均相成核

此外，还发现硅锌矿的均相成核速率和晶体生长速度均与ZnO含量成正比。

In addition , it is also found that the homogeneous nucleation rate and the crystal growth speed are directly proportional to ZnO content .

而当PP为分散相时，固态的PET在一定程度上阻碍了PP分子链的运动，促使PP结晶均相成核趋势增加。

But when PP is in disperse phase , the solid PET impedes the motion of PP molecular chain to a certain extent , adding in the increasing tenency of homogeneous nucleation of PP crystal .

非均相成核法制备ATO纳米粉末及其性能

Preparation and Characterization of Nanometer ATO Powder by Heterogeneous Precipitation

采用非均相成核法制备了ATO纳米导电粉末，研究了晶种浓度、反应温度、分散剂对粉末粒径、电阻率等性能的影响；

Effects of crystal-seed concentration , reaction temperature , and dispersants on powder size and resistivity have been investigated .

采用非均相成核法，在Sn（OH）4晶种上均匀生长Sb掺杂Sn（OH）4，制备纳米ATO粉末。

ATO nanoparticles were prepared from Sn ( OH ) 4 nucleus grew uniformly with Sn ( OH ) 4 and Sb ( OH ) 3 by heterogeneous precipitation .

将描述均相成核的经典成核理论应用于第3亚稳区的计算，得到了用其它方法很难得到的固液界面张力σ、临界核半径r及临界核所含溶质分子数i。

In addition , the solid - liquid interfacial tension σ, the radius of critical nucleus r and the number of molecules in a critical nucleus I are obtained by processing the experiment data with classical homogeneous nucleation theory .

用电炉和高温热台显微镜测定了釉熔体中硅锌矿的均相成核曲线和晶体生长曲线，并且用高温X射线衍射仪直接测定釉中硅锌矿的等温结晶曲线。

By means of electric furnace and high temperature thermo-stage microscope , the homogeneous nucleation curve and the crystal growth curve of willemite are determined . Using high temperature X-ray diffraction techniques the willemite isothermal crystallization curves are obtained .

PP-A系列的n值在2.18～3.04之间，为异相成核与均相成核机理；

The Avrami index ( n ) of PP-A value was Between from 2.18 to 3.04 , which is in phase and out of phase nucleating mechanism ;

s>4.5时，SBC成核是以均相成核为主，成Ⅰ摘要核级数为1.48。

When s < 4.5 , the SBC nucleation was mainly heterogeneous and the order was 4.49 , while s > 4.5 , the SBC nucleation was mainly homogeneous , and the order was 1.48 .

在室温处理1440h，溶液浇注膜样品按均相成核结晶机理，形成负球晶形态。

The homogeneous nucleation happened and negative spherulites were observed in the films crystallization at room temperature for 1440h .

用均相成核理论分析了超临界CO2快速膨胀法（RESS）制备灰黄霉素微细颗粒过程中的预膨胀操作。

The pre expansion operation of rapid expansion of supercritical solution ( RESS ) is investigated by classical homogeneous nucleation theory in this article . Griseofulvin will not deposit from the supercritical CO 2 even though the supersaturation increases with the increasing pre expansion temperature .

对于PP-g-PVOH，随醇解率增加，PP的结晶模式由均相成核向异相成核转化，结晶温度显著上升，结晶热焓增加，但由于分子链的规整性降低，导致结晶速率常数降低。

For PP-g-PVOH , the crystallization behavior was changed from homo to hetero nucleation with SP increased , the best crystallization temperature and enthalpy was increased dramatically , but the crystallization rate was decreased because the integrity of molecular chain was decreased .

结果表明：4VP/BA的无皂乳液聚合遵循均相成核机理。

The results indicate that the soapless emulsion polymerization of 4VP / BA followed homogeneous nucleation mechanism .

文章提出的成核与长大竞争机制能有效地解释非均相成核等的成核过程。

Furthermore , a new competition conception between nucleation and cell growth can be used to explain the heterogeneous nucleation and the final microcellular constructure .

Na~+和K~+对过饱和铝酸盐溶液均相成核过程的影响

The Influence of Na ~ + and K ~ + on the Homogeneous Nucleation of Al ( OH ) _3 Crystal from Supersaturated Caustic Aluminate Solution

溶剂热条件下无皂乳液聚合机理遵循胶束成核和均相成核，但温度改变时自生压力影响胶粒的成核过程。

The polymerization with solvothermal method are in accordance with mechanism of homogeneous nucleation and micelle nucleation , but different pressure for different temperature posed influence on the nucleation of nanoparticles .

由晶体成核理论中均相成核和非均相成核的理论模型分析了镁铝水滑石在不同条件下成核与生长以及表面活性剂在晶体成核过程中所起的作用。

It is analyzed that the nucleation and growth of Mg , Al-hydrotalcite under different conditions by crystal nucleation theory and the role of surfactants in the process of crystal nucleation .

通过分析非均相成核与均相成核的临界成核半径、临界晶核形成功、成核速率等，说明降低溶液稳定性的主要因素是非均相成核。

The research of Gibbs free energy , critical nucleus radius , nucleation rate of homogeneous nucleation ' and heterogeneous nucleation shows that the main reason decreasing solution stability is heterogeneous nucleation .

对恒定热流下具有温度梯度的非均相成核，沸腾起始的临界半径随着接触角的增加（更疏水表面）而减小，即导致成核更容易发生。

For heterogeneous nucleation with temperature gradient under steady heat flux , it is found that the critical radius decreases with increasing contact angle ( more hydrophobic surface ), making the nucleation easier .

但均相成核导致的平均粒径的降低比普通搅拌釜中的严重，说明泰勒涡流流场对于两相的传质有强化作用。

But the decrease of particle size caused by homogeneous nucleation in Taylor reactor was more than that in stirring tank . This also implies the intensification of mass transfer between two phases in Taylor vortex .

在考虑胶束成核和均相成核的基础上、建立了成核模型，结合建立的种子乳液共聚合模型对实验结果进行了模拟。

Based on the consideration of micell and homogeneous nucleation , nucleation model was developed . The modeling of the experimental results for unseeded emulsion copolymerization was shown by combining the nucleation model with seeded emulsion copolymerization that .

结晶一段时间后，球晶密度改变不大，而泡孔密度仍然进一步增加，泡孔密度甚至大于球晶密度，这是由于出现了异相成核和均相成核共同成核模式造成的。

After a period of crystallization , the spherulites density almost keeps constant while cell density still increases and even higher than spherulites density at last . This is because there is homogeneous and heterogeneous nucleation at the same time .

文章阐述了泡核形成的均相成核、固液界面诱导的非均相成核以及空穴成核的机理和模型。

Nucleation and the bubble growth controlling be of key importance in the foaming processing , in this paper , the nucleation mechanism and nucleation model ( including homogeneous nucleation , solid liquid and microcavities induced heterogeneous nucleation ) is presented .

液相法是在均相溶液中，利用各种途径引发化学反应，通过均相或异相成核及随后的扩散生长而制备出粒径分布窄且表面功能化的纳米尺度材料。

Solution-phase synthesis can synthesize nanometer-sized materials with narrow size distributions and functional surfaces , enabling both the formation of order arrays and the controlled tethering of nanometer-sized materials to solid substrates by chemical reaction in homogeneous solution which leads to homogeneous or heterogeneous nucleation and diffusion growth .