The experimental apparatus for electrical resistivity measurements of liquid metals and alloys under microgravity due to the launch of a rocket
The experimental apparatus for electrical resistivity measurements of liquid metals and alloys under microgravity due to the launch of a rocket
复制标题
火箭发射微重力下液态金属和合金电阻率测量实验装置
DOI：
10.1063/1.1146940
复制
发表时间：
1996
影响因子：
1.6
通讯作者：
K. Kawasaki
中科院分区：
文献类型：
--
作者：
T. Masaki;T. Itami;K. Kuribayashi;M. Hinada;K. Kawasaki
研制了用于火箭发射微重力条件下测量液态金属及合金电阻率的实验装置，整个装置由电池盒、电子电路盒和电池盒组成，空间小，长360 mm×宽360 mm×高97 mm。直流四探针法用于测量电阻率的电池是由钛金属制成的，因为它的强度高，在高温下不会与腐蚀性液态合金反应。将该方法成功地应用于重力条件下和火箭发射后微重力条件下临界混合的液态铋镓合金的电阻率测量。在临界点附近观察到较大的电阻率温度系数。这可能表明在微重力条件下出现了更大的浓度波动。
The experimental apparatus was developed for electrical resistivity measurements of liquid metals and alloys under microgravity due to the launch of rocket; whole assembly, contained in the small space of 360 mm(length)×360 mm(width)×97 mm(height), was composed of the cell box, the electronic circuit box, and the battery box. The cell for electrical resistivity measurements due to the dc four probe method was made of Ti metal because of its strength and no reaction to corrosive liquid alloys at high temperatures. The application of this method was made successfully to the measurement of electrical resistivity for liquid Bi–Ga alloys with critical mixing both under gravity condition and under microgravity condition due to the launch of the rocket. The far larger temperature coefficients of resistivity were observed near the critical point. This may indicate the appearance of larger concentration fluctuations under microgravity.