Corrosion resistance of WC hardmetals with different Co and Ni-based binders

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abstract

In this work, industrially relevant WC composites with alternative binders (Ni, CoNi, NiCr, CoCr, CoNiCr and NiCrMo) were produced and their corrosion resistance in 0.5 M NaCl was compared to conventional WC-Co system. The main objective is to develop hardmetals with higher corrosion resistance to extend the lifetime of tools and equipment, reducing the demand for new parts and maintenance, thus decreasing the total cost of the operation. The study includes different electrochemical techniques, namely corrosion potential monitoring, Electrochemical Impedance Spectroscopy (EIS) and polarization curves. The purpose is to evaluate the influence of each element on the corrosion resistance of the composites produced.

keywords

ELECTROCHEMICAL-BEHAVIOR; ANODIC POLARIZATION; CEMENTED CARBIDES; DISSOLUTION; MECHANISM; DAMAGE

subject category

Materials Science; Metallurgy & Metallurgical Engineering

authors

Pereira, P; Rocha, AMF; Sacramento, J; Oliveira, FJ; Senos, AMR; Malheiros, LF; Bastos, AC

our authors

no photo

Alexandre Manuel Ferro Rocha

PhD Student
foto Ana Maria de Oliveira e Rocha Senos

Ana Maria de Oliveira e Rocha Senos

Collaborator
foto António Alexandre Cunha Bastos

António Alexandre Cunha Bastos

Assistant Researcher
foto Filipe José Alves de Oliveira

Filipe José Alves de Oliveira

Principal Researcher

Groups

G2 - Photonic, Electronic and Magnetic Materials
G3 - Electrochemical Materials, Interfaces and Coatings

Projects

CICECO - Aveiro Institute of Materials (UIDB/50011/2020)

CICECO - Aveiro Institute of Materials (UIDP/50011/2020)

Collaboratory for Emerging Technologies, CoLab (EMERGING TECHNOLOGIES)

acknowledgements

P. Pereira acknowledges FCT for financial support (SFRH/BD/138040/2018). This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by national funds through the Portuguese Foundation for Science and Technology/MCTES and project HARDTECH-POCI-01-0247-FEDER-045283, financed by FEDER under PT2020 Partnership Agreement. A. M. Ferro Rocha thanks FCT for the PhD grant SFRH/BD/147060/2019. A. C. Bastos is funded by national funds (OE), through FCT - Fundacao para a Ciencia e a Tecnologia, I.P., in the scope of the framework contract foreseen in the numbers 4, 5 and 6 of the article 23, of the Decree-Law 57/2016, of August 29, changed by Law 57/2017, of July 19 (CEECIND/01329/2017).

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Publication Details

type
Journal Article
year
2022
journal
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
volume
104
article number
105799
publisher
ELSEVIER SCI LTD
issn
0263-4368
digital object identifier
10.1016/j.ijrmhm.2022.105799
web of science article identifier
WOS:000772705800012

Journal Metrics (JCR 2019)

Journal Impact Factor
3.407
Journal Impact Factor (5 yrs)
3.414
category normalized journal percentile
74.963

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