Use of corrosion-resistant plasma-sprayed coatings in diesel engines
| Autor: | P. Fartum, I. Kvernes |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
inorganic chemicals
Thermal shock Materials science Alloy Metallurgy technology industry and agriculture Metals and Alloys Surfaces and Interfaces engineering.material Combustion Surfaces Coatings and Films Electronic Optical and Magnetic Materials Corrosion law.invention Piston Diesel fuel Coating law Materials Chemistry engineering Cubic zirconia Composite material |
| Zdroj: | Thin Solid Films. 53:259-269 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/0040-6090(78)90045-7 |
| Popis: | The aim of this investigation was to study corrosion and thermal shock resistance and thermal barriers to be used on heat-loaded parts in diesel engines. The coatings which were tested were well bonded to the base material. The corrosion rates of these coatings were somewhat different however. A nickel-chromium-aluminum-yttrium alloy proved to be the best alloy coating as far as corrosion resistance was concwrned. A nickel-chromium-aluminum coating with minor additions of oxides showed approximately the same corrosion rate as the pure alloy coating. Coatings of the same type of alloy but with an intermediate layer of chromium and a top coat of yttrium-stabilized zirconia showed no signs of corrosion or cracks even after 120 h of combustion rig testing. A detailed discussion of the results from tests of coated piston crowns and valves in ship engines in service is presented. The test periods were up to 30 000 h for piston crowns and up to 5000 h for valves. |
| Databáze: | OpenAIRE |
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