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:
Partially sintered zirconia ceramics (PSZCs) for dental uses were prepared from zirconia nanopowdervia isostatic pressing and partially sintering. The open porosities, pore diameters, grain sizes andmechanical properties of the ceramics with different densities were studied. The results show that thepores formed in the PSZCs are all open pores, with a diameter distribution of 60nm~130nm and a grainsize distribution of 120~170nm. The machinability becomes worse when the density of PSZC is higherthan 75% of the theoretical density, so a ceramic named PSZC-70% with density of 70%TD was selectedas the target material. Its bending strength is 168 MPa and fracture toughness is 1.8 MPa·m1/2. A dentalrestoration framework can be obtained via machining the PSZC-70% on a dental CAD/CAM system
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1252.pdf
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