Tribological properties of a mica glass-ceramic designed for use in dental
applications were assessed experimentally in accord with the ASTM pin on disk technique. The glass ceramic was produced through controlled
crystallization of the glass in the system SiO2, Al2O3, CaO, MgO, K2O, and F.
Crystallization was accomplished by subjecting the parent glass to a regulated
heat treatment that resulted in the nucleation and growth of crystal phases
formed in the glass.
The tests were conducted by sliding a zirconia ball against the glass and glass
ceramic disk. The friction coefficient and wear rate were determined as
functions of the applied load, sliding speed and sliding time in ambient
laboratory conditions and in acidic and basic solutions. The friction coefficient
was monitored during the tests. The wear volumes determined from surface
profile traces obtained on the wear tracks after completion of the tests were
used for calculation of the wear rates. The wear rates increased with increasing
applied load and sliding speed but decreased with increasing sliding distance.
Results were correlated with the tribological properties of the parent glass, and tribological properties of selected glasses, glass-ceramics and ceramics reported in the literature.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/4/1060920/index.pdf |
| Date | 01 January 2003 |
| Creators | Kucuk, Taylan |
| Contributors | Ozturk, Abdullah |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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