crystal zone

A Model Study on the Transition from Columnar Crystal Zone to Equiaxed

柱状晶向等轴晶转变过程的模拟实验研究

On formation mechanism of equiaxed - crystal zone in ingots

铸锭中等轴晶形成机理探讨

The little crystal zone distribution which is dispersed contributes to the tensile strength of carbon fibers .

碳纤维强度主要是纤维中弥散分布的小晶区做出的贡献；

Effects of Interaction between Floating Crystals and Solidification Interface on Formation of Crystal Zone in Aluminum Castings

游离晶与凝固界面间的相互作用对晶区形成的影响

The microstructure of fracture surface of HAZ is of granular bainite , with characteristics of coarse crystal zone .

热影响区断口表层剖面组织为粒状贝氏体，显示出粗晶区的特征。

The formation process of crystal zone in commercially pure aluminum specimens was observed carefully through decanting Al casting in solidification .

应用铸件在凝固时的倾出方法详细观察了工业纯铝试样中晶区的形成过程。

The results show that the melting peak temperature of crystal zone of the acquired PVA-g-PLLA decreases with the reduction of average grafting number .

实验结果表明，制得的PVA-g-PLLA的Tg和晶区熔融峰随着平均接枝数量的减少而相应降低。

3 ~ 6nm dispersed carbides on twin crystal zone of martensite have been observed by means of transmission electron microscope .

经透射电镜观察，深冷处理后在马氏体的孪晶带上弥散析出颗粒为3～6nm的碳化物。

Through the analysis of elements affecting the rough crystal zone in pipeline steel weld , it raises the flexing direction of rough crystal zone of pipeline steel .

通过对管线钢焊接粗晶区韧性影响因素的分析，提出了管线钢粗晶区的韧化方向。

According to the distribution of heat and mass in furnace , the temperature area in furnace is divided into crystal zone , reaction zone and preheating zone , and the equation of different area is obtained .

根据合成炉内物质和温度分布的特点，将炉内的温度区域划分成结晶区、反应区和预热区，并给出不同区域的温度分布方程。

The results show chill crystal zone of castings is formed when the solidifying interface captures a large amount and in a continuous way the high density floating crys - tals .

结果表明，铸件激冷晶区是在凝固界面对密度很大的游离晶连续、大量捕获时形成的。

Results indicated that with gradual change of cooling rate , the micro-structure of coniform samples was composed of three portions , namely the amorphous external zone , central crystal zone , and transition zone in-between .

结果表明，由于冷却速率的不同，圆锥形试样的显微组织由表面非晶区、中心等轴晶区及介于两区之间的过渡区组成。

Phase diagram of equilibrium of Ur-H2O system was analyzed . The result shows because there is a crystal zone of saturated urea solution , one-step evaporation is impossible for low concentration urea solution concentrating directly to melt urea .

通过对Ur-H2O体系平衡相图的分析发现，由于要穿越饱和溶液的结晶区，尿液从低浓度进料一次浓缩到熔融尿素是不可能的。

The effect of electromagnetic stirring ( S-EMS ? F-EMS ) on center equiaxial crystal zone proportion , central crack , contraction cavity , looseness in horizontal concasting round billet has been tested and analyzed .

试验和分析了电磁搅拌（S-EMS、F-EMS）对连铸圆坯的中心等轴晶区比率、中间裂纹、缩孔、疏松的影响。

Tis paper describes the effect of superheat temperature of molten steel in tundish , solidification end electromagnetic stirring parmeters on the equiaxed crystal zone and slab defects , such as center porosity , shrinkage cavity , carbon segregation , etc.

研究了连铸中包钢水过热度、铸坯末端电磁搅拌参数与连铸坯中心疏松、缩孔、碳偏析及等轴晶率的关系。

It has been found that the resistance at the surface of carrot is too large for water vapor to pass through and as a result , melting happens on carrot if the time of passing the maximum crystal zone is less than 25 min.

结果表明，当表层材料通过最大冰晶生长带的时间小于约25min时，材料表层对水蒸气的渗透阻力明显增大，在冻干中表层以下的材料温升较快并出现融化。

It was found that scatter loss of POF increased because of the heat-physical-aging , which could reduce the local tropism of polymethyl methacrylate ( PMMA ) polymer and then a few half-crystal or crystal zone formed ;

发现热物理老化减少了PMMA聚合物中的局部取向，使其形成少量的半结晶或结晶区，增加了其散射损耗；

It is shown that the ball-like structure is formed only in the surface layer , the crystallinity , crystal zone and crystalline density are depended on the solvent used , and the change of crystallinity with treating time can be used as the measurement of solvent permeation kinetics .

表明球状结构仅在表层形成，结晶程度、晶粒尺寸和晶区密度都依赖于所用溶剂，同时结晶度随处理时间的变化可用作溶剂渗透动力学的测定。

In this paper , the present status of the silicon single Crystal floating zone doping process is essentialized .

本文介绍了目前区熔掺杂方法的现状、区熔气相掺杂的优点和基本原理及工艺。

To resolve the conflict between the transverse resolution and depth imaging range , an approach to realize dynamic focusing in OCT using liquid crystal Fresnel zone lens is proposed .

针对OCT系统横向分辨率和纵向成像范围间的矛盾，提出一种基于液晶菲涅耳波带透镜的OCT动态聚焦方法。

PLA in crystal chain zone arranged neat closely , more perfect , and to improve the crystallization mechanical properties and delay the degradation speed , half crystal sexual PLA crystallization rate slowly , limiting its application .

PLA在晶区中分子链排列规整紧密，结晶更完善，有利于改善力学性能和延缓降解速度，半晶性的PLA结晶速率很慢，限制了它的应用。

Growth of Organic Crystal Fiber by Zone Melting in Descended Ampoule

毛细管下降区域熔融法生长有机纤维单晶

Growth of ZnO Whiskers and TiO_2 Single Crystal with Floating Zone Method and Their Optic Spectra

ZnO晶须和TiO2单晶的浮区法生长及其光谱研究

Distribution of Solute in Solid Solution Crystals & ⅱ . Distribution of TlBr in KRS-5 Crystal Grown by Zone Melting

固溶体晶体中溶质的分布规律&Ⅱ.溴化铊在逐区溶化法生长KRS-5晶体中的分布

The results showed that the thermal expansion coefficients of PTFE composites in the crystal transformation temperature zone are about 3 to 5 times on their average values in the whole analyze zone .

结果表明，PTFE基复合材料在结晶转变区内的线膨胀系数可达到平均值的3~5倍。

The average thermal expansion coefficient of aramid enforced PTFE composite is less than that of pure PTFE material in the whole analyze zone while the rule was inverse in the crystal transformation temperature zone .

添加芳纶纤维后PTFE材料平均线膨胀系数减小，但结晶转变区内线膨胀系数却略有增大。

A simulation study of crystal formation in liquid zone during solidification

凝固过程液相区内晶体形成的模拟研究

Observation of Defects in Single Crystal YIG by Floating Zone Method

浮区法生长YIG单晶中缺陷的观测

Preparing Method of Super-alloy Single Crystal with Electron Beam Zone Melting Furnace

定域SOI区熔再结晶研究电子束区熔高温合金单晶的制备工艺

Mechanism of the formation of the defects during heat treatment in single silicon crystal grown by floating zone method under pure hydrogen

氢气氛区熔硅单晶热处理缺陷形成机理