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Effect of Laser Power on the Electrochemical Performance of a Ni-60%WC Alloy Laser Clad Coating on H13 Steel.
- Source :
- Lasers in Engineering (Old City Publishing); 2023, Vol. 56 Issue 1-3, p177-190, 14p
- Publication Year :
- 2023
-
Abstract
- Ni-60%WC alloy coatings were prepared on the surface of a H13 steel substrate by laser cladding with a fibre laser at different laser powers. The microstructure and phases of the laser clad Ni-60%WC alloy coatings fabricated with laser power of 2100, 2500 and 2900 W were analyzed, and the electrochemical performance was measured by the potentiodynamic polarization curve (PPC) and electrochemical impedance spectroscopy (EIS). The results showed that the laser clad Ni-60%WC alloy coatings were composed of WC, W<subscript>2</subscript>C, and NiC phases, and the WC particles were homogeneously distributed throughout the coating cross-sections to form sound metallurgical bonding with the H13 steel substrate. The corrosion current density i<subscript>corr</subscript>, and polarization resistance R<subscript>p</subscript>, were lowest on the laser clad Ni-60%WC alloy coating fabricated with a laser power of 2500 W. The impedance of this sample also exhibited the largest, demonstrating that the appropriate laser power will improve corrosion resistance. [ABSTRACT FROM AUTHOR]
- Subjects :
- LASERS
ALLOYS
STEEL
IMPEDANCE spectroscopy
SURFACE coatings
FIBER lasers
Subjects
Details
- Language :
- English
- ISSN :
- 08981507
- Volume :
- 56
- Issue :
- 1-3
- Database :
- Complementary Index
- Journal :
- Lasers in Engineering (Old City Publishing)
- Publication Type :
- Academic Journal
- Accession number :
- 173203624