Investigation of the foaming process of metals by synchrotron radiation imaging
Investigation of the foaming process of metals by synchrotron radiation imaging
复制标题
同步辐射成像研究金属发泡过程
DOI：
--
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
T. Baumbach
中科院分区：
文献类型：
--
作者：
L. Helfen;H. Stanzick;J. Ohser;K. Schladitz;P. Rejmánková;J. Banhart;T. Baumbach
同步辐射成像是金属泡沫材料无损表征的有力工具。在投影图像序列中，通过实时射线照相就地可视化发泡过程。报道了泡沫膨胀的时间演化，从早期的孔隙形成到孔隙增长，直到泡沫结构的崩溃。将非原位微层析成像技术应用于泡沫初期的统计分布特性研究。各种图像处理和分析技术对孔隙成核及其早期形成、膜破裂和泡沫排水产生定量结果。金属发泡工艺在前驱体材料、加工步骤和工艺参数方面的异同是可以确定的。
Synchrotron-radiation imaging serves as a powerful tool for the non-destructive material characterization of metallic foams. The foaming process is visualized in situ by real-time radiography in projection image sequences. The temporal evolution of foam expansion from early pore formation over pore growth up to the collapse of the foam structure are reported. Ex situ microtomography is applied to the study of statistical distribution properties at the early foaming stages. Various image processing and analysis techniques yield quantitative results concerning pore nucleation and their early formation, film rupture and foam drainage. The similarities and differences of the metal foaming process with respect to the precursor material, its processing steps and process parameters are determinable.