Synergistic effect of Al2O3 and MoS2 on the corrosion behaviour of plasma sprayed aluminium matrix composite coating

被引：2
作者：
Keshri S. [1 ]
Pandit N. [1 ]
Singh P. [1 ]
Grain A.K. [1 ]
Keshri A.K. [1 ]
机构：
[1] Plasma Spray Coating Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Patna, Patna
来源：
Journal of Alloys and Compounds | 2024年 / 998卷
关键词：
Al[!sub]2[!/sub]O[!sub]3[!/sub; Aluminium matrix composite; Corrosion; Hydrophobicity; MoS[!sub]2[!/sub;
D O I：
10.1016/j.jallcom.2024.174935
中图分类号：
学科分类号：
摘要：
In this study, the incorporation of alumina (Al2O3) and molybdenum disulfide (MoS2) in Aluminium (Al) was successfully fabricated through shroud plasma spray. This strategic incorporation of MoS2 and Al2O3 effectively fills voids, leading to a remarkable reduction in inherent porosity within the aluminium coating, achieving an impressive ∼76.54 % reduction. These composite coatings exhibited outstanding hydrophobicity (contact angle ∼119°), signifying remarkable water repellency and anti-corrosion properties compared to bare aluminium (contact angle ∼81.7°). During the electrochemical corrosion test, the corrosion rates (CR) of Al coating (CR = 9.14 mpy) was notably around 23 times higher compared to MoS2 and Al2O3 reinforced aluminium composite coating (CR = 0.372 mpy) in a 3.5 wt % NaCl electrolyte. The subsequent post-corrosion analysis further confirmed the composite coating's efficiency in mitigating the impact of corrosive salts, underlining the effectiveness of the hybrid coating in combating corrosion attacks. A corrosion behaviour prediction model was established based on computational and experimental data. © 2024 Elsevier B.V.
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  • [1] Shadakshari R., Niranjan H.B., Pakkirappa H., Study of corrosion behaviour of Al2024 nanocomposite reinforced with MWCNTs, Mater. Today Proc., 62, pp. 1226-1232, (2022)
  • [2] Kumar A., Malik G., Chandra R., Mulik R.S., Sputter-grown hierarchical nitride (TiN & h-BN) coatings on BN nanoplates reinforced Al7079 alloy with improved corrosion resistance, Surf. Coat. Technol., 432, (2022)
  • [3] Verma P.K., Singh A., Mechanical and dry sliding tribological characteristics of aluminium matrix composite reinforced with high entropy alloy particles, Tribol. Int., 191, (2024)
  • [4] Pardo A., Merino M.C., Merino S., Viejo F., Carboneras M., Arrabal R., Influence of reinforcement proportion and matrix composition on pitting corrosion behaviour of cast aluminium matrix composites (A3xx.x/SiCp), Corros. Sci., 47, pp. 1750-1764, (2005)
  • [5] Yang Y., Yin B., Shang Y., Wang X., Chen J., Preparation and characterization of novel TiB2-12(Fe-Co-Cr-Ni) cermets and their corrosion resistance in molten aluminum, Corros. Sci., 190, (2021)
  • [6] Ravnikar D., Rajamure R.S., Trdan U., Dahotre N.B., Grum J., Electrochemical and DFT studies of laser-alloyed TiB2/TiC/Al coatings on aluminium alloy, Corros. Sci., 136, pp. 18-27, (2018)
  • [7] Peng Y., Huang B., Zhong Y., Su C., Tao Z., Rong X., Li Z., Tang H., Electrochemical corrosion behavior of 6061 Al alloy under high rotating speed submerged friction stir processing, Corros. Sci., 215, (2023)
  • [8] Chen S.-Y., Huang C.-Y., Lin C.-S., Microstructure inhomogeneity of the constituent particles of 7075-T6 aluminum alloy after alkaline cleaning and desmutting, Corros. Sci., 184, (2021)
  • [9] Manikandan R., Arjunan T.V., Nath O. P A.R., Studies on micro structural characteristics, mechanical and tribological behaviours of boron carbide and cow dung ash reinforced aluminium (Al 7075) hybrid metal matrix composite, Compos. B Eng., 183, (2020)
  • [10] Maji P., Nath R.K., Paul P., Bhogendro Meitei R.K., Ghosh S.K., Effect of processing speed on wear and corrosion behavior of novel MoS2 and CeO2 reinforced hybrid aluminum matrix composites fabricated by friction stir processing, J. Manuf. Process., 69, pp. 1-11, (2021)
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