Electrical Discharge Machining of ZrO2 Toughened WC Composites

O. Malek; J. Vleugels; Y. Perez; P. De Baets; Junhu Liu; Sven Van den Berghe; B. Lauwers

Electrical Discharge Machining of ZrO2 Toughened WC Composites

O. Malek, J. Vleugels, Y. Perez, P. De Baets, Junhu Liu, Sven Van den Berghe, B. Lauwers

Research output › peer-review

Abstract

The interrelationships between the dispersion of the ZrO2 phase and the Electrical Discharge Machining (EDM) behaviour of WC-based composites with up to 10 vol % of ZrO2 are investigated. Special attention was given to the homogeneity of the ultrafine WC - nanometric ZrO2 powder based composites which were fully densified by means of pulsed electric current sintering (PECS). XPS measurements reveal the presence of a nanometric WO3 layer on the EDM surface, confirming oxidation as a major material removal mechanism (MRM). The surface roughness after the final EDM finishing regime was strongly influenced by the presence of ZrO2 agglomerates and could be reduced down to 0.15 µm (Ra) on agglomerate-free composites.

Original language	English
Title of host publication	Proceedings of the International Conference on High Performance P/M Materials
Place of Publication	Austria
State	Published - May 2009
Event	International Conference on High Performance P/M Materials - Reutte Duration: 25 May 2009 → 29 May 2009

Conference

Conference	International Conference on High Performance P/M Materials
Country/Territory	Austria
City	Reutte
Period	2009-05-25 → 2009-05-29

Cite this

@inproceedings{7927e8477aa74eb183ea2c048cd70154,

title = "Electrical Discharge Machining of ZrO2 Toughened WC Composites",

abstract = "The interrelationships between the dispersion of the ZrO2 phase and the Electrical Discharge Machining (EDM) behaviour of WC-based composites with up to 10 vol % of ZrO2 are investigated. Special attention was given to the homogeneity of the ultrafine WC - nanometric ZrO2 powder based composites which were fully densified by means of pulsed electric current sintering (PECS). XPS measurements reveal the presence of a nanometric WO3 layer on the EDM surface, confirming oxidation as a major material removal mechanism (MRM). The surface roughness after the final EDM finishing regime was strongly influenced by the presence of ZrO2 agglomerates and could be reduced down to 0.15 µm (Ra) on agglomerate-free composites.",

keywords = "Pulsed Electric Current Sintering, Composites, Electrical Discharge Machining, X-ray Photoelectron Spectroscopy",

author = "O. Malek and J. Vleugels and Y. Perez and {De Baets}, P. and Junhu Liu and {Van den Berghe}, Sven and B. Lauwers",

note = "Score = 3; International Conference on High Performance P/M Materials ; Conference date: 25-05-2009 Through 29-05-2009",

year = "2009",

month = may,

language = "English",

booktitle = "Proceedings of the International Conference on High Performance P/M Materials",

}

TY - GEN

T1 - Electrical Discharge Machining of ZrO2 Toughened WC Composites

AU - Malek, O.

AU - Vleugels, J.

AU - Perez, Y.

AU - De Baets, P.

AU - Liu, Junhu

AU - Van den Berghe, Sven

AU - Lauwers, B.

N1 - Score = 3

PY - 2009/5

Y1 - 2009/5

N2 - The interrelationships between the dispersion of the ZrO2 phase and the Electrical Discharge Machining (EDM) behaviour of WC-based composites with up to 10 vol % of ZrO2 are investigated. Special attention was given to the homogeneity of the ultrafine WC - nanometric ZrO2 powder based composites which were fully densified by means of pulsed electric current sintering (PECS). XPS measurements reveal the presence of a nanometric WO3 layer on the EDM surface, confirming oxidation as a major material removal mechanism (MRM). The surface roughness after the final EDM finishing regime was strongly influenced by the presence of ZrO2 agglomerates and could be reduced down to 0.15 µm (Ra) on agglomerate-free composites.

AB - The interrelationships between the dispersion of the ZrO2 phase and the Electrical Discharge Machining (EDM) behaviour of WC-based composites with up to 10 vol % of ZrO2 are investigated. Special attention was given to the homogeneity of the ultrafine WC - nanometric ZrO2 powder based composites which were fully densified by means of pulsed electric current sintering (PECS). XPS measurements reveal the presence of a nanometric WO3 layer on the EDM surface, confirming oxidation as a major material removal mechanism (MRM). The surface roughness after the final EDM finishing regime was strongly influenced by the presence of ZrO2 agglomerates and could be reduced down to 0.15 µm (Ra) on agglomerate-free composites.

KW - Pulsed Electric Current Sintering

KW - Composites

KW - Electrical Discharge Machining

KW - X-ray Photoelectron Spectroscopy

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_100670

UR - http://knowledgecentre.sckcen.be/so2/bibref/6136

M3 - In-proceedings paper

BT - Proceedings of the International Conference on High Performance P/M Materials

CY - Austria

T2 - International Conference on High Performance P/M Materials

Y2 - 25 May 2009 through 29 May 2009

ER -