Effect of Grain Size of CVD Diamond Film on Cutting Performance of Diamond Coated Micro Drills

Xue Lin Lei; Liang Wang; Bin Shen; Fang Hong Sun; Ming Chen

doi:10.4028/www.scientific.net/MSF.723.407

Paper Titles

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Actually Geometry of Milling Tool Involved in Cutting Process
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Experimental Study on Cutting Force of High-Speed Micro-Drilling Flexible Printed Circuit Board
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Effect of Grain Size of CVD Diamond Film on Cutting Performance of Diamond Coated Micro Drills
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Design and Dynamic Analysis of Micro Milling Machine
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A New Approach to Five-Axis CNC Flute Grinding of Solid End-Mills
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Temperature Measurement and Burn Mechanism of Stainless Steel 1Cr11Ni2W2MoV in Grinding
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Load Distribution Balance Principle of Petroleum Buttress Casing Thread and its NC Machining Method
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HomeMaterials Science ForumMaterials Science Forum Vol. 723Effect of Grain Size of CVD Diamond Film on...

Effect of Grain Size of CVD Diamond Film on Cutting Performance of Diamond Coated Micro Drills

Abstract:

In this study, micro- crystalline diamond(MCD), fine grade diamond(FGD) and nano- crystalline diamond(NCD) thin films are successfully coated on WC-Co micro drills(φ=400µm) adopting hot filament chemical vapor deposition (HFCVD) technique. The microstructure and cutting performance of micro drills for applying to drill electrical discharge machining(EDM) graphite coated with MCD, FGD and NCD films are systematically investigated by means of field emission scanning electron microscope(FESEM) and Raman spectroscopy. After drilling of 1500 holes, wear behavior of these micro drills is analyzed by FESEM and NCD coated micro drills exhibit minimum flank wear compared with the other samples due to the relatively good wear resistance and friction properties of NCD films.