查询词典 sic

With the increase of the additives, the flexural strength will be improved, but fracture toughness will decrease as the result of the strengthening of the interface between carbon fiber and matrix due to increase of grain boundary phase, which causes the failure of the pullout of fibers.

随着烧结助剂用量的增加，虽然复合材料的抗弯强度不断提高，但由于晶界相和AlN-SiC固溶体量的增加，使纤维与基体的结合过强，从而导致纤维不能发挥拔出作用，复合材料的断裂韧性值降低。

Moreover, we are concerned with hydrogen content in films and discuss its effect on photoelectricity of films.

进一步结合衬底预碳化以及对衬底的偏压作用，得到了高质量的纳米β-SiC薄膜。

The results show that the photosensitivity of samples is influenced by the processing parameters of preparation and it is almost identical at room and high temperature.

可以看出，SiC薄膜在研究高温光敏器件领域具有很好的应用前景。

The students will understand the phy sic behavior of cutting, such as cutting

加工及质量控制的基本概念、理论和实验方法，详细介绍了金属切削刀具

The identification rule is that the value of the reduced wave vector for the FTA mode and FTO mode having the maximum intensity is equal to the hexagonality of the polytype.

在Raman光谱中，最大强度的FTA模和FTO模应出现在其简约波矢 x等于该多型的六角度h处，据此对4H-SiC单晶中的多型进行了鉴定。

At higher temperatures it is also worth noting that SiC grain growth, mainly associated to the β→α transformationand more specifically to the 6H→4H polytype transformation, is now encouraged and acts as a competing phenomenon to densification, therefore causing less densification, along with higher weight losses as temperature is increased.

在较高的温度，这也是值得注意的是，碳化硅晶粒生长，主要是与β→α转化相关联的，更具体地向6小时→ 4 小时的多型转变，这正是现在提倡并实施的一种浓缩竞争现象，因此当温度升高，伴随着重量减轻，形成较少的浓缩。

Key words: SiC monocrystals;temperature gradient;growth rate;polytype;enlarged growth

作者简介：李现祥（1977－），男，博士研究生，研究方向：半导体材料。

But the volume fraction of particles in composite fabricated by prefabricate method was finite.

但是预制件法制备的复合材料的颗粒体积分数有限，无旋涡机械搅拌法的制备温度高，故这两种方法均不适合制备体积分数高（大于 20％）、颗粒尺寸小的复合材料而利用半固态机械搅拌法，能够将颗粒尺寸为3.5μm；体积分数为40％的SiC颗粒加入到金属Al中，但是当颗粒体积分数大于30％时，机械搅拌方式不能将颗粒均匀地分散在基体金属中。

Debonding and pullout of the fibers play an important role in the toughening of these composites.

碳纤维的脱粘和拔出对Cf/SiC复合材料的增韧起到了重要的作用。

A phenomenological model was established in order to explain the "quantum jump" of the emitting current.

用高分辨电子能量损失谱研究了SiC单晶的表面声子和表面吸附情况。

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。