Oxide Free Wire Arc Sprayed Coatings: An Avenue to Enhanced Adhesive Tensile Strength

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Original languageEnglish
Article number684
Number of pages18
JournalMetals
Volume12
Issue number4
Early online date16 Apr 2022
Publication statusPublished - Apr 2022

Abstract

Conventionally, thermal spraying processes are almost exclusively carried out in an air atmosphere. This results in oxidation of the particles upon thermal spraying, and thus, the interfaces of the splats within the coating are oxidized as well. Hence, a full material bond strength cannot be established. To overcome this issue, a mixture of monosilane and nitrogen was employed in the present study as the atomising and environment gas. With this approach, an oxygen partial pressure corresponding to an extreme-high vacuum was established in the environment and oxide-free coatings could be realized. It is shown that the oxide-free particles have an improved substrate wetting behaviour, which drastically increases the adhesive tensile strength of the wire arc sprayed copper coatings. Moreover, the altered deposition conditions also led to a significant reduction of the coating porosity.

Keywords

    arc spraying, bonding mechanism, oxygen-free environment

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Cite this

Oxide Free Wire Arc Sprayed Coatings: An Avenue to Enhanced Adhesive Tensile Strength. / Rodriguez Diaz, Manuel; Szafarska, Maik; Gustus, René et al.
In: Metals, Vol. 12, No. 4, 684, 04.2022.

Research output: Contribution to journalReview articleResearchpeer review

Rodriguez Diaz M, Szafarska M, Gustus R, Möhwald K, Maier HJ. Oxide Free Wire Arc Sprayed Coatings: An Avenue to Enhanced Adhesive Tensile Strength. Metals. 2022 Apr;12(4):684. Epub 2022 Apr 16. doi: 10.3390/met12040684
Rodriguez Diaz, Manuel ; Szafarska, Maik ; Gustus, René et al. / Oxide Free Wire Arc Sprayed Coatings : An Avenue to Enhanced Adhesive Tensile Strength. In: Metals. 2022 ; Vol. 12, No. 4.
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title = "Oxide Free Wire Arc Sprayed Coatings: An Avenue to Enhanced Adhesive Tensile Strength",
abstract = "Conventionally, thermal spraying processes are almost exclusively carried out in an air atmosphere. This results in oxidation of the particles upon thermal spraying, and thus, the interfaces of the splats within the coating are oxidized as well. Hence, a full material bond strength cannot be established. To overcome this issue, a mixture of monosilane and nitrogen was employed in the present study as the atomising and environment gas. With this approach, an oxygen partial pressure corresponding to an extreme-high vacuum was established in the environment and oxide-free coatings could be realized. It is shown that the oxide-free particles have an improved substrate wetting behaviour, which drastically increases the adhesive tensile strength of the wire arc sprayed copper coatings. Moreover, the altered deposition conditions also led to a significant reduction of the coating porosity.",
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T2 - An Avenue to Enhanced Adhesive Tensile Strength

AU - Rodriguez Diaz, Manuel

AU - Szafarska, Maik

AU - Gustus, René

AU - Möhwald, Kai

AU - Maier, Hans Jürgen

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