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Optimization of Pulsed Laser Cladding for Reconditioning of Ni–Al–Bronze (NAB) Marine Propeller.

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Title: Optimization of Pulsed Laser Cladding for Reconditioning of Ni–Al–Bronze (NAB) Marine Propeller.
Authors: Iatan, George Ciprian1 (AUTHOR), Cuculea, Dan Cristian1 (AUTHOR), Ardelean, George1 (AUTHOR), Stanciu, Elena Manuela1 (AUTHOR), Pascu, Alexandru1 (AUTHOR) alexandru.pascu@unitbv.ro
Source: Materials (1996-1944). Sep2025, Vol. 18 Issue 18, p4301. 16p.
Subjects: Aluminum bronze, Propellers, Surfaces (Technology), Microhardness, Copper compounds, Corrosion resistance, Pulsed laser deposition
Abstract: The materials used in the marine environment are generally selected for their high performances in aggressive operational media. This is also the case for marine propellers, which are mainly manufactured from cast nickel–aluminum bronze (NAB), due to their favorable mechanical properties and corrosion resistance. This study is focused on maximizing the efficiency of pulsed laser cladding through coaxial powder feeding, aiming to develop it as a sustainable reconditioning method for NAB propellers. A pulsed-wave laser (Trumpf TruPulse 556) and a cladding head (Precitec WC 50) were used for cladding of CuNi-alloyed powder on an NAB substrate. One of the main challenges was the high reflectivity of the copper matrix, present in both the base material of the propeller and in the powder, which significantly reduces laser energy absorption. However, good-quality cladded layers were obtained by optimizing the process cladding parameters. The coatings were characterized by optical and scanning electron microscopy. Microhardness values indicated transition regions within the coating layer. The results demonstrate that laser cladding with pulsed lasers is an effective and promising surface engineering method for reconditioning of damaged marine propellers. The obtained results create a path for future research aimed at extending the service life of copper-based marine components. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI 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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DbLabel: Engineering Source
An: 188281853
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PubTypeId: academicJournal
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  Label: Title
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  Data: Optimization of Pulsed Laser Cladding for Reconditioning of Ni–Al–Bronze (NAB) Marine Propeller.
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Sep2025, Vol. 18 Issue 18, p4301. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Aluminum+bronze%22">Aluminum bronze</searchLink><br /><searchLink fieldCode="DE" term="%22Propellers%22">Propellers</searchLink><br /><searchLink fieldCode="DE" term="%22Surfaces+%28Technology%29%22">Surfaces (Technology)</searchLink><br /><searchLink fieldCode="DE" term="%22Microhardness%22">Microhardness</searchLink><br /><searchLink fieldCode="DE" term="%22Copper+compounds%22">Copper compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Corrosion+resistance%22">Corrosion resistance</searchLink><br /><searchLink fieldCode="DE" term="%22Pulsed+laser+deposition%22">Pulsed laser deposition</searchLink>
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  Data: The materials used in the marine environment are generally selected for their high performances in aggressive operational media. This is also the case for marine propellers, which are mainly manufactured from cast nickel–aluminum bronze (NAB), due to their favorable mechanical properties and corrosion resistance. This study is focused on maximizing the efficiency of pulsed laser cladding through coaxial powder feeding, aiming to develop it as a sustainable reconditioning method for NAB propellers. A pulsed-wave laser (Trumpf TruPulse 556) and a cladding head (Precitec WC 50) were used for cladding of CuNi-alloyed powder on an NAB substrate. One of the main challenges was the high reflectivity of the copper matrix, present in both the base material of the propeller and in the powder, which significantly reduces laser energy absorption. However, good-quality cladded layers were obtained by optimizing the process cladding parameters. The coatings were characterized by optical and scanning electron microscopy. Microhardness values indicated transition regions within the coating layer. The results demonstrate that laser cladding with pulsed lasers is an effective and promising surface engineering method for reconditioning of damaged marine propellers. The obtained results create a path for future research aimed at extending the service life of copper-based marine components. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI 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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RecordInfo BibRecord:
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        Value: 10.3390/ma18184301
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 16
        StartPage: 4301
    Subjects:
      – SubjectFull: Aluminum bronze
        Type: general
      – SubjectFull: Propellers
        Type: general
      – SubjectFull: Surfaces (Technology)
        Type: general
      – SubjectFull: Microhardness
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      – SubjectFull: Copper compounds
        Type: general
      – SubjectFull: Corrosion resistance
        Type: general
      – SubjectFull: Pulsed laser deposition
        Type: general
    Titles:
      – TitleFull: Optimization of Pulsed Laser Cladding for Reconditioning of Ni–Al–Bronze (NAB) Marine Propeller.
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            NameFull: Iatan, George Ciprian
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            NameFull: Cuculea, Dan Cristian
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            NameFull: Ardelean, George
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            NameFull: Stanciu, Elena Manuela
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            NameFull: Pascu, Alexandru
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            – D: 15
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
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              Value: 19961944
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              Value: 18
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              Value: 18
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