Corrosion Resistance and Wear Properties of CoCrFeNiMn/TiC High-Entropy Alloy-Based Composite Coatings Prepared by Laser Cladding
CoCrFeNiMn high-entropy alloy (HEA) composite coatings with 0, 10, and 20 wt% TiC are synthesized through laser cladding technology, and their corrosion and wear resistance are systematically investigated. The X-ray diffraction (XRD) results show that with the addition of TiC, the phases of TiC and...
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2025-05-01
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| author | Qiang Zhan Fangyan Luo Jiang Huang Zhanshan Wang Bin Ma Chengpu Liu |
| author_facet | Qiang Zhan Fangyan Luo Jiang Huang Zhanshan Wang Bin Ma Chengpu Liu |
| author_sort | Qiang Zhan |
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| description | CoCrFeNiMn high-entropy alloy (HEA) composite coatings with 0, 10, and 20 wt% TiC are synthesized through laser cladding technology, and their corrosion and wear resistance are systematically investigated. The X-ray diffraction (XRD) results show that with the addition of TiC, the phases of TiC and M<sub>23</sub>C<sub>6</sub> are introduced, and lattice distortion occurs simultaneously (accompanied by the broadening and leftward shift of the main Face-Centered Cubic (FCC) peak). Scanning electron microscopy (SEM) reveals that the incompletely melted TiC particles in the coating (S2) are uniformly distributed in the matrix with 20 wt% TiC, while in the coating (S1) with 10 wt% TiC, due to gravitational sedimentation and decomposition during laser processing, the distribution of the reinforcing phase is insufficient. When rubbed against Si<sub>3</sub>N<sub>4</sub>, with the addition of TiC, S2 exhibits the lowest friction coefficient of 0.699 and wear volume of 0.0398 mm<sup>3</sup>. The corrosion resistance of S2 is more prominent in the simulated seawater (3.5 wt% NaCl). S2 shows the best corrosion resistance: it has the largest self-corrosion voltage (−0.425 V vs. SCE), the lowest self-corrosion current density (1.119 × 10<sup>−7</sup> A/cm<sup>2</sup>), and exhibits stable passivation behavior with a wide passivation region. Electrochemical impedance spectroscopy (EIS) confirms that its passivation film is denser. This study shows that the addition of 20 wt% TiC optimizes the microstructural homogeneity and synergistically enhances the mechanical strengthening and electrochemical stability of the coating, providing a new strategy for the making of HEA-based layers in harsh wear-corrosion coupling environments. |
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| publishDate | 2025-05-01 |
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| spelling | doaj-art-e2db77decf9f4dfa9d862b4dc2cdb3f52025-08-20T01:56:19ZengMDPI AGLubricants2075-44422025-05-0113521010.3390/lubricants13050210Corrosion Resistance and Wear Properties of CoCrFeNiMn/TiC High-Entropy Alloy-Based Composite Coatings Prepared by Laser CladdingQiang Zhan0Fangyan Luo1Jiang Huang2Zhanshan Wang3Bin Ma4Chengpu Liu5Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai 200092, ChinaSchool of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, ChinaSchool of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, ChinaInstitute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai 200092, ChinaInstitute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai 200092, ChinaState Key Laboratory of Ultra-Intense Laser Science and Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaCoCrFeNiMn high-entropy alloy (HEA) composite coatings with 0, 10, and 20 wt% TiC are synthesized through laser cladding technology, and their corrosion and wear resistance are systematically investigated. The X-ray diffraction (XRD) results show that with the addition of TiC, the phases of TiC and M<sub>23</sub>C<sub>6</sub> are introduced, and lattice distortion occurs simultaneously (accompanied by the broadening and leftward shift of the main Face-Centered Cubic (FCC) peak). Scanning electron microscopy (SEM) reveals that the incompletely melted TiC particles in the coating (S2) are uniformly distributed in the matrix with 20 wt% TiC, while in the coating (S1) with 10 wt% TiC, due to gravitational sedimentation and decomposition during laser processing, the distribution of the reinforcing phase is insufficient. When rubbed against Si<sub>3</sub>N<sub>4</sub>, with the addition of TiC, S2 exhibits the lowest friction coefficient of 0.699 and wear volume of 0.0398 mm<sup>3</sup>. The corrosion resistance of S2 is more prominent in the simulated seawater (3.5 wt% NaCl). S2 shows the best corrosion resistance: it has the largest self-corrosion voltage (−0.425 V vs. SCE), the lowest self-corrosion current density (1.119 × 10<sup>−7</sup> A/cm<sup>2</sup>), and exhibits stable passivation behavior with a wide passivation region. Electrochemical impedance spectroscopy (EIS) confirms that its passivation film is denser. This study shows that the addition of 20 wt% TiC optimizes the microstructural homogeneity and synergistically enhances the mechanical strengthening and electrochemical stability of the coating, providing a new strategy for the making of HEA-based layers in harsh wear-corrosion coupling environments.https://www.mdpi.com/2075-4442/13/5/210CoCrFeNiMn high-entropy alloysTiC powderslaser claddingceramics |
| spellingShingle | Qiang Zhan Fangyan Luo Jiang Huang Zhanshan Wang Bin Ma Chengpu Liu Corrosion Resistance and Wear Properties of CoCrFeNiMn/TiC High-Entropy Alloy-Based Composite Coatings Prepared by Laser Cladding Lubricants CoCrFeNiMn high-entropy alloys TiC powders laser cladding ceramics |
| title | Corrosion Resistance and Wear Properties of CoCrFeNiMn/TiC High-Entropy Alloy-Based Composite Coatings Prepared by Laser Cladding |
| title_full | Corrosion Resistance and Wear Properties of CoCrFeNiMn/TiC High-Entropy Alloy-Based Composite Coatings Prepared by Laser Cladding |
| title_fullStr | Corrosion Resistance and Wear Properties of CoCrFeNiMn/TiC High-Entropy Alloy-Based Composite Coatings Prepared by Laser Cladding |
| title_full_unstemmed | Corrosion Resistance and Wear Properties of CoCrFeNiMn/TiC High-Entropy Alloy-Based Composite Coatings Prepared by Laser Cladding |
| title_short | Corrosion Resistance and Wear Properties of CoCrFeNiMn/TiC High-Entropy Alloy-Based Composite Coatings Prepared by Laser Cladding |
| title_sort | corrosion resistance and wear properties of cocrfenimn tic high entropy alloy based composite coatings prepared by laser cladding |
| topic | CoCrFeNiMn high-entropy alloys TiC powders laser cladding ceramics |
| url | https://www.mdpi.com/2075-4442/13/5/210 |
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