The Effect Of Annealing On The Corrosion Behaviour Of Thermal Sprayed WC-Co And WC-VC-Co Coatings
- Organization:
- The Southern African Institute of Mining and Metallurgy
- Pages:
- 10
- File Size:
- 347 KB
- Publication Date:
- Jan 1, 2006
Abstract
The aim of this work was to compare the corrosion behaviour of thermal spray WC ? based coatings before and after annealing. X-ray diffraction (XRD) was used to determine the phases present in the coatings at various stages. The corrosion resistance of the coatings was measured using electrochemical and immersion corrosion tests. The results obtained from electrochemical corrosion (quantified by corrosion current density) and immersion corrosion tests showed that annealing appears to decrease the corrosion resistance of the coatings. From the XRD results it was determined that the phases that corroded preferentially were cobalt (Co), eta (Co6W6C) and W2C. Keywords: Corrosion, thermal spray, coatings, hardmetals.
Citation
APA: (2006) The Effect Of Annealing On The Corrosion Behaviour Of Thermal Sprayed WC-Co And WC-VC-Co Coatings
MLA: The Effect Of Annealing On The Corrosion Behaviour Of Thermal Sprayed WC-Co And WC-VC-Co Coatings. The Southern African Institute of Mining and Metallurgy, 2006.