The　electron　backscattered　diffraction　measurement,　coupled　with　a　statistical　and　stereological　approach　namely　five　parameter　analysis　method,　was　used　to　investigate　the　character　distributions　of　carbide/carbide　grain　boundaries　in　a　WC-6　wt%Co　cemented　carbide　sample　and　a　WC-6　wt%Ni　cemented　carbide　sample.　The　90　degrees/[10-10]　boundary　was　found　as　the　most　frequently　occurring　carbide/carbide　boundary　type　in　both　samples,　however,　the　populations　as　well　as　spatial　distributions　of　the　90　degrees/[10-10]　boundary　varied　with　different　binder　phases.　Moreover,　traces　of　the　90　degrees/[10-10]　grain　boundaries　may　have　separate　configurations　or　adjoin　at　triple　junctions.　The　geometry　features　of　90　degrees/[10-10]　boundary　traces　indicate　that　the　energy　equilibrium　of　the　referred　carbide　grains　has　significant　potential　on　the　crack　propagation.　(C)　2014　Elsevier　B.V.　All　rights　reserved.