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12 - Aeronautical, Mechanical, Chemical and Manufacturing Engineering
University of Strathclyde
A quantitative assessment of nanometric machinability of major polytypes of single crystal silicon carbide
The paper presents the first investigation on machinability of major polytypes of single crystal silicon carbide (SiC). Using a novel micro-structure modelling approach for SiC, implemented through Molecule Dynamics simulation, current knowledge was overturned by showing that 4H-SiC has better machinability in terms of achievable surface finish and surface integrity. The study provided a foundation for selecting SiC materials for manufacture of next-generation optical and electronic components (oriemer@lfm.uni-bremen.de, and world-leading SiC manufacturer, CoorsTek Ltd., kpfaffenbach@coorstek.com). The research has confirmed diamond turning of SiC in the German company Son-x, which specialises in ultrasonic devices (benjamin.bulla@son-x.com).
