Diamond-coated cutting tools for biomedical applications |
| |
Authors: | M. J. Jackson L. J. Hyde W. Ahmed H. Sein R. P. Flaxman |
| |
Affiliation: | (1) Center for Manufacturing Research, Tennessee Technological University, P.O. Box 5014, 38505 Cookeville, TN;(2) Department of Chemistry and Materials, Manchester Metropolitan University, Chester Street, M1 5GD Manchester, UK;(3) Cavendish Laboratory, University of Cambridge, Madingley Road, CB3 0HE Cambridge, UK |
| |
Abstract: | Diamond coatings are attractive for cutting processes due to their high-hardness, low-friction coefficient; excellent wear resistance, and chemical inertness. The application of diamond coatings on cemented, tungsten carbide (WC-Co) burs has been the subject of much attention in recent years as a method to improve cutting performance and tool life. WC-Co burs containing 6% Co and 94% WC substrate, with an average grain size of 1–3 μm, were used in this study. To improve the adhesion between diamond and WC substrates, it is necessary to etch away the surface Co and prepare the surface for subsequent diamond growth. Hot filament chemical vapor deposition (HFCVD), with a modified vertical filament arrangement, has been used for the deposition of diamond films. Diamond film quality and purity has been characterized using scanning electron microscopy (SEM) and micro-Raman spectroscopy. The performance of diamond-coated WC-Co burs, uncoated WC-Co burs, and diamond-embedded (sintered) burs have been compared by drilling a series of holes into various materials such as human teeth, borosilicate glass, and acrylic teeth. Flank wear has been used to assess the wear rates of the burs when machining biomedical materials such as those just described. This paper was presented at the 2nd International Surface Engineering Congress sponsored by ASM International, on September 15–17, 2003, in Indianapolis, Indiana, and appears on pp. 273–82 of the Proceedings. |
| |
Keywords: | biomedical applications CVD diamond dental burs microtools wear |
本文献已被 SpringerLink 等数据库收录! |
|