abstract
In the present work, the effect of different binder materials on the tribological properties of cemented carbides was studied. Flat samples of conventional WC-Co, and newly developed WC-AISI 304 stainless steel (SS) composites with and without carbon addition were surface finished by grinding and polishing. Comparative experiments were performed using a ball-cratering tribometer. Worn surfaces were characterized by optical microscopy, surface scanning topography and scanning electron microscopy. It was found that the abrasive wear resistance of the developed WC-SS composites is higher than that of conventional WC-Co and decreases with the carbon addition, in a direct relation with the decreasing hardness. The mechanisms of wear degradation are discussed. (C) 2015 Elsevier B.V. All rights reserved.
keywords
ROCK-DRILL BUTTONS; MICROABRASION RESISTANCE; SPRAYED COATINGS; COATED SURFACES; HARDMETALS; CORROSION; BEHAVIOR; TRANSITIONS; FRICTION; 2-BODY
subject category
Engineering; Materials Science
authors
Vilhena, LM; Fernandes, CM; Soares, E; Sacramento, J; Senos, AMR; Ramalho, A
our authors
Ana Maria de Oliveira e Rocha Senos
Collaborator
Cristina Maria da Silva Fernandes
CollaboratorGroups
G2 - Photonic, Electronic and Magnetic Materials
G3 - Electrochemical Materials, Interfaces and Coatings
acknowledgements
The author L.M. Vilhena gratefully acknowledges the financial support of the Portuguese Foundation for Science and Technology (FCT), through the program QREN-POPH, reference: SFRH/BPD/92787/2013.; The author C.M. Fernandes gratefully acknowledge the financial support from the program COMPETE and by national funds through FCT under the grant SFRH/BPD/43402/2008. This research is also sponsored by FEDER through Programa Operacional Factores de Competitividade - COMPETE and national funds through FCT - Fundacao para a Ciencia e Tecnologia within CICECO project - FCOMP-01-0124-FERDER-037271 (FCT Ref. Pest-C/CTM/LA0011/2013).