| 용융침투법으로 제조한 알루미나-유리 복합체의 내마모 특성 |
| 이세종 |
| 경성대학교 재료공학과 |
| Wear Behavior of Alumina-glass Composites Prepared by Melt Infiltration |
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| ABSTRACT |
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Wear and friction properties of the alumina-glass dental ceramics were evaluated in exact in vitro environment (artificial saliva at 37$^{circ}C$), using a ball-on-disc apparatus, at contact loads from 49 N to 196 N and with the disc rotating at 120 rpm up to 10$^{6}$ cycles to investigate the wear behavior. As the load increased from 49 N to 196 N, the friction coefficient of 0.025 was maintained, however, the volumetric wear rate rose from 2.18 ${times}$10$^{-9}$TEX>$mm^{3}$/Nㆍm to 2.35 ${times}$10$^{-6}$TEX>$mm^{3}$/Nㆍm. Experimental results indicated that the wear behavior of the alumina-glass composites with a sliding distance of 4.4 km was a typical adhesive wear, which was applicable for orthodontia ceramic brackets. |
| Key words:
Wear, In-vitro, Alumina-glass composites, Dental brackets |
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