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:
Porous materials are successfully utilized for fabrication of many industrialcomponents such as filters and selflubricating bearings. These products are made by powdermetallurgy, where mixtured or prealloyed powders can be used. The aluminum bronze is oneof the most wanted due its excellent properties in combination with low cost of the rawmaterials. In this work, single action compacted (100 MPa) prealloyed aluminum bronze (Cu-9wt%Al-1wt%Fe) cylinders were sintered using a hollow cathode discharge at temperaturesbetween 400 and 750°C with duration on the isotherm for 12 min. Microstructure changes,homogeneity, porosity and composition were analyzed after the treatment. Sintering below550° C led to uniform but porous structure. Above 550 °C it was observed a solidified centralregion and a porous structure that changes slightly through out the cross-section. The diameterof the central region increased with treatment temperature. It is concluded that due to theintense plasma heating and subsequent surface melt formation a mass flow direction to thecenter of compacts occurred
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.530-531.133.pdf
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