TY - JOUR
T1 - Electrical discharge machining of B(4)C-TiB(2) composites
AU - Malek, Olivier
AU - Vleugels, Jef
AU - Vanmeensel, Kim
AU - Huang, Shuigen
AU - Liu, Junhu
AU - Van den Berghe, Sven
AU - Datye, Amid
AU - Wu, Kuang-Hsi
AU - Lauwers, Bert
N1 - Score = 10
PY - 2011/10/1
Y1 - 2011/10/1
N2 - The interrelationships between the microstructure and electrical discharge machining (EDM) behaviour of B(4)C-TiB(2) composites with respectively 30, 40 and 60 vol.% TiB(2) are investigated. Special attention was given to the influence of the grain size on the EDM behaviour by producing composites with an ultrafine TiB(2) phase using in situ synthesis during PECS. The experimental work revealed that 40 vol.% of TiB(2) results in an optimal material removal rate while the surface roughness for rough cut EDM decreases with increasing TiB(2) content. The finer microstructure of the ultrafine composite shows higher MRR's and lower Ra values than the commercial powder based composites. The major material removal mechanism for the PECS based composites was melting. The 3 point bending strength of all composites after grinding, EDM rough cut and EDM finish cut was not statistically different and about 800 MPa. The EDM recast layer was analysed by X-ray photoelectron spectroscopy.
AB - The interrelationships between the microstructure and electrical discharge machining (EDM) behaviour of B(4)C-TiB(2) composites with respectively 30, 40 and 60 vol.% TiB(2) are investigated. Special attention was given to the influence of the grain size on the EDM behaviour by producing composites with an ultrafine TiB(2) phase using in situ synthesis during PECS. The experimental work revealed that 40 vol.% of TiB(2) results in an optimal material removal rate while the surface roughness for rough cut EDM decreases with increasing TiB(2) content. The finer microstructure of the ultrafine composite shows higher MRR's and lower Ra values than the commercial powder based composites. The major material removal mechanism for the PECS based composites was melting. The 3 point bending strength of all composites after grinding, EDM rough cut and EDM finish cut was not statistically different and about 800 MPa. The EDM recast layer was analysed by X-ray photoelectron spectroscopy.
KW - Composites
KW - Electrical conductivity
KW - Thermal conductivity
KW - Borides
KW - Electrical discharge machining
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_114415
UR - http://knowledgecentre.sckcen.be/so2/bibref/8161
U2 - 10.1016/j.jeurceramsoc.2011.04.024
DO - 10.1016/j.jeurceramsoc.2011.04.024
M3 - Article
SN - 0955-2219
VL - 31
SP - 2023
EP - 2030
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 11
ER -