热扩散率

短切纤维和2D碳布叠层结构的摩阻材料平行方向的热扩散率为垂直方向的两倍；

Axial Thermal diffusivity of short fiber and2D fabric is twice as large as longitude thermal diffusivity .

PTR方法对材料热扩散率和热导率的研究

Study on the Thermal Diffusivity and Thermal Conductivity by PTR Method

Cu+在ZnS中具有很高的热扩散率，500℃时热扩散系数已达10-9cm2/s，是各种杂质中热扩散最强的杂质。

Cu + possesses a strong thermo-diffusion with diffusivity of about 10-9 cm2 / s in ZnS .

热导率的变化与热扩散率的变化有相似的规律；材料的热膨胀系数随温度的升高单调递增，温度上升相同情况下，材料的热膨胀系数随Ni含量的增加而增加。

Thermal expansion coefficient of TiC-Ni cermets increased monotonously with temperature increasing , and also increased with Ni content when the cermets were heated to the same temperature .

不透明材料热扩散率PTR测量方法的研究

Study on Measurement of Thermal Diffusivity of Opaque Material by PTR Method

液态合金有效热扩散率DFP反算方法

DFP Inverse Method of Effective Thermal Diffusivity of Liquid Alloy

利用Mirage效应确定非均匀材料厚度方向的热扩散率分布

Determination of thermal diffusivity distribution along the thickness of an inhomogeneous material by Mirage effect

CuCr触头合金热扩散率的实验研究

Experimental study of thermal diffusivity for CuCr contact alloys

同时，我们利用MPR径向扫描法测量了块状样品的热扩散率，得到了较好的实验结果。

Moreover , the sample 's thermal diffusivity is measured by MPR radial scanning methods . Experimental results are satisfactory .

计算机解PARKER数学模型在激光热导仪测定热扩散率研究中的应用

Application of computer solutions of parker 's mathematical model to analytical investigation of laser pulse conductivity apparatus for determining thermal diffusivity

非均匀等离子体由激光诱发的后向Raman散射利用Mirage效应确定非均匀材料厚度方向的热扩散率分布

BACKWARD RAMAN SCATTERING EXCITED BY LASER LIGHT IN AN INHOMOGENEOUS PLASMA Determination of thermal diffusivity distribution along the thickness of an inhomogeneous material by Mirage effect

结果表明频域PTR技术可以较准确的测量金属膜材料的热扩散率。

The results show that the frequency-domain PTR method could accurately measure the diffusivity of metal film material . 3 .

多晶硅薄膜被广泛地应用于MEMS和集成电路系统中，多晶硅薄膜的热扩散率与器件的动态特性有紧密联系。

And Polysilicon thin films are widely used in MEMS devices and ICs , which are important constituents of such micromechanical elements . The diffusivity of it has close relationship with the dynamic response of thermal CMOS devices .

为了测量纳米材料的热扩散率，采用激光光热位移技术测量了不同频率下热位移的相位，由相位的拟合曲线得到材料热扩散率的方法，得到了不同退火温度下纳米TiO2热扩散率。

A method for measuring diffusivity of nanometer material by means of laser photothermal displacement technique is presented , which measures the phase of thermal displacement in different frequencies and gives the diffusivity of material by fitted curves of phase .

本文对Si-Mo、Cr-Mo耐热铸铁的导热率和热扩散率及其影响因素作了测试和分析。

In this paper , the thermal conductivity , thermal diffusivity and effecting factors of Si-Mo , Cr-Mo heat resisting cast iron were measured and analysed .

当样品的前表面被一束脉冲激光照射时，可从样品后表面的温升历程得到热扩散率，此即Parker的方法。

When the front surface of the specimen is radiated by a laser pulse , the thermal diffusivity a can be obtained by the temperature rising history of the rear surface of specimen ( i.e. Parker 's method ) .

理论分析表明，在利用MPR频响法测量材料热扩散率时，该方法无需测量泵浦和探测光斑半径的大小，可有效地避免泵浦和探测光斑半径的测量误差对热扩散率测量的不利影响。

It was showed that the method didn ′ t need to directly determine sizes of pump and probe beams , which effectively avoid the influence of the error resulted from determining the beam sizes on the thermal diffusivity measurement .

结果表明：竹材的热扩散率α与竹材生长的方向和高度的关系不大；导热系数λ、热扩散率α、比热均Cp在温度为70℃左右时具有最大值。

The result shows that the thermal diffusivity α of bamboo has little to do with its height and direction and that the heat conductivity λ, the thermal diffusivity α and the specific heat C _p are all getting their maximum values at the temperature of 70 ℃ .

实验结果表明该结构的热扩散率比SiO2体材料的要小，并且随着SiO2层厚度的减小，热扩散率也减小。熔融织构（MTG）的YBa2Cu3O（7-δ）块材的交流磁化率研究

The results show that the thermal diffusivity of the thin film was smaller than its corresponding bulk material , and with the decreasing of the film thickness , the thermal diffusivity also decreasing . AC Susceptibility on YBa_2Cu_3O ( 7 - δ) Bulk Material by Melt-textured Growth Method

采用数值计算和DFP优化技术，通过对待测液态合金有效热扩散率的优化计算使铸件凝固温度场计算结果与实测温度场趋于一致，最终获得该合金液的有效热扩散率随温度变化的规律。

By the self-regulating and optimized computing the effective thermal diffusivity using numerical simulation and DFP optimization method , the simulation result of solidification temperature field is made accordant with the measured temperature , thereby the formulae expressing the effective thermal diffusivity being changed with the temperature are finally obtained .

激光光热散射技术测量不透明材料的热扩散率

Laser Photothermal Scattering Technique to Measure Thermal Diffusivity of Opaque Materials

激光脉冲法测量硬硅钙石绝热材料热扩散率

Thermal diffusivity measurements on xonotlite insulation materials by the laser-flash method

应用激光闪光法测定半导体融体的热扩散率

Thermal diffusivity measurements of semiconductor melts by laser flash method

测量了钢和石墨的热扩散率。

The thermal diffusivity of steel and graphite is measured .

周期热流法测量复合膜热扩散率的分析

Analysis of thermal diffusivity measurements of composite films by periodic heating method

激光脉冲法研究半透明PI/SiO2薄膜的热扩散率

Thermal Diffusivity Research of PI / SiO_2 Films by Laser Flash Method

激光脉冲法测量半透明材料的热扩散率

Measuring thermal diffusivity of semi-transparent materials by laser flash method

利用激光光热技术研究材料应力对热扩散率的影响

Influence of Stress on Thermal Diffusivity by Laser Photothermal Technique

关于利用激光光束偏转法测量热扩散率的研究

Measuring thermal diffusivity of solid materials by laser optical beam deflection method

石墨化率不同的自焙炭块的热扩散率

Thermal diffusivity of self - baking carbon block with different graphitization degrees