查询词典 X alloy

The result from X-ray diffraction showed cellular decomposition dominated the initial aging of Zn-Al based alloy prepared by rapid solidification with single roller.

通过100℃等温时效XRD分析可知，单辊快淬锌铝合金早期时效过程中胞状分解反应为主导。

The influence of Ce, Nd and Sr on the as-cast microstructure of AZ91 alloy was investigated by optical microscope、scanning electron microscope、electron probe microscope analyzer、differential thermal analyzer and X-ray diffract analyzer, et al.

本文以目前使用最广泛的AZ91镁合金为研究对象，分别添加不同含量的稀土元素Ce、Nd和碱土元素Sr，研究了三种元素对AZ91镁合金微观组织和腐蚀性能的影响。

To 4. 4%, V from 0% to 11% is analyzed by heating and fast cooling test, diffracted X ray, color microstructure, XPS. Theory basis is provided for applications of the series alloy, as confirmed crystallize phase species and crystallize temperature, established the Fe-C, Fe-V bi-paraconstitutional diagrams and the tri-papaconstitutional diagrams relationship between the combatant to C and V and the primary crystallize phase, obtained relationship between component of alloy and solidification organizing.

确定各结晶相种类和结晶温度，建立了C、V含量与初生相关系的准3元状态图和Fe-C，Fe-V的准2元状态图，获得了合金成分与凝固组织的关系，为该系列合金的应用提供了现论依据，使根据组织要求而进行合金成分设计成为可能。

The results show that the technical parameters and the concentration of sodium molybdate have obvious effect on the composition of the alloy. The crystal grain size is from 6.2 to 12.7 nm and changes with current density, temperature and the pH value of the electrolyte.The crystalline growth of the alloy accords with the model of three-dimensional growth. The surface morphology is mainly determined by the rate competitions between the growing direction of vertical surface and the expanding direction along the surface towards circumambient. The results of the X-ray data show the presence of the multiphase containing solid solution and intermetallic compound in the deposits. The deposit phases alter from the FeNi and FeMo solid solution to the FeNi and MoNi4structure at 3 A/dm2. The deposits internal stress increases linearly with the decrease of the grain size. The lattice parameter of the deposits are slightly distorted

结果表明：工艺条件和钼酸钠浓度对合金组成的影响较大；所得合金晶粒尺寸为6.2~12.7 nm，并随电流密度、温度和电镀液的pH值的改变而变化；合金的晶体生长符合晶核三维生长模型，镀层表面形貌由平行和垂直于基体的生长速度的相对大小决定；镀层物相为固溶体和金属间化合物的多相结构，当电流密度为3 A/dm2时，镀层物相由FeNi和FeMo固溶相转化为FeNi和

The results show that, Au-19.25Ag-12.80Ge brazing alloy is better, its melting temperature range is 446.76494.40 ℃, and the temperature interval between the solidus and the liquidus is 47.64 ℃. When the brazing temperature is in the range of 510550 ℃, the alloy has a good spreadability and wettability with Ni. Interface structure observation reveals that there is one continuous intermetallic layer between the brazing alloy and the base metal Ni when welding. X-ray energy spectrum analysis results show that the intermetallic layer is Ge3Ni5, and because of its brittleness, the overthick intermetallic layer will decrease the shear strength of the welding joint, therefore, the welding technology should be controlled so as to gain an ideal welding interface structure.

研究结果表明：Au-19.25Ag-12.80Ge合金的性能较好，其熔化温度范围为446.76~494.40 ℃，结晶温度区间为47.64 ℃；焊接温度在510~550 ℃范围内时，Au-19.25Ag-12.80Ge钎料合金与Ni基体具有良好的铺展性和润湿性，焊接时钎料合金与Ni基体之间形成了一条连续的金属间化合物层，能谱分析表明该金属间化合物层为Ge3Ni5，由于该化合物较脆，过厚的金属间化合物层使焊接接头的剪切强度下降，故应适当控制焊接工艺以获得理想的焊接界面组织。

The structure was investigated by XRD and TEM, combining with the calculated metastable phase diagram. The results show that it is possible to obtain coupled structure in Zn-2%Cu peritectic alloy by rapidly unidirectional solidification method.

利用X射线衍射仪及透射电镜对层片状组织进行了相组成的分析，并结合计算亚稳相图对该组织的相及组织形成规律进行了分析，结果表明在快速凝固条件下Zn-2%Cu包晶合金中实现共生生长是可能的。

Electrochemical studies are performed to investigate the corrosion resistance of uranium niobium alloy before and after passivated with carbon monoxide.

采用电化学方法研究了铀铌合金经CO( 0 3MPa)钝化前后的电化学耐蚀性能，并用X射线光电子能谱分析了铀铌合金经CO钝化后表面层的组成。

Aim at the Non-destructive testing of thin-wall lead alloy castings, X-ray testing parameters are optimized and the hole-style image quality indicator is designed and manufactured,thus the X-ray testing and the process control of thin-wall curve face lead alloy castings are realized.

针对薄壁铅合金铸件的内部质量检测问题，通过优化射线检测参数和研制孔型象质计，实现了薄壁曲面铅合金铸件的射线检测和检测过程控制，并对在孔型象质计灵敏度控制下的渣孔类缺陷的检出能力进行了分析和试验。

Methods Ten laser welded CW-PA ceramo-alloy rods were fused with porcelain at fusion zone. The porcelain-metal bond strength was measured with pull-through test. SEM examination and EDAX analysis were performed.

方法将10个激光焊接的CW-PA烤瓷合金试棒在焊缝熔区烤上瓷盘，做棒盘实验，测量金瓷结合强度，并做扫描电镜观察和X衍射能谱分析。

Furthermore, it seems that the formation of Ti_3X-phase could not be'restrained by an addition of any transition element to the alloy.

另外，实验结果还表明：合金中添加任何一种过渡族元素都不可能对Ti，X相的形成有抑制作用。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。