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Process and mechanism of electrodeposited Zn-Fe-Si02 composite coatings were studied, including some contents as follow: Potential-pH plots of Zn-H2O and Fe-H2O systems were drawn, and the thermomechanical analysis was made. Results showed that the region of zinc and iron's codeposition was wide, which provided theoretic basis for electrodepositing Zn-Fe alloy. But the balance potential of zinc was greatly different from iron's, so in order to make zinc and iron codepositing, some complexant must be added into electroplating solution.

本文研究了电沉积Zn-Fe-SiO_2复合镀层的工艺和机理，主要包括以下几个方面：绘制了Zn-H-2O系和Pe-H_2O系的电位-pH图，并对其进行了热力学分析，结果表明，锌和铁发生共沉积的区域很大，这就对电沉积Zn-Fe合金的可能性提供了理论依据，但是锌和铁的平衡电位差别较大，所以，必须在镀液中添入一定量的配合剂才能使锌铁产生共沉积。

Global supplier of High Performance Copper, Nickel and Beryllium alloys and the only fully integrated producer of beryllium and beryllium oxide in the world. Brush Laboratories became the Brush Beryllium Co. in 1931 under the leadership of Charles Baldwin Sawyer.

Brush Wellman 是世界领先的高性能铜N镍和铍合金的供应商﹐并且是全球唯一的铍和铍氧化物的综合生产商。1931年﹐在Brush 实验室的基础上成立了Brush 铍产品公司﹐并由Charles Baldwin Sawyer 负责经营和管理。

After heat treatment for 25h and 50h in air, the r phase showed an anisotropy on XRD pattern. The molar fraction of the r " phase formed at the interface between the substrate and the bond coat was calculated and the profile of composition of all elements was modeled after considering the change of heat treatment temperature and time.

多元合金的基体和热障涂层的扩散和界面反应，用相平衡热力学Thermo一ca1C和相变动力学D工CTRA软件对基体/底层界面Y'相的摩尔分数以及整个试样中各元素的成份分布随温度和时间的变化进行计算，计算结果与实验结果有很好的吻合。

Thermal Barrier Coatings is a kind of ceramic layer of excellent high temperature oxidation resistance as well as very low thermal conductivity, which is deposited onto the surface of substrate by the assistant of bond coat layer. TBCs can effectively reduce the service temperature of the protected substrate, alleviate the thermal shock loading, reduce the requirement for cooling air, and so, the thermal efficiency of apparatus is improved. Therefore, TBCs have been widely used in the fields of space flight, chemical industry, and metallurgy or energy sources industry.

热障涂层(Thermal Barrier Coatings，简称TBCs)是一种陶瓷涂层，具有优良的抗高温氧化和非常低的热传导系数，它通过粘结层沉积在耐高温金属或超合金的表面，可以有效降低被保护基材的服役温度，减轻其热冲击载荷，降低对冷却空气的需求，提高器件的热效率，从而被广泛应用于航空航天、化工、冶金和能源等领域。

The results show that the best sintering process for SiC preform is 1100℃, 8 h in vacuum, by which the open porosity is 99.6% and the preform strength reaches 0.57MPa. The thermo-physical characteristics of 57% SiC/Al composites produced by this technique are as follows: the relative density is 98.7%; the thermal expansion coefficient is 7.5×10^(-6)℃^(-1) which almost matches those of GaAs and BeO; the thermal conductivity is 1.65×10^5W/K, which corresponds to that of Cu(15%)/W and decuples that of Kovar alloy; the density is close to that of aluminum and less than that of one fifth of Cu/W.

