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:
High-Speed Centrifugal Compaction Process (HCP) is a wet compacting method, inwhich powders are compacted under a huge centrifugal force. The HCP was well applied to smallalumina specimens, but the compact easily cracked when we applied the HCP to other materials. Inthe present study we clarify the mechanism that introduces such cracks. Firstly, we observed HCPalumina, dyeing with iron oxide powder or by the Immersion Liquid Technique, and found thatthere was a kind of flow pattern generated during the HCP. A simple simulation also revealed thatthe formation of such a flow pattern was related to the Colioli’s force in the centrifugal field, andtherefore was hard to suppress. Nonetheless, the actual introduction of inhomogeneity along theflow was largely affected by another factor. Die releasing oil was dragged in the flows and formedlow density regions along the flow
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.285.pdf
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