Volume magnetic susceptibility of gold–platinum alloys: possible materials to make mass standards for the watt balance experiment
Volume magnetic susceptibility of gold–platinum alloys: possible materials to make mass standards for the watt balance experiment
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DOI：
10.1088/0026-1394/40/4/305
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发表时间：
2003-06
期刊：
影响因子：
2.4
通讯作者：
Z. Silvestri;R. Davis;G. Genevès;A. Gosset;T. Madec;P. Pinot;P. Richard
中科院分区：
文献类型：
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作者：
Z. Silvestri;R. Davis;G. Genevès;A. Gosset;T. Madec;P. Pinot;P. Richard
2000年，法国国家化学计量学研究所（BNM）决定开发一种新的瓦特平衡实验。在众多的设计研究中，传递质量的选择尤为重要。由于接近一个高磁场强度的源，这个质量必须具有尽可能弱的磁化率。金-铂合金似乎满足这一要求，以及对密度和硬度值的额外要求，使其成为实现质量标准的可能候选者。研究了五种不同的金-铂合金，其中两种的体积磁化率在−2.8×10−5 ~−2.1×10−5之间，另外三种的体积磁化率在+1.1×10−5 ~ +8.8×10−5之间。
In 2000, the Bureau National de Métrologie (BNM, France) decided to develop a new watt balance experiment. Among numerous design studies, the choice of the transfer mass is particularly important. Because of the proximity to a source of high magnetic intensity, this mass must have a magnetic susceptibility as weak as possible. Gold–platinum alloy seems to meet this requirement, as well as additional requirements for density and hardness values, making it a possible candidate for mass standard realization. Five different gold–platinum alloys were studied, their volume magnetic susceptibility ranging from −2.8×10−5 to −2.1×10−5 for two of them and from +1.1×10−5 to +8.8×10−5 for the other three.