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:
When an alloy such as Ni-W is liquid phase sintered, heavy solid W particlessedimentate to the bottom of the container, provided that their volume fraction is less than a criticalvalue. The sintering process evolves typically in two stages, diffusion-driven macrosegregationsedimentation followed by true sedimentation. During sedimentation, the overall solid volumefraction decreases concurrently with elimination of liquid concentration gradient. However, in thesecond stage of true sedimentation, the average solid volume fraction in the mushy zone increaseswith time, and oddly, no concentration gradient is necessary in the liquid zone. In this work, wepropose that the true sedimentation results from particle rearrangement for higher packingefficiency
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.609.pdf
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