Details
| Original language | English |
|---|---|
| Article number | 684 |
| Number of pages | 18 |
| Journal | Metals |
| Volume | 12 |
| Issue number | 4 |
| Early online date | 16 Apr 2022 |
| Publication status | Published - 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
ASJC Scopus subject areas
- Materials Science(all)
- Materials Science(all)
- Metals and Alloys
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In: Metals, Vol. 12, No. 4, 684, 04.2022.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - Oxide Free Wire Arc Sprayed Coatings
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
N1 - Funding Information: Funding: Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)— Project-ID 394,563,137—SFB 1368.
PY - 2022/4
Y1 - 2022/4
N2 - 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.
AB - 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.
KW - arc spraying
KW - bonding mechanism
KW - oxygen-free environment
UR - http://www.scopus.com/inward/record.url?scp=85128459709&partnerID=8YFLogxK
U2 - 10.3390/met12040684
DO - 10.3390/met12040684
M3 - Review article
AN - SCOPUS:85128459709
VL - 12
JO - Metals
JF - Metals
SN - 2075-4701
IS - 4
M1 - 684
ER -