Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOF
In this study, AlCoCrFeNi and AlCoCrFeNiMn0.5 high-entropy alloy coatings, denoted as the Mn0 and Mn0.5 coatings, respectively, were prepared on 304 stainless steel substrate via High velocity oxygen fuel (HVOF) and their wear and corrosion resistances were investigated. The results reveal that both...
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2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424028758 |
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| author | Dandan Zhang Qiang Li Chuntao Chang Guan Zhang Xu Ma Rongze Sun |
| author_facet | Dandan Zhang Qiang Li Chuntao Chang Guan Zhang Xu Ma Rongze Sun |
| author_sort | Dandan Zhang |
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| description | In this study, AlCoCrFeNi and AlCoCrFeNiMn0.5 high-entropy alloy coatings, denoted as the Mn0 and Mn0.5 coatings, respectively, were prepared on 304 stainless steel substrate via High velocity oxygen fuel (HVOF) and their wear and corrosion resistances were investigated. The results reveal that both the coatings consist of BCC and B2 phases, indicating that the Mn addition does not cause a phase transition for the present coatings. The coatings exhibit a low porosity of less than 1%, strong interlayer adhesion and no compositional segregation. The addition of Mn significantly increases the microhardness from 520 HV0.2 for the Mn0 coating to 617 HV0.2 for the Mn0.5 coating. The dry sliding wear test demonstrates that the Mn0.5 coating demonstrates superior wear resistance with a significantly lower average friction coefficient of 0.433 and wear rate of 9.7 × 10−5 mm3·N−1·m−1 compared to both the Mn0 coating and 304 stainless steel. The main wear mechanisms of the coatings were identified as abrasive, fatigue and adhesive wears. Meanwhile, compared to the Mn0 coating and 304 stainless steel, the Mn0.5 coating exhibits higher corrosion resistance in 3.5 wt% NaCl solution, with a lower self-corrosion current density (Icorr) of 5.992 × 10−7 A·cm−2 and enhanced pitting resistance, evidenced by a larger pitting potential (Epit) and a lower passivation current density (Ipass) of 1.523 × 10−6 A·cm−2. XPS analysis shows that the Mn addition leads to an increased presence of Cr2O3 in the passivation film on the surface of the coatings, which was more resistant to Cl− corrosion and facilitates a dense and stable passivation film compared to other oxides like Al2O3, thereby improving the corrosion resistance of the coatings. The present study highlights the beneficial impact of Mn addition on the wear and corrosion performance of AlCoCrFeNi high-entropy alloy coatings. |
| format | Article |
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| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-93b947142ef64fb1bd226986fedec7032025-01-19T06:25:18ZengElsevierJournal of Materials Research and Technology2238-78542025-01-0134627638Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOFDandan Zhang0Qiang Li1Chuntao Chang2Guan Zhang3Xu Ma4Rongze Sun5School of Material Science and Engineering, Xinjiang University, Urumqi, Xinjiang, 830046, People's Republic of ChinaSchool of Material Science and Engineering, Xinjiang University, Urumqi, Xinjiang, 830046, People's Republic of China; Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, Xinjiang, 830046, People's Republic of China; Corresponding author. School of Material Science and Engineering, Xinjiang University, Urumqi, Xinjiang 830046, People's Republic of China.School of Mechanical Engineering, Dong Guan University of Technology, Dong Guan, 523808, People's Republic of China; Corresponding author.School of Material Science and Engineering, Xinjiang University, Urumqi, Xinjiang, 830046, People's Republic of ChinaSchool of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang, 830046, People's Republic of China; Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, Xinjiang, 830046, People's Republic of ChinaSchool of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang, 830046, People's Republic of ChinaIn this study, AlCoCrFeNi and AlCoCrFeNiMn0.5 high-entropy alloy coatings, denoted as the Mn0 and Mn0.5 coatings, respectively, were prepared on 304 stainless steel substrate via High velocity oxygen fuel (HVOF) and their wear and corrosion resistances were investigated. The results reveal that both the coatings consist of BCC and B2 phases, indicating that the Mn addition does not cause a phase transition for the present coatings. The coatings exhibit a low porosity of less than 1%, strong interlayer adhesion and no compositional segregation. The addition of Mn significantly increases the microhardness from 520 HV0.2 for the Mn0 coating to 617 HV0.2 for the Mn0.5 coating. The dry sliding wear test demonstrates that the Mn0.5 coating demonstrates superior wear resistance with a significantly lower average friction coefficient of 0.433 and wear rate of 9.7 × 10−5 mm3·N−1·m−1 compared to both the Mn0 coating and 304 stainless steel. The main wear mechanisms of the coatings were identified as abrasive, fatigue and adhesive wears. Meanwhile, compared to the Mn0 coating and 304 stainless steel, the Mn0.5 coating exhibits higher corrosion resistance in 3.5 wt% NaCl solution, with a lower self-corrosion current density (Icorr) of 5.992 × 10−7 A·cm−2 and enhanced pitting resistance, evidenced by a larger pitting potential (Epit) and a lower passivation current density (Ipass) of 1.523 × 10−6 A·cm−2. XPS analysis shows that the Mn addition leads to an increased presence of Cr2O3 in the passivation film on the surface of the coatings, which was more resistant to Cl− corrosion and facilitates a dense and stable passivation film compared to other oxides like Al2O3, thereby improving the corrosion resistance of the coatings. The present study highlights the beneficial impact of Mn addition on the wear and corrosion performance of AlCoCrFeNi high-entropy alloy coatings.http://www.sciencedirect.com/science/article/pii/S2238785424028758AlCoCrFeNiCoatingsMn additionWear resistanceCorrosion resistance |
| spellingShingle | Dandan Zhang Qiang Li Chuntao Chang Guan Zhang Xu Ma Rongze Sun Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOF Journal of Materials Research and Technology AlCoCrFeNi Coatings Mn addition Wear resistance Corrosion resistance |
| title | Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOF |
| title_full | Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOF |
| title_fullStr | Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOF |
| title_full_unstemmed | Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOF |
| title_short | Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOF |
| title_sort | effects of mn addition on wear and corrosion resistances of alcocrfeni high entropy alloy coating sprayed by hvof |
| topic | AlCoCrFeNi Coatings Mn addition Wear resistance Corrosion resistance |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424028758 |
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