Corrosion of nickel aluminide in H2/H2S Gas mixtures.

• Autorzy: Godlewska, E. , Żurek, Z.
• Konferencja: AMT'98 XVth Physical Metallurgy and Materials Science Conference 'Advanced materials & technologies' 17-21 May, 1998, Kraków-Krynica, Poland.
• Języki publikacji: EN

Abstrakty

EN

Intermetallic compound beta-NiAl was sulphidized in H2/H2S mixtures with sulphur partial pressures raised to a -5th power Pa - 1 Pa at temperatures 1173 and 1273 K. The sulphidation runs, followed thermogravimetrically, were approximately parabolic. The calculated parabolic rate constants were very low and slightly increased with temperature and partial pressure of sulphur. The reaction products were examined by means of X-ray diffraction (XRD), energy dispersive X-ray (EDX) analyses and scanning electron microscopy (SEM). Aluminium sulphide and nickel-aluminium sulphospinel were predominant scale constituents in the applied experimental conditions. The scales were very thin and flaky. Generally two scale layers could be distinguished, the inner one was compact and outer one was discontinuous and consisted of needle-like or plate-like crystals. There was no evidence of internal sulphidation.

Słowa kluczowe

PL

korozja; związek międzymetaliczny; nikiel; aluminium; siarka; metal topiony w próżni; topienie łukiem elektrycznym; nasiarczanie; spinel siarkowy

EN

corrosion; intermetallic compounds; nickel; aluminium; sulphur; vacuum melting metal; arc melting; sulphidation; sulphospinel

• Czasopismo: Inżynieria Materiałowa
• Rocznik: 1998
• Tom: R. XIX, nr 4
• Strony: 933-936
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Godlewska, E.

• Department of Solid State Chemistry, University of Mining and Metallurgy, Kraków, Poland

autor

Żurek, Z.

• Institute of Inorganic Chemistry, Technological University of Cracow, Kraków, Poland

• University of Mining and Metallurgy, Department of Solid State Chemistry

Bibliografia

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