On the coupled growth of oxide phases during internal oxidation of Ag–Sn–Bi alloys
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Gunther Wiehl
Abstract
Internal oxidation experiments using two Ag–Sn–Bi alloys with Bi contents of 2.6 wt.% and 5.0 wt.% were carried out. The presence and spatial distribution of Bi2O3, SnO2 and Bi2Sn2O7 in the oxidized microstructure was characterized using a field emission gun secondary electron microscope, energy dispersive X-ray analysis and X-ray diffraction techniques. It is shown that the addition of Bi prevents both external oxidation and internal oxide bands in Ag–Sn alloys with Sn content above 4 wt.%. Conditions are defined under which these alloys develop instabilities at the internal oxidation front. A result of the unstable growth of the reaction front is a dendritic morphology consisting of different oxide phases. Coupled growth of Bi2Sn2O7 and SnO2 inside the dendrites determines the local arrangement and distribution of the phases.
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© 2012, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Free-surface enhanced continuum model predicts size-effect for pillar compression at micro- and nano-scale
- Modelling of microstructural evolution on complex paths of large plastic deformation
- Melting temperature of metallic nanoparticles embedded in a rigid matrix
- On the coupled growth of oxide phases during internal oxidation of Ag–Sn–Bi alloys
- Phase diagram of the Sb–Te–I system and thermodynamic properties of SbTeI
- Pressureless co-sintering behaviour of a steel/cemented carbide component: model bimaterial
- Rafting structure formation during solution treatment in a nickel-based superalloy
- A model to calculate the viscosity of silicate melts
- Prediction of glass transition temperatures of aromatic heterocyclic polymers
- Relationship between the γ and some parameters of Fe-based bulk metallic glasses
- Growth of rare-earth zirconates-based pyrochlore buffer layers on YSZ for YBCO-coated conductors via chemical solution deposition
- Preparation and characterization of low temperature sintering nanocrystalline TiO2 prepared via the sol-gel method using titanium(IV) butoxide applicable to flexible dye sensitized solar cells
- Effects of preparation methods on color properties of ZnO-based nano-crystalline green pigments
- Effect of reaction media on the formation of CdS nanorods
- Effect of titanium addition on structure and properties of the as-cast high Cr–Mo white iron
- Effect of welding sequence on residual stress distributions in GTA welding of AA5251 plate
- Electrochemical machining of Al/15% SiCP composites through a response surface methodology-based approach
- Effects of nanoclay on rutting and fatigue resistance of bitumen binder
- DGM News
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Free-surface enhanced continuum model predicts size-effect for pillar compression at micro- and nano-scale
- Modelling of microstructural evolution on complex paths of large plastic deformation
- Melting temperature of metallic nanoparticles embedded in a rigid matrix
- On the coupled growth of oxide phases during internal oxidation of Ag–Sn–Bi alloys
- Phase diagram of the Sb–Te–I system and thermodynamic properties of SbTeI
- Pressureless co-sintering behaviour of a steel/cemented carbide component: model bimaterial
- Rafting structure formation during solution treatment in a nickel-based superalloy
- A model to calculate the viscosity of silicate melts
- Prediction of glass transition temperatures of aromatic heterocyclic polymers
- Relationship between the γ and some parameters of Fe-based bulk metallic glasses
- Growth of rare-earth zirconates-based pyrochlore buffer layers on YSZ for YBCO-coated conductors via chemical solution deposition
- Preparation and characterization of low temperature sintering nanocrystalline TiO2 prepared via the sol-gel method using titanium(IV) butoxide applicable to flexible dye sensitized solar cells
- Effects of preparation methods on color properties of ZnO-based nano-crystalline green pigments
- Effect of reaction media on the formation of CdS nanorods
- Effect of titanium addition on structure and properties of the as-cast high Cr–Mo white iron
- Effect of welding sequence on residual stress distributions in GTA welding of AA5251 plate
- Electrochemical machining of Al/15% SiCP composites through a response surface methodology-based approach
- Effects of nanoclay on rutting and fatigue resistance of bitumen binder
- DGM News
- DGM News
