Study on Recyclability of Graphite Cutting Chips as Conductive Fillers

Abstract

Reusing graphite cutting chips as thermal and electrically conductive fillers in heat-resistant ceramics is the goal of
this work. Using packing cokes, graphite-containing ceramic test pieces can be consolidated in an oxidation-free
environment; the maximum permitted concentration of supplied graphite chips is 60 weight percent. However, by
reducing the chip particle size below 157 m and preparing their slurry with ceramic particles and surfactant water
solution prior to the manufacturing of test pieces, better thermal and electrical properties can be produced. The
addition of refined graphite chips up to 80 weight percent greatly improves the thermal and electrical properties of
composite test pieces, although the maximum thermal property is obtained with the filler quantity of 60 weight
percent. Due to the inability of forming enough heat conduction pathways with