Synchrotron-based radioscopy employing spatio-temporal micro-resolution for studying fast phenomena in liquid metal foams

被引：47

作者：

Rack, A. ^{[1
,2
]}

Garcia-Moreno, F. ^{[3
,4
]}

Baumbach, T. ^{[2
]}

Banhart, J. ^{[3
,4
]}

机构：

[1] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[2] Forschungszentrum Karlsruhe ANKA, D-76021 Karlsruhe, Germany

[3] Tech Univ Berlin, D-10623 Berlin, Germany

[4] Helmholtz Ctr Berlin, Hahn Meitner Inst, D-14109 Berlin, Germany

来源：

JOURNAL OF SYNCHROTRON RADIATION | 2009年 / 16卷

关键词：

X-ray radioscopy; metal foams; coalescence; CMOS; micro-radiography; liquid films; metallic thin films; viscosity; fracture; aluminium alloys; bubbles; X-RAY; ALUMINUM;

D O I：

10.1107/S0909049509001939

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Investigations of pore coalescence and individual cell wall collapse in an expanding liquid metal foam by means of X-ray radioscopy with spatio-temporal micro-resolution are reported. By using white synchrotron radiation for imaging, the rupture of a film and the subsequent merger of two neighbouring bubbles could be recorded with a time sampling rate of 40000 frames s(-1) (25 mu s exposure time) and a spatial sampling rate of 20 mm. The rupture time of a cell wall was found to be in the range of 300 ms. This value is in agreement with theoretical considerations which assume an inertia-dominated rupture time of cell walls in liquid metal foams.

引用

页码：432 / 434

页数：3

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