On the relative importance of the different initial conditions that seed the electrothermal instability.

Autor:	Hutchinson, T. M., Awe, T. J., Bauer, B. S., Hutsel, B. T., Yager-Elorriaga, D. A., Yates, K. C., Klemmer, A. W., Hatch, M. W., Kreher, S. E., Yu, E. P., Gilmore, M.
Předmět:	CRYSTAL defects SURFACE topography METALLIC surfaces SURFACE defects SURFACE roughness
Zdroj:	Journal of Applied Physics; 10/21/2021, Vol. 130 Issue 15, p1-12, 12p
Abstrakt:	Electrothermal instability is responsible for degrading numerous applications of pulsed-power technology, yet the initial conditions from which it grows are not well understood. For the first time, metal surfaces have been tracked from characterization to self-emission. This reveals no clear correlation between non-uniform thermal emissions and surface metallurgical defects or crystallographic grains, while correlations are observed with surface topography for 5N metal but not 6061 metal. For 5N metal, surfaces with average roughness as small as 5 nm still admit thermal perturbations with δ T / T > 0.1. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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