合金的基体

The results show that dynamic softening is easy to occur in these ingots and flow stress becomes steady finally; the material constants of hot deformation are procedural parameters that stress-level coefficient α, strain rate sensibility exponent m and deformation activation energy Q are all increased with strain increasing, while stress exponent n is decreased gradually; the values α and m of the alloy homogenized are the biggest and the value n is the smallest, dynamic softening effect of the alloy is the most obvious, which can deform evenly; influence of strain on the value Q of the alloy homogenized is a little and the average value of Q is only 176.5kJ/mol, so the alloy is easy to deform; the alloy matrix shows the regular recrystallization grains when the strain is 50%; dislocation cell structure re-formed in the grains with increase of strain.

结果表明：经不同处理的Al-1Mn-1Mg合金均易发生动态软化并最终呈现稳态流变特征；热变形材料常数是过程量，随应变量的增加，应力水平参数α、应变速率敏感性指数m和热变形激活能 Q 随之增大，而应力指数 n 则逐渐减小；均匀化退火后，铝合金的α和m值最大而n值最小，动态软化效果最明显且变形均匀，在该状态下，铝合金的 Q 值受变形量影响小，平均仅为176.5kJ/mol，易进行热变形；当应变量为0.7时，基体呈现规则的再结晶晶粒组织，随着应变量的增加，晶内重新形成了位错胞结构。

The crystal-lization of this amorphous alloy is a multi-stage continuous nucleation up to saturation process. The local crystallization energy decreases gradually indicating that the thermal stability of the residual amorphous matrix becomes weak at the steady crystallization stage, which is ascribed to the diffusion of boron atoms at elevated temperatures.

进一步研究发现，该非晶合金的晶化为多阶段的连续形核直至饱和的过程；当进入稳定晶化阶段时，剩余非晶的局域晶化激活能逐渐下降，非晶基体的热稳定性降低，这是由B原子的高温扩散导致的。

The strength of SiCp/Al composites hot-pressed above and extruded below, or hot-pressed below and extruded above the solidus temperature of the matrix is higher than that of composites hot-pressed and extruded above or below the abovementioned temperature, and the strength of SiCp/Al composites hot-pressed above and extruded below the solidus temperature of the matrix is the highest.

以基体合金的固相线温度为基准，高温热压、低温挤压或者低温热压、高温挤压的复合材料的强度优于高温热压挤压或者低温热压挤压的复合材料，并且高温热压、低温挤压的复合材料的力学性能最优。

Low temperature ordering of FePt thin films has been achieved by using a thin equiatomic AuCu underlayer.

提出并利用相干生长的多层膜中有序－无序转变过程的彼此关联作用，借助AuCu缓冲层的低温有序化，降低FePt薄膜的有序转变温度200℃以上，为FePt薄膜的低温有序化开劈了一条新途径；制备多层膜，退火形成有序相FePt纳米颗粒分散在Ag基体的复合结构，比FePt/Ag共溅射或合金多层膜方法的退火温度明显降低；通过缓冲层Ta控制FePt的粗糙度和晶界密度，同时界面附近Ta、Pt发生化学反应，两者共同促进薄膜内Pt原子的有效迁移，从而加速FePt有序化；进一步，在Ta和FePt之间插入Bi薄层，强化Ta、Pt的扩散，在更低温度下形成高矫顽力的有序化FePt薄膜且FePt晶粒之间交换作用大大减弱；发现MgO薄膜作底层，可控制与MgO晶粒尺寸大致相当的临界厚度以下的FePt有序化薄膜的（001）取向，同时，MgO和FePt的相对厚度显著影响（001）取向FePt的有序化。

The tensile tests show that the yielding strength and fracture strength increase with increasing Co content. The fracture mechanism of martensite phase is transcrystalline fracture, and the γ phase is gliding fracture, it proves that the γ phase improves the toughness of experimental alloys

断口观察发现，基体相为解理断裂，小尺寸的γ相被裂纹绕过或被整体拔出，大尺寸的γ相被拉长、撕裂或整体拔出，说明γ相有利于改善合金韧性，但增韧效果受到γ相尺寸的影响

UCB01S is of oil resistant,acid resistant,alkaliresistant and seawater resistant.more over,there is no lead in the PTFE surface layer and so is particularly fit for bushings in food stuff machines,alkali flow meters,pumps motion elements in pharmaceutical machines,printing machines chemical engineering machines and other ocean industry.this is a triple layers composites bush,the base material being a bronze plate and a film of heat resistant power filled PTFE being calendered onto the sintered spherical bronze interlayer.

UCB01S不锈钢耐腐蚀轴承，是以不锈钢材料为基体，中间烧结耐腐蚀合金粉末，表面轧制以聚四氟乙烯为主的低摩擦材料，经过卷制成型的一种十分有效的耐腐蚀材料。它具有耐油、耐酸、耐碱、耐海水和耐磨损的特点，表面的PTEE材料不含铅成份。在食品饮料机械、印染机械、化工机械、海洋工业耐腐蚀滑动部位最适合使用。

Using the con- tinuous current law to deposit Pt and Fe, then through the high temperature heat treatment , the electrodes were prepared and characterized by scanning electronic microscope, X-ray diffraction, energy disperse spectroscope as well as inductively coupled plasma.

将预处理后的钛片作为电极基体，采用恒电流法沉积Pt和Fe，通过高温热处理得到Ti/Pt-Fe电极，通过扫描电镜、X射线衍射、电子能谱以及等离子发射光谱等方法对所制备电极表面形貌、组分的合金化程度、催化层成分组成以及电极寿命等进行了表征；在煤浆电解过程中，采用两电极体系，对所制备电极的电催化活性进行了测试。

The high temperature abrasive wear test was carried out on a high temperature friction and wear test rig whose test atmosphere can be controlled.

结果表明：碳化物的抗氧化稳定性以及碳化物与基体的氧化大无畏同性对合金在大气气氛中的高温耐磨性起着重要的作用。

The oxide layer is predominantly TiO2, which contains a small amount of suboxides TiO and Ti2O3 between the outmost layer and metallic substrate. The XPS analysis confirms that Al2O3 is located mainly in the outer surface of the modified layers, in which vanadium and vanadium oxide are not detected.

结果表明：随着注入离子能量的增加， Ti6Al4V合金表面改性层的深度明显增加，改性层的外层由一定厚度的TiO2组成，外层与内层基体之间存在Ti2O3和TiO； Al元素在改性层的外层以氧化物形式存在，且该氧化物趋于表面生长；在表面改性层的外层未发现V及其氧化物。

WANG Lang-ping, TANG Bao-yin, WANG Xiao-feng, WANG Song-yan, LIU Ai-guo, TIAN Xiu-bo (National Key Laboratory of Advanced Welding Production and Technology, Harbin Institute of Technology, Harbin 150001, China)Abstract: In order to increase the peak depth of nitrogen atoms during the nitrogen plasma ion implantation of Ti-6Al-4V alloy, the rare earth metal yttrium was used to increase the implantation and diffusion depth of nitrogen atoms. In the experiment, the yttrium ions were implanted under the voltage of 20 kV firstly, and then the nitrogen ions were implanted under 30 kV.

为了提高氮等离子体浸没离子注入Ti-6Al-4V合金时氮原子的峰值深度，利用钇来增加氮在基体中的注入深度和扩散深度，先用20 kV的电压进行钇等离子体浸没离子注入处理，然后用30 kV的电压进行氮等离子体浸没离子注入处理。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了