粉末化

The causes and mechanism of both carburization and dusting, and carburization kinetics were discussed by means of Grabke Model.

采用扫描电镜、X射线衍射、差示热分析等方法对Ni Cr/BN混合粉末在1250℃烧结时发生的碳化和粉化行为进行了分析，借用Grabke的模型探讨了这种现象产生的原因和机理，并进行了碳化动力学的讨论，提出了预防产生这种现象的措施。

Morphology of Sn-0.7Cu and Sn-3.5Agpowders, the course of mechanical alloying and the effect of ball milling conditionson the formation of mechanical alloy were analyzed using a scanning electronmicroscope, a differential thermal analyzer and an X-raydiffractometer.

利用扫描电镜、差热分析仪、X 射线衍射仪对 Sn-0.7Cu、Sn-3.5Ag 合金粉末的形貌、机械合金化进程、球磨条件对机械合金化合金相的影响、机械合金化 Sn-0.7Cu、Sn-3.5Ag 的反应机制进行了研究。

The companies design and manufacture of paint production line to complete all kinds of metal or non-metallic materials to the surface of oil products, derusting, passivation, phosphate, rinse, electrostatic powder coating, drencher spray paint, paint electrophoresis, drying, curing Such as painting technology.

本公司设计制造的涂装生产线能完成各类金属或非金属材料产品表面的去油、除锈、钝化、磷化、漂洗、静电粉末喷涂、水帘喷漆、电泳漆、烘干、固化等涂装工艺。

Metallographic analysis, analysis for fracture surface of scanning electron microcopy photographs, electron-probe analysis,X-ray powder diffraction analysis, transmission electron microscope analysis have been done for the analysis of microstructurs、fracture apperance、structure,and has carried on the preliminary discussion to the toughening Mechanisms.

采用金相分析、扫描断口分析、能谱分析、x射线粉末衍射结构分析、透射电镜分析对合金化以及引入韧性第二相后的TiFe_2合金的显微组织、断口形貌、微观结构进行了分析，并对合金的韧化机制进行了初步的探讨。

Nano particle after being dispersed fully is added into A1, TiO2 and C powder in the suspension, and through fully mixing and combusting composition, loose blank of nano composite Al2O3-TiC base ceramic is obtained; and the blank is crushed, ball milled and hot pressed to densify, nano composite Al2O3-TiC base ceramic is obtained, which ontains Al2O3 40-55 wt%, TiC 25-48 wt%, nano phase 0.1-25 wt% and sintering assistant 0-2 wt%.

以重量百分比计，将纳米粒子充分分散后，以悬浮液的形式加入Al、TiO2、C粉末中，经充分混合后进行燃烧合成，得到Al2O3－TiC基纳米复合陶瓷的疏松坯体；将燃烧合成所得的坯体破碎、球磨后，进行热压致密化处理，制得含有三氧化二铝40.0－55.0％，碳化钛25.0－48.0％，纳米相0.1－25.0％，烧结助剂0－2.0％的Al2O3－TiC基纳米复合陶瓷材料。

And the electroreduction process of nitrobenzene on WC powder electrode in basic solution is investigated by cyclic voltammetry, linear potential sweep and chronoamperometry. In the process of electroreduction of nitrobenzene on WC powder electrode, liquid phase mass transferring may be the control step.

并且也用循环伏安、线性扫描和恒电位阶跃等测试方法研究了碳化钨粉末电极在碱性介质中析氢和还原硝基苯的电化学特性，发现碳化钨在电催化还原硝基苯过程中，可能主要受反应物的液相传质控制。

Powder metallurgy and magnetic material technology and equipment:Injection forming, pressing, fritting, breaking, polishing, sizing, drying, quenching, reducing, charring, mould and shotting etc

粉末冶金及磁性材料技术、设备类：注射成形、压制、烧结、破碎、研磨、筛分、干燥、淬火、还原、碳化、模具、机床及制粒等粉末冶金应用技术和设备

The effects of such parameters as temperature, pH, feeding rate,concentration, [NH_3]_T/_T molar ratio, surfactants and agitation, on the morphology and size of the particles, were studied and conclusions obtained are as follows:(1) The morphology and size of the particles are mainly decided by the species of nickel oxalates present.(2) Speeding up dissolution-recrystallization process benefits the preparation of the particles of being composed of a single species with uniform morphology and high aspect ratio.(3) The variations of nucleation and growth supersaturation under different conditions have definite effects on the morphology and size of the particles.(4) Adding PVP25 at a proper amount is beneficial to the preparation of fibrous nickel oxalate particles with high aspect ratio. 3 The formation mechanism as well as the morphology and size control of fibrous cobalt oxalate particlesThe cobalt oxalate particles with fibre morphology were prepared using CoCl_2 solution and mixed(NH_4)_2C_2O_4, NH_3·H_2O solution by a double jet process.

研究了温度、pH值、加料速度、浓度、[NH_3]_T/_T摩尔比、表面活性剂及其添加量、搅拌等对颗粒形貌与粒度的影响，主要结论为：(1)草酸镍化合物种类是决定颗粒形貌与粒度的最主要因素；(2)提高陈化中溶解—再结晶速度，有利于得到物相单一，形貌规整，轴向比大的粉末；(3)不同条件下，颗粒形核与生长过饱和度改变，也会对粉末形貌与粒度产生一定影响；(4)适量添加PVP25有利于大轴向比纤维状草酸镍的制备。3纤维状草酸钴的形成机理及其形貌与粒度控制采用CoCl_2溶液与(NH_4)_2C_2O_4和NH_3·H_2O混合溶液并流加料合成的方法，研究了纤维状草酸钴的制备。

The thesis are divided into two parts. In the first part, we used 2,4,6-trichloro-1,3,5-triazine as the precursor to react with sodium which have been achieved by decomposing sodium hydrate at 623 K. At a low reaction temperature of 623 K, carbon nitride nanosphere、porous carbon nitride material and byproduct sodium chloride, would be produced.

本研究将分成两部份，第一部分是在低温下(623 K)将氢化钠粉末热裂解，生成表面积较大的熔融态金属钠，使气态的氰尿醯氯通入与熔融态金属钠在623 K反应，生成奈米氮化碳球、奈米孔洞性氮化碳材料及副产物氯化钠。

In order to make these silver paste successfully used in commercial, a clear understanding is required for the complex relation between different parameters such as particles size, solid volume fraction, packing density on suspension printing and deformation and the mechanism of silver powder sintering shrinkage and the inorganic adhesive effect under the batch manufacture condition.The main emphasis of our researches was to improve the silver paste properties by developing a reliable, screen-printing paste suitable for fine lines and lower sintering porosity and good interface between thick film and glass substrate.

为开发电学性能稳定、高导电率、具有良好细线印刷性能及优良附着性的高性能电子浆料，本研究着眼于对影响参数进行详细剖析，找到关键控制参数，通过研究微观结构与粉末参数的对应关系，找到如何能制备出具有致密的厚膜结构与较低的孔隙率，并且其浆体与有机载体的界面区也要有明显的改善的电子浆体；同时对批量生产的银粉的形态与粉末烧结反应的收缩现象，无铅玻璃体系对银膜致密化等过程进行研究，获得致密高导的无铅银浆料。

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。