al_(65)Ni_(10)的混合粉末经机械合金化后可生成非晶与纳米晶的混合物；球磨成分为Fe_(0.25)Al_(0.75-x)Ni_x(x=0.05，0.175，0.25)混合粉末，可形成Al_3Ni_2，AlFe_3，AlFe_(0.23)Ni_(0.77)，球磨成分为_(1-x)Ni_x(x=0.4，0.6)和(FeAl_3)_(1-x)Ni_x(x=0.1，0.3)混合粉末，Fe与Al比例相同时球磨所形成的金属间化合物也相同。

When surface of TiO2 powder is enveloped by carbon, the reduction is mainly solid-solid reaction between carbon and titanic oxide.

结果表明钛氧化物的还原是逐级进行的，反应过程伴随着相变，当TiO2粉末和C粉末均匀混合时还原碳化反应主要依赖于CO／CO2传质的气固反应，当TiO2颗粒表面被C包膜时主要是碳和钛氧化物之间的固固反应，当TiO2粉末和C粉末混合压球时则两种反应机理均有。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。