Journal
SURFACE & COATINGS TECHNOLOGY
Volume 438, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2022.128399
Keywords
Mg-Li alloy; Microarc oxidation coating; B 4 C particle; C particle; Wear resistance
Funding
- Natural Science Foundation of China [51871068, 51971071, 52011530025, U21A2049]
- Domain Foundation of Equipment Advance Research of 13th Five-year Plan [61409220118]
- National Key Research and Development Program [2021YFE0103200]
- Zhejiang Province Key Research and Development Program [2021C01086]
- Open Foundation of Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education [HEU10202104]
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Incorporating B4C and C particles into the microarc oxidation coatings on Mg-Li alloy improved the microstructure and properties of the coatings, leading to enhanced corrosion resistance and wear resistance.
Microarc oxidation coatings incorporated with B4C and C particles were prepared on Mg-Li alloy. The influence of combined B4C/C particles on the microstructure and properties of microarc oxidation coatings was investigated. Results show that B4C and C particles are successfully integrated into the coating where B4C partially blocks the micropores and C particles form bulges on the surface. The composite B4C/C particles contribute to increasing the thickness and decreasing the porosity of the coating, thus maintaining the corrosion resistance together with a significant increase in the wear resistance of the coating. It is mainly attributed to the high hardness of B4C particles and the lubrication of C particles in the coating. The composite addition of particles to the microarc oxidation electrolyte is an effective method to enhance the coating properties.
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