Metals during rapid heating by dense currents
Metals during rapid heating by dense currents
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DOI：
10.1070/pu1984v027n10abeh004128
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发表时间：
1984-10
期刊：
影响因子：
2.7
通讯作者：
S. Lebedev;A. I. Savvatimskii
中科院分区：
文献类型：
--
作者：
S. Lebedev;A. I. Savvatimskii
报道了高密度电流(高达~107A/cm2)脉冲加热过程中金属，特别是难熔金属的研究。特别是研究了金属在液态的比热和热膨胀、液态的电阻率随自由和受限膨胀产生压力至4·104atm时所提供的能量的变化、可见光发射、热渗出、熔化时某些性质的变化、电爆炸时金属的分散以及由于焦耳加热速率高而引起的固态金属的比热和电子发射的反常。所报道的液态金属(Al、Cu、Mo、W)在高温高压(数万巴)下的实验数据对液态金属理论具有相当大的兴趣。
Research on metals, particularly refractory metals, during pulsed heating by high density currents (up to ~ 107 A/cm2) is reported. In particular, studies have been made of the specific heat and thermal expansion of metals in the liquid state, the resistivity in the liquid state as a function of the amount of energy supplied during free and confined expansion generating pressures up to 4·104 atm, the visible emission, the heat effusion, the changes in certain properties upon melting, the dispersal of a metal during an electrical explosion, and the anomalies of the specific heat and electron emission of a metal in the solid state which stem from the high rate of Joule heating. The experimental data reported on liquid metals (Al, Cu, Mo, W) at high temperatures and high pressures (tens of kilobars) are of considerable interest for the theory of liquid metals.