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:
Yttria and iron co-doped tetragonal zirconia polycrystals ((Y, Fe)-TZPs) were investigatedto evaluate the feasibility for the ceramic bracket application. Presintered the (Y,Fe)-TZPs bracketswere machined, abraded and coated with granule spray containing 10~50 wt% of flux. Finally, thebase-coated brackets were sintered. Roughness of the coated surface was decreased to 13 um and 10um when the flux content was 30 wt% and 50 wt%, respectively. It may be due to the fusion and thecollapse of the granules as a result of the high amount of flux. Better adhesion to the base surface ofthe brackets and irregular shape were observed by raising the amount of flux in the slurries. Wettingangle of ethylene glycol droplet on the (Y,Fe)-TZP bare surface was determined to be 41.85°,however, the angle became 0° after the granule spraying treatments. The (Y,Fe)-TZP bracketsexhibited uniform embossed base and good wetting. The newly developed base-coated bracket couldbe highly applicable to enhance retention and to reduce adhesive resin remnant during the bracketdebonding
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.1421.pdf
Permalink