A Closed Contactless Method for Investigation of Thermophysical Properties of Metals and Alloys in the Temperature Range of 1000–2500 K

IF 0.4 4区工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY Instruments and Experimental Techniques Pub Date : 2023-12-04 DOI:10.1134/S002044122304005X

A. V. Rumyantsev, I. N. Pyatykh

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Abstract

A closed noncontact method of converging radial temperature waves generated by high-frequency induction modulated heating of a cylindrical sample, which is intended to study the thermophysical properties of metals and alloys at high temperatures, and an experimental setup for its implementation based on modern equipment are described. According to the experiment, the thermophysical parameters are determined with the following errors: 2% for the thermal diffusivity, 3% for the heat capacity, 5% for the thermal conductivity, 1.4% for the electrical resistivity, and 2% for the power. The following quantities were then calculated: the density, coefficient of volumetric thermal expansion, electron and lattice thermal conductivities, volumetric heat capacity, heat absorption coefficient, monochromatic and integral degrees of blackness, enthalpy, entropy, and Gibbs energy. When studying a substitution alloy and an interstitial alloy, the advantages of the closed method are shown on a specific example.

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研究 1000-2500 K 温度范围内金属和合金热物理性质的封闭式非接触方法

本文介绍了一种通过对圆柱形样品进行高频感应调制加热而产生的径向温度波进行会聚的封闭式非接触方法，该方法旨在研究金属和合金在高温下的热物理性质。根据实验，热物理参数的测定误差如下：热扩散率 2%，热容量 3%，热导率 5%，电阻率 1.4%，功率 2%。然后计算出以下数量：密度、体积热膨胀系数、电子和晶格热导率、体积热容、吸热系数、单色黑度和积分黑度、焓、熵和吉布斯能。在研究置换合金和间隙合金时，通过一个具体实例展示了封闭方法的优势。

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来源期刊

Instruments and Experimental Techniques 工程技术-工程：综合

CiteScore

1.20

自引率

33.30%

发文量

113

审稿时长

4-8 weeks

期刊介绍： Instruments and Experimental Techniques is an international peer reviewed journal that publishes reviews describing advanced methods for physical measurements and techniques and original articles that present techniques for physical measurements, principles of operation, design, methods of application, and analysis of the operation of physical instruments used in all fields of experimental physics and when conducting measurements using physical methods and instruments in astronomy, natural sciences, chemistry, biology, medicine, and ecology.