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首页> 外文期刊>ISIJ international >Electrical-resistivity Measurements of Liquid Fe–C Alloys Using the Four-terminal Method
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Electrical-resistivity Measurements of Liquid Fe–C Alloys Using the Four-terminal Method

机译：使用四端子法测量液态Fe–C合金的电阻率

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Electrical-resistivity measurements of liquid Fe–C alloys were attempted using a new probe developed on the basis of the four-terminal method. The four graphite electrodes (except their ends) were covered with alumina tubing and were combined together with an outer alumina tube such that the sample diameter was determined by the outer tubing. The as-prepared probe was dipped into the liquid samples for measuring their resistivity. With the aim to confirm the reliability of the technique, the probes were firstly used to measure the electrical resistivity of liquid Ga and Sn samples. Subsequently, electrical-resistivity measurements were conducted for Fe-4.31mass%C and Fe-4.57%C samples at ca. 1585 K; these measurements yielded values of 1.48×10~(?6) and 1.58×10~(?6) Ω·m, respectively. A comparison with the reported data suggests that the electrical resistivity of liquid iron progressively increased with the carbon concentration up to 3 mass%, beyond which it showed a drastic increase. This resistivity change might have occured because of the structure of the liquid Fe–C alloy.
机译：尝试使用一种基于四端子法开发的新型探针来测量液态Fe–C合金的电阻率。四个石墨电极（末端除外）用氧化铝管覆盖，并与外部氧化铝管组合在一起，以使样品直径由外部管确定。将准备好的探针浸入液体样品中以测量其电阻率。为了确认该技术的可靠性，首先将探针用于测量液态Ga和Sn样品的电阻率。随后，在ca处对Fe-4.31质量％C和Fe-4.57％C样品进行了电阻率测量。 1585千;这些测量结果分别为1.48×10〜（？6）和1.58×10〜（？6）Ω·m。与报道的数据进行比较表明，随着碳浓度达到3质量％，铁水的电阻率逐渐增加，超过此范围则急剧增加。电阻率的变化可能是由于液态Fe–C合金的结构而发生的。

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