ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The decrease of the distance between particle centers due to the growth of the sinternecks can be explained by the well known two-particle model. Unfortunately this model fails toprovide a comprehensive description of the processes for 3D specimens. Furthermore, there is asignificant discrepancy between the calculated and the measured shrinkage because particlerearrangements are not considered. Only the recently developed analysis of the particle movementsinside of 3D specimens using micro focus computed tomography (μCT), combined withphotogrammetric image analysis, can deliver the necessary experimental data to improve existingsintering theories. In this work, μCT analysis was applied to spherical copper powders. Based onphotogrammetric image analysis, it is possible to determine the positions of all particle centers fortracking the particles over the entire sintering process and to follow the formation and breaking ofthe particle bonds. In this paper, we present an in-depth analysis of the obtained data. In the future,high resolution synchrotron radiation tomography will be utilized to obtain in-situ data and imagesof higher resolution
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.493.pdf
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