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:
Fabrication of sintered compact from aluminum powder coated with tin deposits wasexamined, in order to enhance the bonding among the aluminum particles under the assistance of tinand thereby the sintering effect of the aluminum powder, aiming at improving the mechanicalproperties of sintered aluminum materials. For the coating of aluminum powder with tin deposits,the deposition of pure tin onto the aluminum particles was carried out by magnetron DC sputteringduring the self-convective motion of the aluminum powder in a vacuum chamber. The tabletconsisting of the aluminum powder coated with tin deposits was sintered at 650℃ in a vacuumchamber for 2 hours, while the tablet consisting of non-coated aluminum powder was also sinteredunder the same condition for comparison. The sintered compact from the coated aluminum powderwas solid and uniform, and its consolidation reached over 95% while that from non-coatedaluminum powder was around 85%. According to tensile tests, the tensile strength of the sinteredcompact from the coated aluminum powder was 75.4N/mm2 while that from non-coated aluminumpowder was 71.0N/mm2, and the elongation of the sintered compact from the coated aluminumpowder reached over 20% while that from non-coated aluminum powder was around 10%.Therefore it was found that the consolidation and the mechanical properties of the sintered compactconsisting of aluminum powder were considerably improved by this powder coating process
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.530-531.353.pdf
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