Development and performance evaluation of La2O3 doped WC-10Co-4Cr coatings for enhanced biofouling and slurry abrasion resistance
Tungsten carbide WC-based coatings are widely used for wear-resistant applications; however, enhancing their resistance to biofouling remains a critical challenge, especially in abrasive and microbial environments. This study investigates the influence of La2O3 doping on the microstructure, mechanic...
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Elsevier
2025-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425018010 |
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| author | Vikrant Singh Mohit Vishnoi N. Jeyaprakash Syed Quadir Moinuddin Anindita De Anuj Bansal |
| author_facet | Vikrant Singh Mohit Vishnoi N. Jeyaprakash Syed Quadir Moinuddin Anindita De Anuj Bansal |
| author_sort | Vikrant Singh |
| collection | DOAJ |
| description | Tungsten carbide WC-based coatings are widely used for wear-resistant applications; however, enhancing their resistance to biofouling remains a critical challenge, especially in abrasive and microbial environments. This study investigates the influence of La2O3 doping on the microstructure, mechanical performance, and antifouling behaviour of WC-10Co-4Cr coatings. In the present study, WC-10Co-4Cr and 1.5 wt% La2O3 doped WC-10Co-4Cr coatings were successfully developed over SS410 steel using High-Pressure High-Velocity Oxy-Fuel (HP-HVOF) spraying. La2O3 addition refined the microstructure, reduced porosity, and enhanced splat bonding. The doped coating exhibited superior microhardness (1228 HV0.3), higher bond strength (78.7 MPa), and reduced surface roughness. Slurry abrasion testing revealed the lowest mass loss for La2O3 doped coating (6.38–17.11 mg), owing to its dense and hard structure. Furthermore, biofouling analysis confirmed excellent antibacterial performance of the doped coating against and Escherichia coli, attributed to enhanced hydrophobicity and antimicrobial action of La2O3. Overall, La2O3 doping significantly improved mechanical, wear, and biofouling resistance. These enhancements position the doped coating as a promising candidate for use in highly abrasive and biofouling-prone environments. |
| format | Article |
| id | doaj-art-c74ed927bb314778b1aab3ec8e8c4dbf |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-c74ed927bb314778b1aab3ec8e8c4dbf2025-08-20T02:50:17ZengElsevierJournal of Materials Research and Technology2238-78542025-07-01375153516610.1016/j.jmrt.2025.07.143Development and performance evaluation of La2O3 doped WC-10Co-4Cr coatings for enhanced biofouling and slurry abrasion resistanceVikrant Singh0Mohit Vishnoi1N. Jeyaprakash2Syed Quadir Moinuddin3Anindita De4Anuj Bansal5Department of Mechanical Engineering, Graphic Era (Deemed to be University), Clement town, Dehradun, 248002, IndiaDepartment of Mechanical Engineering, JSS University, Noida, Uttar Pradesh, 201301, India; Corresponding author.Department of Mechanical Engineering , Global College of Engineering and Technology, Muscat, OmanDepartment of Mechanical Engineering, College of Engineering, King Faisal University, Al Ahsa, 31982, Saudi Arabia; Corresponding author.Department of Pharmaceutics, College of Pharmacy, JSS University, Noida, Uttar Pradesh, 201301, IndiaSant Longowal Institute of Engineering and Technology, Longowal, Sangrur, 148106, Punjab, IndiaTungsten carbide WC-based coatings are widely used for wear-resistant applications; however, enhancing their resistance to biofouling remains a critical challenge, especially in abrasive and microbial environments. This study investigates the influence of La2O3 doping on the microstructure, mechanical performance, and antifouling behaviour of WC-10Co-4Cr coatings. In the present study, WC-10Co-4Cr and 1.5 wt% La2O3 doped WC-10Co-4Cr coatings were successfully developed over SS410 steel using High-Pressure High-Velocity Oxy-Fuel (HP-HVOF) spraying. La2O3 addition refined the microstructure, reduced porosity, and enhanced splat bonding. The doped coating exhibited superior microhardness (1228 HV0.3), higher bond strength (78.7 MPa), and reduced surface roughness. Slurry abrasion testing revealed the lowest mass loss for La2O3 doped coating (6.38–17.11 mg), owing to its dense and hard structure. Furthermore, biofouling analysis confirmed excellent antibacterial performance of the doped coating against and Escherichia coli, attributed to enhanced hydrophobicity and antimicrobial action of La2O3. Overall, La2O3 doping significantly improved mechanical, wear, and biofouling resistance. These enhancements position the doped coating as a promising candidate for use in highly abrasive and biofouling-prone environments.http://www.sciencedirect.com/science/article/pii/S2238785425018010SS410La2O3AbrasionBiofoulingAnti-microbial |
| spellingShingle | Vikrant Singh Mohit Vishnoi N. Jeyaprakash Syed Quadir Moinuddin Anindita De Anuj Bansal Development and performance evaluation of La2O3 doped WC-10Co-4Cr coatings for enhanced biofouling and slurry abrasion resistance Journal of Materials Research and Technology SS410 La2O3 Abrasion Biofouling Anti-microbial |
| title | Development and performance evaluation of La2O3 doped WC-10Co-4Cr coatings for enhanced biofouling and slurry abrasion resistance |
| title_full | Development and performance evaluation of La2O3 doped WC-10Co-4Cr coatings for enhanced biofouling and slurry abrasion resistance |
| title_fullStr | Development and performance evaluation of La2O3 doped WC-10Co-4Cr coatings for enhanced biofouling and slurry abrasion resistance |
| title_full_unstemmed | Development and performance evaluation of La2O3 doped WC-10Co-4Cr coatings for enhanced biofouling and slurry abrasion resistance |
| title_short | Development and performance evaluation of La2O3 doped WC-10Co-4Cr coatings for enhanced biofouling and slurry abrasion resistance |
| title_sort | development and performance evaluation of la2o3 doped wc 10co 4cr coatings for enhanced biofouling and slurry abrasion resistance |
| topic | SS410 La2O3 Abrasion Biofouling Anti-microbial |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425018010 |
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