晶形

The results of IR and XRD for ground cement components show that grinding aids accelerate breakage of chemical bonds especially of Si—O bond in C〓S mineral, enhance crystal lattice distortion, crystal defect and amorphism, thereby enhancing activity of ground materials.

助磨剂作用下磨细物料的XRD、IR分析结果表明：助磨剂加剧了物料的晶格畸变、晶格缺陷及无定形化，加速了物料结构中化学键的破坏，尤其是C〓S矿物中Si—O键的断裂，从而增加物料的反应活性。

It is shown that the mechanical properties including Young's modulus, tensile strength, critical strain and stress under buckling can be enhanced with the decreasing of intershell spacing. The shear strength can be enhanced by 2-3 orders of magnitude when the intershell spacing is reduced to 20%, which is also dependent on commensuration. Zigzag-type carbon nanotubes have higher shear strength. The axial stress in tubes when the load transferring from outmost tube to inner tube is observed as well.

研究了单壁纳米管束横截面的六方化失稳现象，给出各种管径的面内压力－应变关系曲线；每条曲线都给出一个明显的拐点而且有很强的非线性；线弹性模量与参考构形有关，也受管直径的影响；分析了管束横截面的晶格不稳定性特征，表明晶格的缺陷能够明显的减小临界值；模拟了在不同应变下纳米管束对静水压的反应，发现不同压力下的截面形态不同，在很高压力下相邻管之间会形成化学键。

Based on the non-isothermal transformation theory and non-steady state nucleation theory, a new method for calculating the continuous cooling transformation curve and the critical cooling rate of bulk metallic glass alloys is put forward in this paper.

在非等温转变理论以及非稳态形核理论基础上提出了计算大块非晶合金连续冷却转变曲线和临界冷却速率的新模型，以用于评估合金的非晶形成能力。

By model 4 (letting both PEO and POM well crystallize) and model 5 (decreasing temperature at a rate of 10°C/min), when PEO content is 5%, the blend forms amorphous PEO existing among POM lamellae. When PEO content is 10%, the blend forms interfibrillar segregation crystalline structure.

在所有降温模式的共混物中，当PEO含量为5％，降温模式4时共混物的综合力学性能最优，原因是此时形成了无定形PEO存在于POM球晶微纤晶间的结晶结构，且POM的结晶度最大。7。

During the process of peptization and hydrothermal crystallization, the aggregation behavior and the resulting morphology of nanocrystalline titania (TiO2) were studied by X-ray diffraction, scanning electron microscope, and dynamic light scattering techniques.

通过XRD、SEM和动态光散射粒度测定仪研究了胶溶及水热晶化过程中纳米TiO2晶粒聚集行为及形貌。实验结果表明，在胶溶无定形沉淀过程中所形成的大小为10-15nm的锐钛矿型胶粒或金红石型胶粒易定向聚集成更大的、具有(30-50)nm×(80-100)nm的次级晶粒。含有次级晶粒的溶胶前驱液在水热晶化过程中，次级晶粒发生崩裂并生长成结晶度更高的大小约为10-30nm球形和大小约为20-60nm棒状纳米TiO2

In this dissertation, we changed the PECVD technique parameters, and deposited amorphous, microcrystalline and polymorphous silicon films.

本论文通过改变PECVD工艺条件，制备了非晶、微晶和多形硅三种氢化硅薄膜。

The membranes were transformed from amorphous phase toα-Al_2O_3 crystalline phase by 5 hours annealing at 800℃and 910℃. At the same time, aluminum and amorphous alumina were found by XRD patterns. The membrane had little change in front side after 5 hours annealing at 800℃, while the back side was transformed from ruleless distributing to cluster distributing.

膜在800℃及910℃下退火5h后，由非晶态的氧化铝转变成为晶态的α-Al_2O_3，但同时也有铝单质和无定形结构的氧化铝存在，膜在800℃下退火5h后的正面没有太大变化，背面由无规则的分布变为簇状分布。

Little quantity of sulphur occur in forms of enclave and anhedraal,subhedral,euhedral crystal. The crystal size ranges from0.01mm to1. 00mm and little of size around 1μm.

少量呈包体形式产出，它形～半自形～自形晶，粒径在0.01mm～1mm间，极少量的在1μm这些硫化物中的硫，含量略低于其相应矿物的硫的含量。

By applying electromagnetic vibration on solidification front of Sn-10Pb alloy,creation of equiaxed grain zone in ...

在低强度电磁振荡条件下，凝固组织细化和等轴晶化的原因是：电磁振荡力对金属初生晶的周期性拉伸、压缩、剪切、折弯、扭转等机械作用，使其出现断裂和剥落，增加形核数量；电磁振荡的局部搅拌作用使固/液界面前沿的温度和成分趋于均匀化，导致梯度降低，抑制了柱状晶的生长。

TiC has a refinement to both primary and eutectic borides, some of which can act as the substrate for primary boride making refinement, the remainder inserting into the primary boride imped it growing in matrix; TiC inserting into the primary boride impedes the eutectic boride growing on the primary boride and decreases the formation of large block eutectic boride.

TiC对初生硼化物和共晶硼化物均有细化作用：一部分作为初生硼化物异质形核核心使其细化，另一部分在基体中嵌入初生硼化物阻碍其生长；嵌入初生硼化物的TiC改变了共晶硼化物依附初生硼化物的特点，使共晶硼化物分布细小均匀。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。