Journal
THIN SOLID FILMS
Volume 518, Issue 24, Pages 7487-7491Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2010.05.031
Keywords
CVD-diamond films; Dry machining; Interface engineering; Tool geometry; Tool wear
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Funding
- National Science Foundation [IIP 0741028, CMMI 0728228]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0928823] Funding Source: National Science Foundation
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CVD-diamond for dry drilling applications is reported. Specifically, the fabrication of nanostructured diamond-coated drills is outlined. Tool life is evaluated by dry drilling of aluminum alloy and nanostructured diamond-coated drills show a superior performance to uncoated drills. In addition, different surface treatments have been studied with the effects on diamond film deposition and delamination investigated. Moreover, drill edge geometry has been evaluated. Major findings indicate that the drill edge radius plays a critical role to the drilling performance. A slightly honed edge may lead to improved performance due to the reduction of deposition stresses at the tool edge. (C) 2010 Elsevier B.V. All rights reserved.
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