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高速高温计
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     The basic principles of the pulse heating technique and the review of the experiments apparatus along with the measurement performed during the last three decades are described briefly in this paper. The new dynamic measurement methods developed to extend the pulse heating technique to thermal expansion and thermal conductivity measurement using high speed scanning pyrometer are also showed.
     本文介绍了利用脉冲加热技术进行热物性测量的基本原理 ,简要介绍了最近三十年国内外利用此技术进行热物性测量的原理和装置 ,以及利用扫描高速高温计进行热膨胀系数和热传导系数测量的方法和实验装置。
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     High-speed Filtration Equipment
     高速过滤装置
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     High speed optical modulators
     高速光调制器
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     Acoustic Pyrometer
     声波高温计
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  high-speed pyrometry
Special attention is given to the problem of high-speed pyrometry with millisecond to nanosecond time resolution.
      
A current pulse of subsecond duration was imparted to a niobium strip and the initial part of the melting plateau was measured by high-speed pyrometry.
      
A subsecond pulse-heating technique was applied to rod specimens: radiance temperature was measured by high-speed pyrometry.
      
A subsecond pulse-heating technique was applied to rod specimens: radiance temperature was measured by high-speed pyrometry.
      
At the same time, the radiance temperature of the strip is measured by high-speed pyrometry from approximately 1000K to the melting point.
      
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The classical steady state technique for the measurement of thermophysical properties at high temperatures suffers from many limitations (for example, chemical reaction, evaporation, loss of mechanical strenght etc.). These problems may be overcome by transient techniques of sub second durations. The basic principles of the pulse heating technique and the review of the experiments apparatus along with the measurement performed during the last three decades are described briefly in this paper. The new dynamic...

The classical steady state technique for the measurement of thermophysical properties at high temperatures suffers from many limitations (for example, chemical reaction, evaporation, loss of mechanical strenght etc.). These problems may be overcome by transient techniques of sub second durations. The basic principles of the pulse heating technique and the review of the experiments apparatus along with the measurement performed during the last three decades are described briefly in this paper. The new dynamic measurement methods developed to extend the pulse heating technique to thermal expansion and thermal conductivity measurement using high speed scanning pyrometer are also showed. At last, the future directions in research on the pulse heating technique are presented.

使用脉冲加热技术测量热物性参数的瞬态量热法克服了利用经典稳态法进行测量的许多缺陷 ,因而取得了很大的发展。本文介绍了利用脉冲加热技术进行热物性测量的基本原理 ,简要介绍了最近三十年国内外利用此技术进行热物性测量的原理和装置 ,以及利用扫描高速高温计进行热膨胀系数和热传导系数测量的方法和实验装置。最后介绍了该领域国内外的最新研究动态和发展方向

The development of a millisecond pulse heating apparatus using a new pulse-heating reflectometric technique is described. The normal spectral emissivity of strip specimens was measured using this technique. The hemispherical spectral reflectivity of the surface of a strip tangent to an integrating sphere is determined by a high speed lock in technique. At the same time, the radiance temperature of the strip is measured by high speed pyrometry. The heat capacity, electrical resistivity, total hemispherical...

The development of a millisecond pulse heating apparatus using a new pulse-heating reflectometric technique is described. The normal spectral emissivity of strip specimens was measured using this technique. The hemispherical spectral reflectivity of the surface of a strip tangent to an integrating sphere is determined by a high speed lock in technique. At the same time, the radiance temperature of the strip is measured by high speed pyrometry. The heat capacity, electrical resistivity, total hemispherical emissivity and spectral emissivity of the specimen can be measured by using this apparatus for some materials.

介绍了利用积分球反射计的脉冲加热技术测量材料热物性的一种方法和测量装置的各组成部分及工作原理 .被测的带状试样被一脉冲大电流加热 ,利用高速高温计测量试样的辐射温度 ,同时利用积分球反射法获得试样的半球向光谱反射率 ,进而得到试样的法向光谱发射率、比热、电阻率和全波长半球发射率 .该装置具有试样制备简单、测试精度高等优点

The development of a millisecond pulse-heating apparatus using a new pulse - heating reflectometric technique is described. The normal spectral emissivity of strip specimens was measured using this technique. The hemispherical spectral reflectivity of the surface of a strip tangent to an integrating sphere is determined by a high-speed lock-in technique. At the same time, the radiance temperature of the strip is measured by high speed pyrometry. The heat capacity, electrical resistivity, total hemispherical...

The development of a millisecond pulse-heating apparatus using a new pulse - heating reflectometric technique is described. The normal spectral emissivity of strip specimens was measured using this technique. The hemispherical spectral reflectivity of the surface of a strip tangent to an integrating sphere is determined by a high-speed lock-in technique. At the same time, the radiance temperature of the strip is measured by high speed pyrometry. The heat capacity, electrical resistivity, total hemispherical emissivity and spectral emissivi- ty of the specimen can be measured by using this apparatus for some materials.

介绍了利用积分球反射计的脉冲加热技术测量材料热物性的一种方法和测量装置的各组成部分及工作原理。被测的带状试样被一脉冲大电流加热,利用高速高温计测量试样的辐射温度,同时利用积分球反射法获得试样的半球向光谱反射率,进而得到试样的法向光谱发射率、比热、电阻率和全波长半球发射率。该装置具有试样制备简单、测试精度高等优点。

 
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