Thermal oxidation of single-crystal aluminum at 550�C

Eldridge, Jeffrey I.; Hussey, R. J.; Mitchell, D. F.; Graham, M. J.

doi:10.1007/bf00659003

Cited by 56 publications

(31 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1,3,4,[6][7][8][9][17][18][19][20]38 In such a case the mismatch between the adjacent lattices of the two crystalline phases is accommodated by elastic deformation. Generally, the mismatch in the boundary is characterized by the mismatch values in two directions within the boundary.…”

Section: Mismatch Contribution To ͗M͘-͗mo X ͘ Interfacial Energymentioning

confidence: 99%

“…The crystalline oxide competing with the amorphous oxide ͕Al 2 O 3 ͖ of the same composition is ␥-Al 2 O 3 . 1,[17][18][19][20] First the difference in bulk, surface, and interfacial energies of the amorphous ͕Al 2 O 3 ͖ cell on the ͗Al͘ substrate and the corresponding crystalline ͗␥-Al 2 O 3 ͘ cell on the same substrate will be discussed. Then the stability of the oxide films is discussed as a function of growth temperature, oxide-film thickness, and crystallographic orientation of the ͗Al͘ substrate.…”

Section: Thermodynamics Of Amorphous and Crystalline Aluminum-oximentioning

confidence: 99%

“…In this case, the crystalline oxide ␥-Al 2 O 3 competes with the amorphous Al 2 O 3 oxide. 1,[17][18][19][20] The predictions, as obtained by application of the model to the Al-Al 2 O 3 system, are compared with experimental data obtained by transmission electron microscopy.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermodynamic stability of amorphous oxide films on metals: Application to aluminum oxide films on aluminum substrates

et al. 2000

View full text Add to dashboard Cite

It has been shown on a thermodynamic basis that an amorphous structure for an oxide film on its metal substrate can be more stable than the crystalline structure. The thermodynamic stability of a thin amorphous metal-oxide film on top of its single-crystal metal substrate has been modeled as a function of growth temperature, oxide-film thickness, and crystallographic orientation of the metal substrate. To this end, expressions have been derived for the estimation of the energies of the metal-substrate amorphous-oxide film interface and the metal-substrate crystalline-oxide film interface as a function of growth temperature, and crystallographic orientation of the substrate ͑including the effect of strain due to the lattice mismatch͒. It follows that, up to a certain critical thickness of the amorphous oxide film, the higher bulk Gibbs free energy of the amorphous oxide film, as compared to the corresponding crystalline oxide film, can be compensated for by the lower sum of the surface and interfacial energies. The predicted occurrence of an amorphous aluminum-oxide film on various crystallographic faces of aluminum agrees well with previous transmission electron microscopy observations.

show abstract

Section: Mismatch Contribution To ͗M͘-͗mo X ͘ Interfacial Energymentioning

confidence: 99%

Section: Thermodynamics Of Amorphous and Crystalline Aluminum-oximentioning

confidence: 99%

See 1 more Smart Citation

Thermodynamic stability of amorphous oxide films on metals: Application to aluminum oxide films on aluminum substrates

et al. 2000

View full text Add to dashboard Cite

show abstract

“…Several researchers have studied the thermal oxidation of aluminum and found that an air-formed oxide film develops when aluminum is heated in air or oxygen to a temperature above 723 K. An amorphous oxide film is formed initially and then -alumina crystals develop at the metal-oxide interface. [1][2][3][4] As the oxidation temperature increases, the crystallinealumina is gradually transformed from the amorphous aluminum oxide by the inward diffusion of oxygen.…”

Section: Introductionmentioning

confidence: 99%

Thermally-Formed Oxide on Aluminum and Magnesium

Shih

Liu

2006

Mater. Trans.

View full text Add to dashboard Cite

Pure aluminum and magnesium cube samples were heated at a specific temperature for a given time after being polished by abrasive papers. The amorphous layer that formed on the sample surface was transformed into a crystallized oxide film during the heating and holding period. We discuss how this thermally-formed oxide film progressively developed on the surface of the cubic samples. Gibbsite (Al(OH) 3 ) forms on pure aluminum during the initial stage of heating, after which it is then transformed to complex oxides, diaspore and -alumina. After an extended holding time at 883 K, the thermally-formed oxide film will be comprised of gibbsite, diaspore, -Al 2 O 3 and -alumina. This thermally-formed oxide film is compact and contains evenly-distributed microchannels. With pure magnesium, the transformation of periclase from brucite is associated with the formation of microcracks. In this study we use TGA (thermo-gravimetric analysis) to describe the progressive development of complex oxides and periclase films on pure Al and Mg respectively.

show abstract

“…26 Especially for aluminum, the crystallographic orientation has some influence on the occurrence of localized corrosion [27][28][29] and oxidation. [30][31][32] These reports show that the density of defect decreased in the order Al(111) > Al(110) > Al(100). The crystallographic orientation of electrodeosited Al has been studied about some of the solutions, AlCl 3 /1-Ethyl-3-methylimidazolium chloride, 33 AlCl 3 /1-butyl-3-methylimidazolium chloride, 34 and AlCl 3 /DMSO 2 .…”

Section: Introductionmentioning

confidence: 92%

Control of Crystallographic Orientation and Structural Characteristics for Electrodeposited Aluminum

et al. 2016

View full text Add to dashboard Cite

The effects of preparing condition on crystallographic orientation for electrodeposited aluminum from the plating solution with aluminum chloride (AlCl 3 ) and dimethyl sulfone (DMSO 2 ) were investigated. The molar ratio of DMSO 2 :AlCl 3 was controlled from 10:1 to 10:5. The temperature range of the solution was from 110 to 150°C. The current density was set from 300 to 600 A/m 2 . The crystallographic orientation of the samples was strongly influenced by the solution composition and temperature. The films from the solution with ratio of 10:3 exhibited the highly (200) preferred orientation. On the other hand, current density hardly affected the crystallographic orientation within our current density range. The crystallographic orientation is discussed by means of the Pangarov's model based on the two-dimensional nuclei theory.

show abstract

Thermal oxidation of single-crystal aluminum at 550�C

Cited by 56 publications

References 17 publications

Thermodynamic stability of amorphous oxide films on metals: Application to aluminum oxide films on aluminum substrates

Thermodynamic stability of amorphous oxide films on metals: Application to aluminum oxide films on aluminum substrates

Thermally-Formed Oxide on Aluminum and Magnesium

Control of Crystallographic Orientation and Structural Characteristics for Electrodeposited Aluminum

Contact Info

Product

Resources

About