合金的

In Ni-Al alloys the first peak position of Ni-Al pair correlation function is smaller than the sum of Ni and Al atomic radii, meaning a strong interaction between Ni and Al atoms and a chemical bonding with weak covalence.

计算表明，Ni-Al非晶态合金可以用猝冷法制备，它们的结构与液态Ni-Al合金类似但与液态合金相比更加有序且有部分晶化趋向。

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。

After the initiation of crack, the crack propagating of alloys with 0.5%Ce addition is accelerated evidently because of the appearance of needle rear earth rich phases which dissever the matrix and lead to the decrease of mechanical properties and thermal fatigue resistance.

加入0.5%Ce的合金在裂纹形成后期扩展速度明显加快，这是因为合金中出现针状富稀土相，这种针状相割裂了基体，使得合金力学性能降低、热疲劳抗力下降。

The results show t hat yttrium exists as the form of compound (Al2Y) in AZ31 magnesium alloy, and dystectic Al2Y as the heteromorphic nucleation emerges firstly in the cou rse of alloy precipitation, which refines the alloy's microstructure and obviou sly improves the mechanical properties at room and high temperature. The average grain size of AZ31 magnesium alloy containing Y is reduced by 35.82%. Tensile s trength, yield strength and elongation percentage reach 212 MPa, 147 MPa, and 7. 5% at room temperature respectively, and 117 MPa, 98 MPa, and 10.2% at 200 ℃ re spectively.

结果表明，Y在AZ31 镁合金中主要以块状Al2Y化合物形式存在；高熔点的Al2Y在合金凝固过程中首先析出，成为凝固的异质形核剂，从而细化了合金组织，改善了室温和高温力学性能；由于Y的强化，含Y AZ31镁合金平均晶粒尺寸降低幅度约为35.82 %；室温抗拉强度、屈服强度和延伸率分别为 212 MPa， 147 MPa和7.5%，200 ℃时分别为117 MPa， 98 MPa和10.2%。

However, the interdiffusion of Nb and Cr at the interface might be detrimental to the long-term oxidation resistance and mechanical performance of the substrate.

在与TiAl合金接触时，搪瓷变得不稳定，氧化过程中，涂层与合金界面形成一定厚度的反应层，致使涂层与合金间结合力下降。

Through experiments, a material—clay slurry containing CMC has been found with the room temperature rheological property similar to that of the metalic alloys in solid-liquid state.

本文在自行研制的高熔点合金固液态流变性能测试装置上测定了ZQSn16—5合金和ZG45两种材料固液态流变性能，建立了这些合金流变性能模型和本构方程。。。

The research results show for low Sn concentrations, for example 1wt%Sn with respect to Ni, the Ni/Sn surface alloy is energetically preferred. We have also used XPS to characterize the catalysts. The quantified Sn and Ni XP spectra for Ni/Sn/SLT catalysts show that Sn preferentially segregates to the surface of the Ni/Sn alloy. We demonstrate that supported Ni/Sn alloy catalyst provides significantly higher reforming reactivity and resistance to deactivation via carbon deposition than supported monometallic Ni catalyst both in steam reforming of CH4 and CO_2 dry reforming.

本文以SLT为支撑体，利用Sn对传统的Ni基催化剂进行表面合金化处理，成功制备了Ni/Sn表面合金重整催化剂，将该催化剂用于甲烷和丙烷的CO_2重整和水蒸汽重整反应，研究结果表明，在Sn浓度很低的情况下，例如1wt%Sn含量，从能量角度看更易于形成表面合金，XPS数据也显示Sn更易于富集在Ni/Sn合金催化剂表面。

Alloy can obtain the optimistical combination of strength and ductility in T8 temper: Solution-treated at 510℃ for 1h + water ...

2.2197合金在T6状态欠时效以δ′相强化为主，峰时效以少量δ′、θ′和T1相联合强化为主，虽然T1相的强化效果远远优于δ′、θ′相，但由于该合金不是主要以大量T1相强化为主，因而2197合金只具有中等强度。

The system of phase equilibrium data of the Fe-Cu base alloy is established relatively, the spinodal decomposition range of the Fe-Cu base alloy is calculated utilizing Thermo-Calc software, The composition range of the spinodal decomposition of the Fe-Cu base alloy is prognosticated with more accuracy; The self-formed mechanism of egg-type microstructure of the Fe-Cu base alloy with spinodal decomposition in the liquid-phase region under gravity conditions is theoretically investigated. Based on the analysis and calculation of interfacial tensile stress induced by the temperature gradient in the process of solidification, the theoretical results interpret preferably the self-formed mechanism of egg-type microstructure of the Fe-Cu base alloy through the analyzing of force states of metallic droplet in the rapid solidification.

建立了较为完整的铁铜基合金系的相平衡数据体系，利用Thermo-Calc软件对铁铜基合金系的液相调幅分解成分范围进行了计算，较准确地对铁铜基合金系的液相调幅分解成分范围进行了预测；从理论上对液相调幅分解型铁铜合金卵型结构的形成机理进行了研究，基于凝固过程中由温度梯度所导致的界面张力的分析与计算，通过考察快速凝固过程中金属液滴受力情况，较好地解释了液相调幅分解型铁铜合金卵型结构的自形成机理。

In order to disclosure the reason why the electrocatalysis activeness and selectivity droped after being used several hundred hours continuously, the x-ray diffraction, scanning electron microscopy and energy dispersive spectroscope have been used to characterize the surface condition variations of Monel metal. The results indicated: Monel metal belongs to the Cu-Ni alloy around the electrolysis experiment.And after being used for 600hr, the surface layer element composition and geometry distribution of the alloy changed, namely in the alloy the Cu element /which superficial free enthalpy was smaller,"concentrated" to the alloy surface,and formed one kind of marble structure microcrystallite.Thus the electrode surface becamed rough a

为了揭示蒙乃尔合金阴极在连续使用数百个小时后电催化活性剂选择性下降的原因，采用X射线衍射仪、电子扫描电镜和电子能谱分析仪对电解实验所用的蒙乃尔阴极材料在电解实验前后的表面状态进行了表征，结果表明：所使用的蒙乃尔合金阴极材料在电解实验前后均属于Cu-Ni合金，使用600hr后，由于表面层元素组成和几何排布发生了变化，即合金中表面自由焓较小的Cu元素向合金表面&富集&，形成一种大理石结构的微晶，表面粗糙、不均一，这是造成其对硝基苯电还原的催化活性及选择性随着使用时间延长而逐渐下降的主要原因，同时也为此类电极的修饰改进提供了方向。

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。