结果表明：经1100℃真空烧结8h的SiC预成形坯开孔率可以达到99.6%，抗压强度为0.57MPa；所制备的57%SiC/Al复合材料相对密度为98.7%，热膨胀系数为7.5×10^(-6)℃^(-1)，与GaAs、BeO的接近，热导率为1.65×10^5W/K，与传统Cu(l5%)/W相当，是柯伐合金的10倍，在密度上接近Al，不到Cu/W的1/5。

The results show that the best sintering process for SiC preform is 1100℃, 8 h in vacuum, by which the open porosity is 99.6% and the preform strength reaches 0.57 MPa. The thermo-physical characteristics of 57% SiCp/Al composites produced by this technique are as follows: the relative density is 98.7%; the thermal expansion coefficient is 7.5×10-6 ℃-1 which almost matches those of GaAs and BeO; the thermal conductivity is 1.65×105 W/K, which corresponds to that of Cu(15%)/W and decuples that of Kovar alloy; the density is close to that of aluminum and less than that of one fifth of Cu/W.

结果表明：经1 100 ℃真空烧结8 h的SiC预成形坯开孔率可以达到99.6%，抗压强度为0.57 MPa；所制备的57％SiCp/Al复合材料相对密度为98.7％，热膨胀系数为7.5×10-6 ℃-1，与GaAs、 BeO的接近，热导率为1.65×105 W/K，与传统Cu(15%)/W相当，是柯伐合金的10倍，在密度上接近Al，不到Cu/W的1/5。

NF 99 contains chlorinated additives, fatty oil and sp ecial lubricity fortifiers to impart quick release of chip from tool even under extreme high cutting pressure.

NF 99 是一款专为非铁金属而配制的切削油，适用於铜金属、铝金属及其合金的重负荷切削，含有氯化物、脂肪及特殊润滑添加剂，增进其极压及润滑性能，就算在高切削压力下，也能使屑片容易与刀具分离，低的黏度确保了足够的冷却及冲屑性能，都是高速切削所必需。当使用在钢铁金属，此高性能油品同样能达到良好的效果。

The method avoids loose and porous hydrotalcite thin film by traditional chemical conversion method and powder coating method, and has such advantages as simple process and mild synthesis conditions. The obtained hydrotalcite thin film has excellent anticorrosive performance, and can improve the anticorrosive performance of Mg alloy.

本发明避免了传统的化学转化法和粉体涂覆法得到的水滑石薄膜结构疏松多孔的问题，且工艺简便，合成条件温和，比传统的水滑石膜层更具有优良的抗蚀性能，可以提高镁合金的耐腐蚀性能。

The results indicate that a small amount of Cerium-rich Mischmetal addition refine microstructure and increase ...

因此，压铸AZ81的常温和150℃抗拉强度和屈服强度随稀土加入量的增加先略有提高，然后持续降低；室温延伸率随稀土加入量增加而连续下降，对150℃温度下的延伸率无明显影响；但富铈混合稀土的加入显著提高合金的蠕变抗力。

Self-fluxing Fe-Cr-Ni-B-Si alloy prowders are laser clad on medium carbon steel substrate of dimensions 80×35×10mm〓. The investigation results of this clad layer are: micro-defects, micro-cavity and occluded forin substance, are the micro-cracks and crack resourses in clad layer; crack of coating propagates along the boundary of two kinds of eutectic sutructure; The included angle θ between the cracking direction and laser scanning direction in multitrack overlapping clad is smaller than that in one-track clad because of crack propagating along crystalline growth direction and crystalline direction in overlapping zone being different from it in one-track clad.

在调质态的45〓钢表面，采用预置粉末法进行FeCrNiBSi合金的多道搭接激光熔覆，对其熔覆层进行分析表明：多道搭接激光熔覆层裂纹扩展方向与激光扫描方向间的夹角θ与单道熔覆时相比明显变小，前者θ0°，后者θ角基本都为90°，这主要是因为多道搭接时，搭接区结晶方向发生了变化以及裂纹沿结晶方向扩展所致；激光熔覆层裂纹大多是以覆层与基材交界面的孔洞、熔覆层内不同方向共晶团间的显微缩孔、夹杂物的边界等三种显微缺陷作为裂纹源，并沿低熔点物相形成元素偏析造成弱化膜的共晶团界面扩展延伸。

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。