查询词典 rare earth

The effect of misch metal and yttrium on the ageing behavior of AZ91 magnesium alloy was investigated.Aluminum compounds of rare earth and yttrium with high melting point were crystallized fiirstly from the melt alloy during the solidifying process and pushed to the crystalllizing face of α phase to inhibit its growing,or became the nucleation of the matrix.

在AZ91镁合金中添加稀土和钇之后，高熔点的铝稀土化合物和铝钇化合物在凝固过程中首先结晶析出，并成为基体相的形核中心，或者被推移到初生α相结晶前沿，阻碍α相的生长，使其铸态组织得到细化。

Misch rare earth ; alloys ; storage ; hydrogen ; properties

混合稀土；合全；贮藏；氢；特性

The technology for rare earth treatment of molten steel was developed.

开发了用稀土处理钢液的工艺。

The results show that the average size of the rare earth-doped molybdate particle is about 1μm.

结果表明：制备的稀土钼酸盐粉体平均颗粒尺寸约1μm，且无需球磨便为分布均匀的类球形颗粒。

Owing to the good stability in light, heat and chemical characteristics, the rare earth-doped molybdate is a good kind of luminescent material, but there are few reports on it.

稀土钼酸盐发光材料由于具有良好的光热稳定性和化学稳定性，是一种很好的发光基质材料，但关于稀土钼酸盐发光材料的研究却少有报道。

Therefore, this paper explores a new synthesis method, namely, the solid state combustion method, to synthesize the rare earth-doped molybdate successfully.

为此，本论文探索了新的合成方法，即固相燃烧法，成功制备了稀土钼酸盐系列发光材料并对发光性质进行了研究。

Cerium is one of the most abundant rare earth elements in both bastnasite and monazite.

铈元素在氟碳铈矿和独居石矿中天然丰度很高。

A gray lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite.

一种有光泽的灰色金属元素，稀土属，用于特殊合金中，见于氟碳锑矿或独居石中。

A soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process.

一种软质的黄白色三价金属元素，稀土属，能通过离子交换过程从氟碳锑矿或独居石中重新获取。

The reaction of the mixed rare earth concentrate including monazite (REPO_4) and bastnaesite (REFCO_3) decomposed by CaO and NaCl additives in the temperature of 100～1000 ℃ was studied by means of XRD and TG-DTA.

用XRD和TG DTA热分析技术，研究了含独居石和氟碳铈镧矿的混合稀土精矿在100～1000℃焙烧过程中，添加CaO，NaCl时，REPO4和REFCO3的分解反应。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。