A critical appraisal of the logarithmic rate law in thin-film formation during oxidation of copper and its alloys

Roy, Sunanda; Sircar, S. C.

doi:10.1007/bf00603754

Cited by 21 publications

(7 citation statements)

References 15 publications

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“…growth of thickness of the oxide as a function of time, and they are summarised in Fig 11. A number of theories have been proposed [277][278][279][280] , mostly based on the Cabrera and Mott 281 theory and they postulate that, under the assumption of uniform epitaxial growth, the thickness of a metal oxide increases following an inverse logarithmic rate law for very thin films (up to 7.3 nm for Cu) and a cubic law for thicker films (up to 1.5 µm). A number of works 228,274,282,283 find qualitative agreement with the Cabrera-Mott theory, however linear oxide growth has been observed in other studies 263,284,285 , as well as power (n < 1) 286 or parabolic law 287 .…”

Section: Long-term Copper Oxidationmentioning

confidence: 76%

Atomistic details of oxide surfaces and surface oxidation: the example of copper and its oxides

Gattinoni

Michaelides

2015

Surface Science Reports

280

258

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The oxidation and corrosion of metals are fundamental problems in materials science and technology that have been studied using a large variety of experimental and computational techniques. Here we review some of the recent studies that have led to significant advances in our atomic-level understanding of copper oxide, one of the most studied and better understood metal oxides. We show that a good atomistic understanding of the physical characteristics of cuprous (Cu 2 O) and cupric (CuO) oxide and of some key processes of their formation has been obtained. Indeed, the growth of the oxide has been proven to be epitaxial with the surface and to proceed, in most cases, through the formation of oxide nano-islands which, with continuous oxygen exposure, grow and eventually coalesce. We also show how electronic structure calculations have become increasingly useful in helping to characterise the structures and energetics of various Cu oxide surfaces. However a number of challenges remain. For example, it is not clear under which conditions the oxidation of copper in air at room temperature (known as native oxidation) leads to the formation of a cuprous oxide film only, or also of a cupric overlayer. Moreover, the atomistic details of the nucleation of the oxide islands are still unknown. We close our review with a perspective on future work and discuss how recent advances in experimental techniques, bringing greater temporal and spatial resolution, along with improvements in the accuracy, realism and timescales achievable with computational approaches make it possible for these questions to be answered in the near future.

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Section: Long-term Copper Oxidationmentioning

confidence: 76%

Atomistic details of oxide surfaces and surface oxidation: the example of copper and its oxides

Gattinoni

Michaelides

2015

Surface Science Reports

280

258

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“…The first stage of the oxygen chemisorption on the metal surface has been a subject of surface science community and well covered by numerous studies in metals, in which most studies focused on the oxygen adsorption induced surface instabilities and structural transitions [73,134,135] . Meanwhile, the theory about the growth of uniform oxide phase after developing a continuous of oxide thin films, namely the later stage of oxidation, has been also well established in the classical oxidation field [136], such as the Cabrera-Mott law [28,137,138]. However, the information for the transient oxidation stage, i.e., the nucleation and growth to the coalescence of the oxide island is much less, because in situ characterization of the structural and compositional evolution in this regime is inaccessible by either the surface science techniques such as XPS, STM or other methods used to monitor the kinetics of the bulk oxidation, such as TGA.…”

Section: Oxidation Of Copper Alloysmentioning

confidence: 99%

Early and transient stages of Cu oxidation: Atomistic insights from theoretical simulations and in situ experiments

et al. 2016

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Understanding of metal oxidation is critical to corrosion control, catalysis synthesis, and advanced materials engineering. Although, metal oxidation process is rather complicated, different processes, many of them coupled, are involved from the onset of reaction. Since first introduced, there has been great success in applying heteroepitaxial theory to the oxide growth on metal surface as demonstrated in the Cu oxidation experiments. In this paper, we review the recent progress in experimental findings on Cu oxidation as well as the advances in the theoretical simulations of the Cu oxidation process. We focus on the effects of defects such as step edges, present on realistic metal surfaces, on the oxide growth dynamics. We show that the surface steps can change the mass transport of both Cu and O atoms during the oxide growth, and ultimately lead to the formation of different oxide morphology. We also review the oxidation of Cu alloys and explore the effect of secondary element to the oxide growth on Cu surface. From the review of the work on Cu oxidation, we demonstrate the correlation of theoretical simulations at multiple scales with various experimental techniques.

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“…From a basic point of view, the fact that copper is an easily oxidized noble metal with the typical strong tendency for diffusion creates a strong incentive for careful studies of the oxidation mechanism, rate laws, temperature dependence, and so on. The literature on the oxidation of copper is therefore very rich [25][26][27][28]. Copper is also a suitable metal for the study of laser-oxidation techniques [29,30].…”

mentioning

confidence: 99%

Copper Oxides (Cu2O, CuO)

Ribbing

Roos

1998

Handbook of Optical Constants of Solids

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A critical appraisal of the logarithmic rate law in thin-film formation during oxidation of copper and its alloys

Cited by 21 publications

References 15 publications

Atomistic details of oxide surfaces and surface oxidation: the example of copper and its oxides

Atomistic details of oxide surfaces and surface oxidation: the example of copper and its oxides

Early and transient stages of Cu oxidation: Atomistic insights from theoretical simulations and in situ experiments

Copper Oxides (Cu2O, CuO)

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