Theoretical Analysis and Experimental Investigations of the Frictional Wear Characteristics of Nanometric Zirconia Ceramics

Abstract:

This study was focused on the theoretical analysis and experimental investigations about the frictional wear of nanometric zirconia dental ceramics. An MRH-3 digital-display high-speed ring-on-block tribometer was used for frictional wear experiments. A PGI800 coarseness profiling instrument was used to test the width and the length of the grinding defects on specimen surfaces. An S-3500N SEM was employed in the microscopic observation of the surface morphology after the abrasion. Results indicated that the frictional factor and the wear rate of nanometric ZrO₂ ceramics decreased significantly under identical working and frictional conditions compared with ZrO₂. The wear mechanism of nanometric ZrO₂ ceramics was micromachining and plastic deformation while the wearing mechanism of ZrO₂ ceramics was brittle fracture and abrasive wear.

• Periodical: Advanced Materials Research (Volumes 211-212)
• Pages: 26-30
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.211-212.26
• Online since: February 2011
• Authors: Chang He Li, Ling Yun Qi, Lin Gang Li, Yu Cheng Ding
• Keywords: Dental Ceramic, Frictional Wear Characteristic, Nanometric Zirconia

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