ISSN:
1013-9826
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
The friction and wear behavior of dental ceramics (Vita VMK95) against uniform Si3N4balls has been investigated using a small amplitude reciprocating apparatus under simulated oralconditions. The variables of ball radii (2mm, 6 mm, 13mm, and 21mm), load (10N, 20N, 30N, and40N), reciprocating amplitude (200(m), frequency (2Hz) and use of artificial saliva lubrication or nolubrication were selected. Tests lasting up to 10,000 cycles were conducted. The wear scars of thesamples were characterized with 3-D con focused laser-scanning microscope. The wear depths wereanalyzed statistically. The correlations between the wear behaviors and antagonist radii were alsocompared. The results show the friction coefficient of dental porcelain goes up with the decreasing ofantagonist radii, and the wear depth decreases with the antagonist diameters. Load and lubricationeffect is significant for friction coefficient and wear depth. The friction and wear mechanism of dentalceramics was characterized by abrasive wear and delaminating
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.1255.pdf
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