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Microstructures and Properties of High Strength and Toughness Fe-Based Coatings Fabricated by Plasma Arc Deposition.

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Title: Microstructures and Properties of High Strength and Toughness Fe-Based Coatings Fabricated by Plasma Arc Deposition.
Authors: Zhang, Jian1 (AUTHOR) zj4343@163.com, Chen, Hongxuan1 (AUTHOR), Pang, Xiaotong1 (AUTHOR) pangxt@csust.edu.cn, Liu, Shilong2 (AUTHOR), Misra, R. D. K.3 (AUTHOR), Sun, Junhao4 (AUTHOR)
Source: Journal of Thermal Spray Technology. Jun2025, Vol. 34 Issue 5, p1941-1956. 16p.
Subjects: Eutectic structure, Plasma arcs, Plasma deposition, Fracture toughness, Wear resistance
Abstract: Currently, surface coatings on agricultural machinery are crucial for extending service life. However, achieving coating strength and toughness remains a challenge. In this paper, two types of high-hardness iron-based coatings, referred as S1 and S2, were prepared by modulating the Mo/V ratio in the Fe-C-V-Mo-B system, and their microstructural evolution and property changes were investigated. The results show that the S1 coating primarily consist of martensitic matrix, spherical VC, blocky Mo2B, and a small amount of skeleton-like Mo2B. In contrast, the S2 coating consist of martensitic matrix, petal-like VC, and skeleton-like Mo2B. Compared with S1, the VC volume fraction in S2 increases by 6.5%, and the Mo2B volume fraction increases by 16.3%. The average microhardness of S1 and S2 coatings are 737 HV0.5 and 954 HV0.5, respectively, indicating that the S2 coating exhibits a 22.7% higher microhardness compared with S1. The average friction coefficients of S1 and S2 coatings are 0.434 and 0.398, respectively. Furthermore, the wear loss of S2 coating is approximately half that of S1. The fracture toughness of S1 and S2 coatings are 51.9 MPa·m1/2 and 51.7MPa·m1/2, respectively. Fracture analysis reveals that the skeleton-like eutectic structure in S2 can deflect cracks generated by impact, increase the length of propagation path, and improve the toughness of coating. It allows S2 coating to achieve high hardness and wear resistance, while maintaining toughness comparable to S1 coating. This study provides a theoretical basis for the design and development of iron-based coatings with high hardness, high abrasion resistance, and impact resistance for agricultural machinery. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Thermal Spray Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: Microstructures and Properties of High Strength and Toughness Fe-Based Coatings Fabricated by Plasma Arc Deposition.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Jian%22">Zhang, Jian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zj4343@163.com</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Hongxuan%22">Chen, Hongxuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pang%2C+Xiaotong%22">Pang, Xiaotong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> pangxt@csust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Shilong%22">Liu, Shilong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Misra%2C+R%2E+D%2E+K%2E%22">Misra, R. D. K.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Junhao%22">Sun, Junhao</searchLink><relatesTo>4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Thermal+Spray+Technology%22">Journal of Thermal Spray Technology</searchLink>. Jun2025, Vol. 34 Issue 5, p1941-1956. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Eutectic+structure%22">Eutectic structure</searchLink><br /><searchLink fieldCode="DE" term="%22Plasma+arcs%22">Plasma arcs</searchLink><br /><searchLink fieldCode="DE" term="%22Plasma+deposition%22">Plasma deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+toughness%22">Fracture toughness</searchLink><br /><searchLink fieldCode="DE" term="%22Wear+resistance%22">Wear resistance</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Currently, surface coatings on agricultural machinery are crucial for extending service life. However, achieving coating strength and toughness remains a challenge. In this paper, two types of high-hardness iron-based coatings, referred as S1 and S2, were prepared by modulating the Mo/V ratio in the Fe-C-V-Mo-B system, and their microstructural evolution and property changes were investigated. The results show that the S1 coating primarily consist of martensitic matrix, spherical VC, blocky Mo2B, and a small amount of skeleton-like Mo2B. In contrast, the S2 coating consist of martensitic matrix, petal-like VC, and skeleton-like Mo2B. Compared with S1, the VC volume fraction in S2 increases by 6.5%, and the Mo2B volume fraction increases by 16.3%. The average microhardness of S1 and S2 coatings are 737 HV0.5 and 954 HV0.5, respectively, indicating that the S2 coating exhibits a 22.7% higher microhardness compared with S1. The average friction coefficients of S1 and S2 coatings are 0.434 and 0.398, respectively. Furthermore, the wear loss of S2 coating is approximately half that of S1. The fracture toughness of S1 and S2 coatings are 51.9 MPa·m1/2 and 51.7MPa·m1/2, respectively. Fracture analysis reveals that the skeleton-like eutectic structure in S2 can deflect cracks generated by impact, increase the length of propagation path, and improve the toughness of coating. It allows S2 coating to achieve high hardness and wear resistance, while maintaining toughness comparable to S1 coating. This study provides a theoretical basis for the design and development of iron-based coatings with high hardness, high abrasion resistance, and impact resistance for agricultural machinery. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Thermal Spray Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11666-025-01976-8
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      – Code: eng
        Text: English
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        PageCount: 16
        StartPage: 1941
    Subjects:
      – SubjectFull: Eutectic structure
        Type: general
      – SubjectFull: Plasma arcs
        Type: general
      – SubjectFull: Plasma deposition
        Type: general
      – SubjectFull: Fracture toughness
        Type: general
      – SubjectFull: Wear resistance
        Type: general
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      – TitleFull: Microstructures and Properties of High Strength and Toughness Fe-Based Coatings Fabricated by Plasma Arc Deposition.
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            NameFull: Zhang, Jian
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            NameFull: Chen, Hongxuan
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            NameFull: Liu, Shilong
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            – D: 01
              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
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