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Communication Dans Un Congrès Advanced Materials Research Année : 2010

Gradation process by imbibition in WC-Co for mining tools application

Résumé

Continuous composition gradients of several millimetres were generated in commercial WC-Co cutters to improve their shock resistance. This important gradation was obtained in one-step by using the imbibition process. The effects of this thermal processing were analysed in terms of microhardness, cobalt concentration and WC grain size. A gradient of a 300 HV amplitude is measured in the 8 mm-height sample treated by the imbibition process in association with a boron-rich coating. This gradient was preserved after the HPHT (high pressure – high temperature) step used for the diamond table deposition on the WC-Co cutter. To our knowledge, such gradients have never before been reported and should certainly increase cutter service life.

Domaines

Matériaux
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Dates et versions

hal-00461475 , version 1 (04-03-2010)

Identifiants

Citer

Elodie Lefort-Sorlier, Christophe Colin, Alfazazi Dourfaye. Gradation process by imbibition in WC-Co for mining tools application. Advances in Materials and Processing Technologies, Nov 2008, Manama, Bahrain. pp.810-817, ⟨10.4028/www.scientific.net/AMR.83-86.810⟩. ⟨hal-00461475⟩
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