Szczegóły publikacji
Opis bibliograficzny
The new hybrid protective coating for hot corrosion applications / M. DANIELEWSKI, S. Środa, Z. Żurek, R. GAJERSKI, I. Lalak // W: BALTICA VI : life management and maintenance for power plants : [conference, Espoo 2004], Vol. 1. — [Espoo], Finland : VTT Technical Research Centre, 2004. — (VTT Symposium ; ISSN 0357-9387 ; 233). — S. 223–232. — Abstr.
Autorzy (5)
- AGHDanielewski Marek
- Środa S.
- Żurek Z.
- AGHGajerski Ryszard
- Lalak Ireneusz
Dane bibliometryczne
| ID BaDAP | 20573 |
|---|---|
| Data dodania do BaDAP | 2005-03-11 |
| Rok publikacji | 2004 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
| Czasopismo/seria | VTT Symposium |
Abstract
A new hybrid protective coating has been developed to extend the lifetime of power plant boiler water walls and other parts of the boiler affected by hot corrosion. The base layer of the coating (30-80 mum thickness) consists of nonorganic bounding agents and a specially processed Al filler. The top layer contains spherical and/or flake-like Al, Si and/or Al-Si fillers (25-60 mum thickness). The bonding is a mixture of organic resins. The coating has been tested using laboratory salt-recoat corrosion tests and cyclic-oxidation tests up to 2000 hours, mainly at the temperature range of 400-550degreesC. The best of the hybrid coating variants outperformed several commercial products at 500, 550 and 600degreesC. The first plant corrosion tests were started in Power Plant "Siekierki" in Poland in 2001. From that time several trial plant tests have been made to optimise the coating composition and the application process. The results of the laboratory scale and power plant tests show that the coating provides active chemical and passive mechanical protection of the outer metal surface. The coating limits access of the corrosive atmosphere to the base metal, protects against erosion and decreases the deposit/ash adhesion. The coating shows satisfactory oxidation resistance up to 500degreesC in oxidizing as well as in reducing atmospheres. Additionally, special application procedure provides protection in high humidity environments at room temperature. At present stage the hybrid coating has been tested in the corrosion laboratory at JRC IE Petten in several simulated combustion atmospheres to investigate aptitude for waste incinerator application.