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The objective of this work is to compare the performance of uncoated micro end mills with micro end mills coated using various pretreatments and diamond coatings. Testing is conducted with 300-um-diameter, two-flute, carbide end mills cutting full-width slots in 6061-T6 aluminum. The comparison of these tools is conducted with a robustness test where the feed rate of the tool is increased every 5...
We show that thin diamond coatings can dramatically enhance the performance of micrometer-scale cutting tools. We present a new approach for coating 300 μm diameter tungsten carbide (WC) micro end mills using a tailored seeding method and hot filament chemical vapor deposition (HFCVD) to obtain uniform, conformal, and continuous diamond coatings less than 2 μm in both thickness and grain size. The...
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