High temperature corrosion of the cobalt base clad layers

• Autorzy: Smoleńska H.
• Języki publikacji: EN

Abstrakty

EN

Cobalt base clad layer underwent oxidation at 650° C and 750° C and corrosion in exhaust gases. The oxidation processes were run in two different ways; isothermal oxidation for 100 hours and cyc1ic oxidation for 200 hours. Corrosion in exhaust gases were run in a cyclic way for two month and about 200 hours at 6500 C. This clads were produced both laser and PTA cladding techniques. Thermal stability and oxidation behavior of the c1ads at different temperatures and environment were investigated. It appeared that exhaust gases were less harmful for this alloys than oxidizing atmosphere. The influence of the oxidation conditions (isothermal or cyclic oxidation) was established. Generally, the clad layers demonstrated good corrosion property in both atmospheres. The morphology changes of the clads were insignificant and the tiny oxide layer on the surface were noticed. The clads hardness changes were observed.

Słowa kluczowe

EN

cobalt alloys; oxidation; microstructure

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2007
• Tom: Vol. 7, nr 2(12)
• Strony: 254--263
• Opis fizyczny: Bibliogr. 17 poz., rys.

Twórcy

autor

Smoleńska H.

• Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Materials Science and Engineering, Gdańsk, Poland

Bibliografia

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