ISSN:
1013-9826
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:
A novel technique to synthesize mullite by the oxidation of Al-Si alloy powder was used for themanufacture of mullite via pressure molding. The mixed powder was consisted of powders of Al-Si alloy,Al2O3 and SiO2 and additives or powders of Al-Si alloy, Al2O3, SiO2 and ZrO2 and additives. Those mixedpowders were milled in nonaqueous slurry in order to prevent the oxidation of Al-Si alloy. Then the greenbodies were pressureless sintered in air at ≥1380 °C. The Oxidation caused an internal volume expansion,resulting in reducing shrinkage stresses during reaction- bonding of composites, which minimized thesensitivity to crack formation. Comparing with non zirconia reinforced mullite composites, the effect ofthe microstructure and mechanical properties of mullite composites were studied
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.815.pdf
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