Effect of transverse current injection on the grinding of cemented carbide

N. Parkansky*, L. Rapoport, B. Alterkop, R. L. Boxman, S. Goldsmith

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Cemented carbide (WC-Co) samples with dimensions of 5 × 6.5 × 20 mm3 were ground using a reciprocating table surface grinding machine. Direct electrical current with densities of 0-120 A cm-2 were injected along the length of the sample during grinding. The hardness, structure, and composition of the processed surfaces were examined using Vickers indentation, profilometry, metallographic optical microscopy and scanning electron microscopy (SEM), with scattered electrons (SE), backscattered electrons (BSE) and energy dispersive spectroscopy (EDS). The surface roughness increased up to a factor of 2.6 at J = 60 A cm-2 at a cutting depth of 0.06 mm, and the microhardness increased up to 28% with J = 120 A cm-2 at a depth of cut 0.06 mm, in comparison with samples ground without injected current. The atomic concentration ratio WC/Co increased by a factor of 2 at the surface and decreased by a factor of 5 at a depth of 3 μm, when the injected current density was 60 A cm-2.

Original languageEnglish
Pages (from-to)242-246
Number of pages5
JournalInternational Journal of Advanced Manufacturing Technology
Issue number4
StatePublished - 2001


  • Composition
  • Electric current
  • Grinding
  • Hardness
  • Indentation
  • Structure


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