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:
Recently to improve properties, highly microstructure controlled ceramics such asfine-grained, textured and laminated structures are required. We have demonstrated a newprocessing of textured ceramics with a feeble magnetic susceptibility by colloidal processing in ahigh magnetic field and subsequent heating. As colloidal processing, slip casting andelectrophoretic deposition (EPD) have been conducted successfully. Colloidal processing is knownto be a powerful method for consolidating fine particles with a high density and homogeneousmicrostructure. The degree of orientation strongly depends on the particle dispersion and someprocessing factors, such as particle size, applied magnetic field, concentration of the suspension,sintering temperature, etc. Crystalline-textured controlled laminated composites can be fabricatedusing EPD by varying the angle between the vectors of electric field and magnetic field. Alsotextured ceramics with complicated structure can be fabricated by reaction sintering. The colloidalprocessing in a high magnetic field confers several advantages and it is possible for this type ofprocessing to be applied to non-cubic ceramics, such as alumina, titania, zinc oxide, tin oxide,hydroxy apatite, aluminium nitride, silicon carbide, silicon nitride, etc. The textured ceramicsshowed anisotropic properties depending on the crystal plane
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.352.101.pdf
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