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| Content Provider | Springer Nature Link |
|---|---|
| Author | Sidhu, H. S. Sidhu, B. S. Prakash, S. |
| Copyright Year | 2007 |
| Abstract | Cr$_{3}$C$_{2}$-NiCr, NiCr, WC-Co and Stellite-6 alloy coatings were sprayed on ASTM SA213-T11 steel using the HVOF process. Liquid petroleum gas was used as the fuel gas. Hot corrosion studies were conducted on the uncoated as well as HVOF sprayed specimens after exposure to molten salt at 900 °C under cyclic conditions. The thermo-gravimetric technique was used to establish the kinetics of corrosion. XRD, SEM/EDAX and EPMA techniques were used to analyze the corrosion products. All these overlay coatings showed a better resistance to hot corrosion as compared to that of uncoated steel. NiCr Coating was found to be most protective followed by the Cr$_{3}$C$_{2}$-NiCr coating. WC-Co coating was least effective to protect the substrate steel. It is concluded that the formation of Cr$_{2}$O$_{3, }$NiO, NiCr$_{2}$O$_{4}$, and CoO in the coatings may contribute to the development of a better hot-corrosion resistance. The uncoated steel suffered corrosion in the form of intense spalling and peeling of the scale, which may be due to the formation of unprotective Fe$_{2}$O$_{3 }$oxide scale. |
| Starting Page | 349 |
| Ending Page | 354 |
| Page Count | 6 |
| File Format | |
| ISSN | 10599630 |
| Journal | Journal of Thermal Spray Technology |
| Volume Number | 16 |
| Issue Number | 3 |
| e-ISSN | 15441016 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2007-07-28 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | coating-substrate interaction corrosion of HVOF coatings HVOF coatings Analytical Chemistry Operating Procedures, Materials Treatment Characterization and Evaluation of Materials Materials Science Tribology, Corrosion and Coatings Surfaces and Interfaces, Thin Films |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Materials Chemistry Condensed Matter Physics |
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