查询词典 mischmetal

The effect of Mg addition on the modification of Al—Si eutectic alloy by mischmetal was studied.

本文研究了Al—Si共晶合金中镁对稀土变质作用的影响。

Results obtained show that the range of quasi-solid is equivalent to the range of hot brittleness, and B, Ti as well as mischmetal all lower the quasi-solidus and enhance the strength around solidus and the increase rate of strength of the alloy.

研究结果表明，合金的准固态区即热脆性区，B，Ti和稀土都能降低合金准团相线温度，提高强度增长率和准固相线附近的强度，稀土的作用强于B和Ti。

The Ce and La particulates in mischmetal were dispersively distributed into the Mg melt before the formation of Al RE compound and may serve as substrate for heterogeneous nucleation with 0.05% mischmetal addition.

过热处理工艺对Mg Al系合金有明显的细化作用，但不同成分的合金所需的过热温度不一样，通常的过热温度在液相线温度以上 15 0℃到 2 6 0℃之间[1] 。

In the alloy studied in present paper,the mischmetal content is lower than the stoichiometrical composition,and some elements such as Co and Ni or Al-rich phase precipitation have occurred at the grain boundaries.

研究的合金中稀土元素含量低于化学比，晶界有Co，Mn和Al富集相析出。

The effects of cerium-rich mischmetal on microstructures and mechanical properties of the die-cast magnesium alloys are investigated.

结果表明：少量加入稀土能起晶粒细化和固溶强化作用；随加入量增大，稀土以晶界和穿晶条状脆性相存在，对合金强度的损伤作用大于强化作用。

The effects of La-Pr-Ce mischmetal on the microstructure and mechanical properties of the testing cast Mg-7Li-1Al alloys have been investigated by means of mechanical property measurement,optical microscopy,scanning electron microscopy and X-ray diffractometer.Influence of the aging treatment on microstructure and mechanical properties of the test Mg-7Li-1Al-xLPC alloys have-been studied.Similarly,heat treatment strengthening mechanism of cast Mg-7Li-1Al-xLPC alloy and strengthening mechanism of La-Pr-Ce mischmetal cast Mg-7Li-1Al has also been discussed in depth.

通过进行力学性能测试试验，并采用光学显微镜、扫描电镜、X射线衍射仪等现代材料分析测试手段，研究镧镨铈混合稀土对Mg-7Li-1Al合金组织和性能的影响；分析时效处理对Mg-7Li-1Al-xLPC合金组织和力学性能的影响程度；并且探讨了镧镨铈混合稀土对Mg-7Li-1Al合金以及时效处理对Mg-7Li-1Al-xLPC的强化机理。

The purpose of the present work was to investigate the effect of mischmetal addition in Galfan coatings.

在Zn+5%Al合金中，稀土的加入可以加强初始β相晶体和共晶晶粒的形核。。。

Another rare earth compound Mg_3La is found when mischmetal content is more than 3%.

当添加稀土量较大(≥3%)时，检测发现了另一种稀土化合物相Mg_3La。

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。

By using magnetron sputtering technique, the rare earth films including Ce-rich mischmetal, La-rich mischmetal, lanthanum and yttrium were prepared on glass, ITO glass and Si substrates under the vacuum environment. The crystal structure, surface morphology, electrochemical properties and optical performances during the hydriding/dehydriding process were investigated, the reaction mechanism and invalidation reason were analyzed as well.

本文采用直流磁控溅射方法分别在玻璃、ITO玻璃和Si片等基体上制备了富铈、富镧、La和Y等稀土系薄膜，对所制备的稀土薄膜在气态和电化学充放氢过程中的晶体结构、表面形貌、电化学性能和光学性能等进行了研究，并对其反应机理和失效原因进行了探讨。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新