Functionally graded cemented carbides elaboration by imbibition process—Better understanding of liquid migration and homogenization mechanisms for an improved process

Abstract : Cemented carbides are used in rock drilling, for mining tools and other wear-resistant parts. These composite materials possess an excellent compromise between hardness and toughness. Currently, the concept of graded structure (FGM) is widely studied to improve these two properties simultaneously, and thus to increase the service life of drilling tools. This paper focuses on the imbibition process. The imbibition process gradually enriches the core of dense cemented carbide with binder phase and is based on the principle of liquid-phase migration in a solid/liquid body. FGM generated by such techniques shows interesting mechanical properties gradient, such as 400 HV on 20 mm hardness gradient. Hardness gradient development is achieved through a better understanding of kinetics and other phenomena occurring during imbibition. The goal is to select suitable process parameter for each grade of carbide.
Type de document :
Communication dans un congrès
Liste complète des métadonnées

https://hal-mines-paristech.archives-ouvertes.fr/hal-01678345
Contributeur : Bibliothèque Umr7633 <>
Soumis le : mardi 9 janvier 2018 - 10:49:08
Dernière modification le : lundi 12 novembre 2018 - 10:56:24

Identifiants

  • HAL Id : hal-01678345, version 1

Citation

Olivier Ther, Christophe Colin, A. Dourfaye. Functionally graded cemented carbides elaboration by imbibition process—Better understanding of liquid migration and homogenization mechanisms for an improved process. Proceedings of FiMPART 2015, Jun 2015, Hyderabad, India. pp.93-106. ⟨hal-01678345⟩

Partager

Métriques

Consultations de la notice

90