材料相变

PZT（Mn，W）和PZT（Mg，W）系统铁电陶瓷材料相变的热物性研究

Studies on phase transition of ferroelectric ceramics of PZT ( mn , w ) and PZT ( mg , m ) systems by thermophysical method

运用Heisenberg模型研究了纳米材料相变的尺度效应，建立了相变与颗粒尺度之间的定量关系。

He effect of grain size on the phase transformation of nano materials has been studied with Heisenberg model . The quantitative relation between grain size and phase transformation temperature has been built up .

目前，利用原位和时间分辨XAFS技术已分别可获得高压高温下材料相变的结构和性能信息，以及催化反应中活性金属的动态变化。

Now , the structural kinetics of the phase transition under the high pressure-temperature , and the active atoms in the catalyzed reaction can be obtained bu using in situ and time-resolved XAFS method .

蓄冷材料相变温度与相变潜热实验研究

Experimental Study on Phase Change Temperature and Latent Heat of PCM

颗粒尺度对纳米材料相变的影响

The Influence of Grain Size on Phase Transformation of Nano Materials

聚砜与热致液晶聚合物原位复合材料相变温度的研究

Transition temperatures of thermotropic liquid crystalline polymers and polysulfone in situ composites

函数记录仪在金属材料相变研究中的应用

The Application of Function-Minute-Meter in The Phase Change Study of Metallic Materials

石墨渗金属材料相变过程中的传热特性研究

Heat Transfer Characteristics of Graphite Metal Materials in Phase Transition

核壳材料相变焓为32J/g。

Phase change enthalpy of core - shell material was 32 J / g.

冲击诱发材料相变及本构模型

Impact - Induced Martensitic Transformation and Material Constitutive Equations

陶瓷材料相变增韧尺寸效应的力学分析

Analysis of size effect on transformation toughening in ceramics

高频感应加热电解槽铝合金高温储热材料相变储热机理研究

Study on the Mechanism of Latent Heat Storage in High-Temperature Phase Change Aluminum Alloy

球体内混合有机材料相变传热特性分析

Phase change performances of organic mixture in spheres

含氟三环液晶材料相变与分子构造相关性的机械旋转模型研究

Mechanical Rotational Model on Correlation Between Transition and Molecular Structure in Tri-ring Fluorinated Liquid Crystal

相变材料相变点温度热物性的测试及误差分析

Test Measurements and Error Analysis of Thermo-physical Properties of Phase-change Materials at a Phase-transition Point Temperature

通过对其储热过程中相变材料相变过程的分析，提出储热器设计的优化方案。

The optimized design of latent heat storage was brought forward on the analysis of the experiment results .

结果表明，该新型固态相变材料相变焓较大，具有很好的应用价值和发展前途。

The result shows that the new functional material prepared has great value in use and infinite prospect of development potential .

金属材料相变潜热将影响材料本身的组织转变，而组织转变过程又影响相变潜热的释放量，两者相互影响。

Latent heat could influence structural transformation of metallic materials , which could also impact the burst size of latent heat .

研究表明：磨削白层是材料相变的产物，磨削热为白层的形成提供能量基础。

It is found that ground white layer is a product of phase transformation , and grinding heat provides energy basis for white layer formation .

由于受到表面偏析场和有限尺寸效应的影响，薄膜有序无序相变比体材料相变要复杂。

Due to the combined effects of surface segregation and finite size confinement , the order-disorder phase transitions of the thin films are much more complicated than those of the bulk .

采用焓法，分析了蓄能相变材料相变区比热特性对其蓄换热性能的影响。

S : In this paper , by using enthalpy method , the effect of characteristics of the specific heat of phase change material in its phase change process is analyzed .

相变动力学描述的是相变过程中的特征量随时间或温度发生变化的关系，并广泛用于研究材料相变过程中的组织演化和工业材料成型参数的控制。

Phase transformation kinetics describing the variation of transformation features along with time or temperature has been widely adopted to investigate the microstructural evolution and the optimization of the actual process parameters .

本文在非线性弹性理论的框架下，引入应变梯度界面能和位移非均匀能，利用变分原理建立了材料相变的一维动力学模型。

Within the frame of nonlinear elasticity , the strain gradient dependent interfacial energy and displacement dependent inhomogeneity energy were considered . One dimensional dynamical model was then obtained by means of the variational principle .

分析结果表明：乙酰胺含量为21.5%的复合材料相变温度仅23.2℃，而蓄热能力可达116.7J/g，是纯乙酰胺的2.16倍。

Results show that : the composite that contain ( 21.5 % ) PCM by weight has a change temperature of 23.2 ℃ . The capacity of thermal energy storage can reach 116.7J / g , which were 2.16 times to acetamide .

磁性和非磁性杂质对高Tc超导材料结构相变的影响

The Effect of Impurities on the Structure phase Transition of the High-Tc Superconductors

PCT纳米材料结构相变的变温拉曼光谱研究

Study on Structure Phase Transition of PCT Nano-powder by Using Temperature-change Raman Spectroscopy

利用熔融插层法把癸酸、月桂酸与改性皂土复合，得到有机／无机复合储能材料，相变温度为26℃，相变焓为72.48J／g。

Capric acid and lauric acid have been inserted to bentonite layers using melting inserting method , and have been tested that the phase change temperature is 26 ℃ and the heat fusion is 72.48J/g .

采用经典XY模型，阐明了三角格子上层状超薄膜磁性材料的相变和临界现象。

Phase transitions and critical phenomena have been clarified for an XY model on the triangular lattice of ultra thin magnetic films .

结果表明，PEG/PAM相变材料的相变温度、相变焓不仅随着PEG分子量的减小而降低，而且随着PEG质量分数的减小而降低；

The results showed that the phase transition temperature and phase transition enthalpy of materials decreased with decreasing the molecular weight and the mass percent of PEG , respectively .

利用ANSYS软件对相变材料的相变过程进行模拟分析，并通过试验验证，ANSYS模拟结果和试验结果基本一致，均表明提高相变材料的热导率和潜热是延长相变材料模块恒温时间的主要途径。

Using ANSYS software to analyze phase change of PCMs , the results show that high latent heat and high heat conductivity is the main way to prolong the material constant temperature time .