LXI. The expansion of metals at high temperatures
LXI. The expansion of metals at high temperatures
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六十一。
DOI：
10.1080/14786443009461615
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发表时间：
1930
期刊：
影响因子：
--
通讯作者：
Fdk. L. Uffelmann B.Sc.
中科院分区：
文献类型：
--
作者：
Fdk. L. Uffelmann B.Sc.
本文介绍了一种可在800° C温度下对同一试样进行三个垂直方向测量的光干涉法。连续温度变化的使用是通过一个装置来平衡铂电阻温度计和样品的温度滞后。在样品的加热和冷却过程中进行观察。锡，镉，锌，铅，铝，铜，黄铜，钴，镍和钢的结果，并在可能的情况下，二次和蒂森的关系拟合。锡、镉和锌显示出明显的各向异性;而钴、镍和钢在加热时的膨胀系数曲线与冷却时的膨胀系数曲线不同，钴在450° C时显示出尖锐的峰值。在加热和330° C下。在冷却。
Abstract An optical interference method, for measurements in three perpendicular directions on the same specimen, and for use up to 800° C, is described. The use of continuous temperature variation is made possible by a device for equalizing the temperature-lag of the platinum resistance thermometer and the specimen. Observations were taken during both heating and cooling of the specimen. Results are given for tin, cadmium, zinc, lead, aluminium, copper, brass, cobalt, nickel, and steel, and, where possible, the quadratic and Thiesen's relations are fitted. Tin, cadmium, and zinc show pronounced anisotropic properties; while for cobalt, nickel, and steel the coefficient of expansion curve during heating is different from that during cooling, cobalt showing a sharp peak at 450° C. on heating and at 330° C. on cooling.