Back to Search
Start Over
Penetration treatment of plasma spray SUS316L stainless steel coatings by molten MnO–SiO2 oxides
- Source :
- Applied Surface Science. 325:132-138
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- A study of the penetration treatment of plasma sprayed SUS316L stainless steel coatings by molten MnO–SiO 2 oxides with near-eutectic composition was performed. The penetration treatment was introduced at 1353 K for 5, 20, and 45 min, and the effectiveness of the penetration and the underlying mechanisms of interfacial reactions are discussed on the basis of structural observation (EPMA), high-temperature wetting measurements and further supported by a thermodynamic calculation and analysis. The results indicated that at 1353 K, the MnO–SiO 2 oxides could infiltrate into the stainless steel coating within a depth of approximately 100 μm within 5 min due to the very good wettability of the stainless steel coating by molten MnO–SiO 2 oxides. The oxide could further penetrate to the coating/substrate interface when the treatment was extended to 20 min. During the penetration into the coating, a reaction between the MnO–SiO 2 oxides and adjacent stainless steel particles occurred, which produced MnCr 2 O 4 crystalline particles characterized by a spinel structure. As a result, a variation of the MnO–SiO 2 oxides composition was observed.
- Subjects :
- Materials science
Metallurgy
Spinel
Oxide
General Physics and Astronomy
Surfaces and Interfaces
General Chemistry
Penetration (firestop)
Electron microprobe
engineering.material
Condensed Matter Physics
Surfaces, Coatings and Films
chemistry.chemical_compound
Coating
chemistry
Plasma sprayed
engineering
Wetting
Thermal spraying
Subjects
Details
- ISSN :
- 01694332
- Volume :
- 325
- Database :
- OpenAIRE
- Journal :
- Applied Surface Science
- Accession number :
- edsair.doi...........241b0420d222d6af976aed0ea0073591