探头接触电阻、热电电压和时间对四点探头测量超合金单晶钢电阻的影响

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Electrical Engineering & Technology Pub Date : 2024-08-26 DOI:10.1007/s42835-024-02012-5
Sang Hwa Lee, Kwang Min Yu, Jeon Hong Kang, Seung Hoon Nahm, Jae Yeong Park
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引用次数: 0

摘要

研究了探针接触电阻、热电动电压和时间依赖性对超耐热单晶钢电阻测量的影响,它们是使用四点探针(FPP)法测定样品导电率的重要误差因素。结果表明,即使接触电阻及其时间依赖性很大,对样品电阻测量结果的影响也很小。此外,研究还发现热电电压效应会导致百分之几的测量误差,要消除这种效应,必须对施加电流的两个极性产生的电压进行平均。此外,研究还发现,在最初的几分钟内,测量电压值变化很快,可能会造成百分之几的误差;要获得约 0.1% 的精度和不确定性,必须在电压稳定后再进行测量。结果表明,要使用 FPP 方法准确测定样品电阻,除了考虑文献中提到的电流、电压和几何校正因子等基本参数外,还必须考虑上述影响(Kang 等人,载于 J Electr Eng Technol 18:1419-1427, 2023)。
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Effect of Probe Contact Resistance, Thermoelectric Voltage and Time Dependence on Electrical Resistance Measurement of Superalloy Single-Crystal Steel by Four-Point Probe

The effects of probe contact resistance, thermoelectric voltage and time dependence on electrical resistance measurement of superalloy single-crystal steel were examined as important error factors in determining the electrical conductivity of the sample using the four-point probe (FPP) method. It was shown that even when the contact resistance and its time dependence are large, its effect on the sample resistance measurement results is insignificant. Additionally, it was found that the thermoelectric voltage effect can cause a measurement error of several percent, and to cancel this effect, the voltage due to both polarities of the applied current must be averaged. In addition, it was found that in the first few minutes, the measured voltage values change rapidly within the first few minutes and may cause an error of several percent; to obtain accuracy and an uncertainty of about 0.1%, the measurements must be performed after voltage stabilization. The results indicated that to determine sample resistance accurately using the FPP method, the effects examined above must be considered in addition to the basic parameters of current, voltage, and geometric correction factor mentioned in literature (Kang et al. in J Electr Eng Technol 18:1419–1427, 2023).

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来源期刊
Journal of Electrical Engineering & Technology
Journal of Electrical Engineering & Technology ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
4.00
自引率
15.80%
发文量
321
审稿时长
3.8 months
期刊介绍: ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies. The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.
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