Comparative Studies on the Cutting Performance of HFCVD Diamond and DLC Coated WC-Co Milling Tools in Dry Machining Al/SiC-MMC

Bin Shen; Fang Hong Sun; Dong Can Zhang

doi:10.4028/www.scientific.net/AMR.126-128.220

Paper Titles

Tool Wear Mechanism in Continuous Cutting of Difficult-to-Cut Material under Dry Machining
p.195

On Geometrical Errors and their Suppression in Turning Operation by Controlling Thrust Forces
p.202

Optimal Improvement on Cutting Yield Rate in ACF Attach Process of TFT-LCD Module Using Response Surface Method
p.208

Study on Tool Life by Breakage in Micro Endmilling
p.214

Comparative Studies on the Cutting Performance of HFCVD Diamond and DLC Coated WC-Co Milling Tools in Dry Machining Al/SiC-MMC
p.220

Study on the Cutting Performance of HFCVD Diamond Coated Silicon Nitride Inserts in Dry Turning Aluminum Silicon Alloy
p.226

Elastic and Plastic Behaviors in Ductile-Regime Machining Process of Quartz Glass
p.235

DEM Simulation and Experimental Investigation of Silicon Carbide on Pre-Stressed Machining
p.241

A Study on the Ductile Mode Cutting of Lithium Niobate
p.246

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 126-128Comparative Studies on the Cutting Performance of...

Comparative Studies on the Cutting Performance of HFCVD Diamond and DLC Coated WC-Co Milling Tools in Dry Machining Al/SiC-MMC

Abstract:

The chemical vapor deposition (CVD) diamond and diamond-like carbon (DLC) films are deposited on the cobalt cemented tungsten carbide (WC-Co) cutting tools respectively using the hot filament chemical vapor deposition (HFCVD) technique and the vacuum arc discharge with a graphite cathode. The scanning electron microscope (SEM), optical interferometer profiler and Raman spectroscopy were adopted to characterize the as-deposited diamond and DLC films. The cutting performance of as-fabricated CVD diamond and DLC coated milling tools is evaluated in dry milling SiC particulate reinforced Al-metal matrix composite material (Al/SiC-MMCs), comparing with the uncoated WC-Co milling tool. The milling results demonstrate that the uncoated WC-Co milling tool suffers severest wear in its circumferential cutting edge, while the wear of DLC coated milling tool is slightly lower. Comparatively, the CVD diamond coated milling tool exhibits much stronger wear resistance. The wear on its circumferential cutting edge is less than 0.07 mm at the end of milling test, only a half of that of DLC coated milling tool. This result is attributed to the extremely high hardness and strong adhesive strength of CVD diamond film covered on the WC-Co milling tool.