The kinetics and the mechanism of corrosion of the TiAl, TiAlNb and TiAlAg alloys in the SO2 atmosphere
Creators
- 1. Akademia Akademia Gorniczo-Hutnicza, Wydzial Inzynierii Materialowej i Ceramiki, Katedra Fizykochemii Ciala Stalego, Cracow (Poland)
- 2. Politechnika Krakowska, Wydzial Inzynierii i Technologii Chemicznej, Cracow (Poland)
Description
In the present paper the high temperature oxidation and sulfidation corrosion of binary TiAl and ternary Ti-49Al-2Ag and Ti-49Al-2Nb (at.%) intermetallic alloys was studied in SO2 atmosphere at temperature of 1173 K. Simultaneous oxidation and sulfidation of the above alloys followed the parabolic paralinear rate law depending on the time of reaction. In the case of Ti-49Al-2Ag alloy the oxidation kinetics was much faster in comparison with other alloy compositions, caused probably by an Al-Ag liquid phase formation. A significant influence of Ag and Nb additions in Ti-Al alloy on the microstructure and the chemical composition of the former sulfide scales and alloy surface layers was observed and discussed in terms of the corrosion behaviour during oxidation process in the atmosphere containing oxygen and sulphur. (author)
Additional details
Additional titles
- Original title (Polish)
- Kinetyka i mechanizm korozji stopow TiAl, TiAlNb i TiAlAg w atmosferze SO
Publishing Information
- Journal Title
- Prace Komisji Nauk Ceramicznych. Ceramika
- Journal Volume
- 80
- Journal Page Range
- p. 881-886
- ISSN
- 0860-3340
Conference
- Title
- Advances in the Technology of Ceramics, Glass and Mineral Binding Materials
- Original Conference Title
- Postepy Technologii Ceramiki, Szkla i Budowlanych Materialow Wiazacych
- Dates
- 25-28 Sep 2003
- Place
- Zakopane (Poland)
INIS
- Country of Publication
- Poland
- Country of Input or Organization
- Poland
- INIS RN
- 35084129
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALUMINIUM ALLOYS; CHEMICAL COMPOSITION; CORROSION; MICROSTRUCTURE; NIOBIUM ALLOYS; OXIDATION; REACTION KINETICS; SCANNING ELECTRON MICROSCOPY; SILVER ALLOYS; SULFIDATION; SULFUR DIOXIDE; TITANIUM BASE ALLOYS; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; CHALCOGENIDES; CHEMICAL REACTIONS; COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; KINETICS; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; SCATTERING; SULFUR COMPOUNDS; SULFUR OXIDES; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS
Optional Information
- Contract/Grant/Project number
- MNiI grant no PBZ/KBN-04/T08/14-05
- Notes
- 6 refs, 4 figs, 1 tab.