查询词典 Al

DTA and experiments of thermal explosion show that the Ti-B_4C reaction can be happened at a relative lower temperature by the ejective heat from Al-Ti reaction because of Al working as a catalyst in Al-Ti-B_4C system.

DTA和热爆试验表明，由于Al起催化剂作用，Al-Ti间反应放出的热量，使得Ti-B_4C间的反应在一个相对较低的温度条件下发生。

The microstructure of ferromagnetics for Fe-Al alloys as well as the effects of alloy elements and heat treatment on the damping behavior and mechanical properties of Fe-Al based alloys have been investigated systematically by means of optical microscopy,scanning electron microscopy.

采用光学显微和扫描电子显微观察等方法，系统地研究了Fe-Al系铁磁性阻尼合金的微观组织，考察了合金元素、热处理工艺对合金阻尼性能和力学性能的影响，探讨了Fe-Al合金产生高阻尼特性的微观机制以及Fe-Al系高阻尼合金的同质和异质焊接性能。

The whole sintering process of SHS converter fettling materials can be divided into three steps. The first step is the decomposition reaction of carbonates and sodium nitrate, which is an endothermic reaction. The second step is the SHS reaction, i. e. thermite reaction, the metal of Al reacts with CO〓, O〓, NO〓, Fe〓O〓 to form Al〓O〓. The speed of thermite reaction is very quick, and accompanied with large amount of heat emission and temperature rise. The third step is the reaction of spinels formation. The Al〓O〓 produced by SHS reacts with MgO to form spinels.

整个SHS补炉料的烧结过程分三步进行：第一步为碳酸盐、硝酸钠的分解反应，属于吸热反应；第二步为SHS反应即铝热反应，金属铝粉与CO〓、O〓、NO〓、Fe〓O〓等反应生成Al〓O〓，反应速度很快，并伴随有巨大的放热和温度升高；第三步为合成尖晶石的反应，SHS反应产物Al〓O〓与MgO反应生成尖晶石。

It is found that from bond population calculation results, the bonding strength of Al—O bond of faces (011) and (011) of gibbsite are stronger than that of face (001). If the proportion of unfold of (001) surface is decreased and the proportion of unfold of (011) and (011) surfaces is increased to same possible extend, the bonding strength of Al—O bond of gibbsite would be more strong.

键布居分析结果表明，整体上氢氧化铝的(001)面的Al—O键的结合力不强，(011)和(110)面的Al—O键的平均键布居数较高，结合力较强；若小幅度降低(001)面的显露比例，并使(110)和(011)面较多显露，就有可能提高氢氧化铝表面的Al—O键的结合力。

The polytype of SiC with Al was 6H, and the one of SiC with Al and N changed from 21R to 2H with the increasing of Al content.

固溶Al的SiC为6H型，而固溶Al和N的SiC其晶型则随铝含量的增加从21R逐渐过渡到2H。

And semi-continuous casting of Al alloys, the grain refiner of Al-Ti-B, Al-Ti-C will be used more widely.

随着铝合金半连续和连续铸造的发展，Al-Ti-B、Al-Ti-C细化剂将得到更加广泛的应用。

The thermal performance of micron-sized Al particles and CU/Al micron-nano composites with WO3 were investigated by differential scanning calorimetry as a function of the equivalence ratio. Mechanisms of thermite reactions have been proposed.

在此基础上，利用DSC分析了Cu/Al-WO3的热反应性能，对比了Al-WO3与Cu/Al-WO3在不同化学配比下的热反应历程，同时分别提出了其相应的反应机理。

The stablity of second phases in iron aluminide matrices is analyzed based on the thermodynamic data of binary alloy, which offers the possibility to fortell the chemical reaction in the composite system, and shows that Al〓O〓 is most stable in Fe〓Al matrices.

复合材料强韧化是Fe〓Al合金发展的方向，利用二元化合物热力学数据，提出预测第二相稳定性的计算方法，认为Fe〓Al基合金中，Al〓O〓是最稳定的第二相。

Because of the high diffusivity and solubility of oxygen in Ti〓Al, once the oxidation layer loss its protection, oxygen can easily enter into the alloy and thus considerable oxygen contaminated region is formed, which would embrittle Ti〓Al alloys and seriously decrease their thermal stability and high temperature properties.

氧在Ti〓Al基合金中具有较高的固溶度，当表层氧化膜缺乏保护性时，氧得以在合金基体表面部分形成厚度可观的氧污染层，使本身塑性就较差的Ti〓Al基合金脆化，从而严重影响Ti〓Al基合金的热稳定性和高温力学性能。

ABSTRACT Using the θ-θ X-ray diffractometer, the structure of liquid Al-Fe system alloys at different composition was investigated at a constant temperature 1550℃. The relationship between parameters of the pre-peak in the structure factor and composition was studied. In addition, the structural change of the liquid hypoeutectic Al-Fe alloy and pure Al etc.

本文利用θ-θX射线衍射仪，在1550℃研究了不同成分Al-Fe合金的熔体结构，探讨了结构因子上的预峰参数随成分变化的规律，以及亚共晶Al-Fe合金和纯。。。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。