By Waqar Ahmed
This quantity provides chemical vapour deposition of diamond movies for software in slicing instruments, microdrills, dental burs and surgical instruments. It examines a variety of deposition suggestions, discusses mechanisms of diamond development and their effect on slicing instrument lifestyles and performance.
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Extra resources for Chemical Vapour Deposition of Diamond for Dental Tools and Burs
4 SEM of a conventional sintered diamond bur showing lateral and top views (Sein et al. 2004a, b) are the Co/WC ratio and the WC particle size. These parameters have a significant impact on the control of the bulk material properties (Jian et al. 2004). In general, course grained WC combined with a high % Co give better shock resistance and impact strength. However, finer grained WC and thus larger surface area and lower % Co gives harder and greater wear resistance (Jian et al. 2004). Therefore to achieve optimum performance premature failure needs to be avoided whilst at the same time achieving a higher wears resistance (Yared et al.
Reproduced with permission. 6 Machining Materials with Dental Burs Wide ranges of tests have been carried out on dental burs. Surprisingly few of these consider the cutting surface and performance of the bur. Many use an approach addressing the physical properties of instrumentation under conditions that are not similar to clinical operating conditions. Those that do simulate clinical conditions tend to be specific with respect to the area of interest and thus the results have very limited relevance outside of the direct application.
The development of the hot filament CVD process is described in terms of surface pretreatments and CVD equipment preparation. The chapter then focuses on how metal cutting theory can be applied to the machining of bone which is an essential procedure in dental practice. 1 Introduction The modified hot filament chemical vapour deposition (HFCVD) system has been described. The initial testing of the system in terms of filament characteristics, power considerations and ultimately the deposition experiments were carried out in order to optimise the substrate pre-treatments and the experimental CVD conditions for the diamond growth.
Chemical Vapour Deposition of Diamond for Dental Tools and Burs by Waqar Ahmed