Investigation of the oxidation behaviour of thin film and bulk copper

O’Reilly, Matthew; Jiang, Xuening; Beechinor, J.T.; Lynch, S.; NíDheasuna, C.; Patterson, J. C.; Crean, G.M.

doi:10.1016/0169-4332(95)00111-5

Cited by 90 publications

(56 citation statements)

References 6 publications

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“…This value is also close to that of the formation of CO 2 , i.e., reaction (11), so again this is the main final product formed from the fibers. The difference in the heats measured may arise from the mixed oxidation through Eqs.…”

Section: Effect Of Coatings On the Oxidation Of Carbon Fiberssupporting

confidence: 51%

“…The enthalpy change measured was -344 kJ/mol, suggesting that the formation of CO 2 , i.e., reaction (11), is the main oxidation mechanism.…”

Section: Effect Of Coatings On the Oxidation Of Carbon Fibersmentioning

confidence: 98%

“…The consequences of oxidation on the behavior of these copper and Ni-P coatings have been studied also [11,12], and for example, the results obtained in the case of Ni-P alloys show similarities with the mechanism observed for the oxidation of Ni-P powders [13,14]. In the case of carbon fibers with metallic coatings, there is interest in analyzing how the presence of the fiber modify the oxidation behavior of the coating, and inversly, how does the presence of the coating modify the oxidation of the fiber.…”

Section: Introductionmentioning

confidence: 99%

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Oxidation Mechanisms of Copper and Nickel Coated Carbon Fibers

2008

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Differential-Thermal Analysis (DTA) and X-ray diffraction analysis were applied to determine the mechanisms of high-temperature oxidation of copperand nickel-coated carbon fibers. Both kinds of coatings were deposited by electroless plating onto the fiber surface. The as-deposited copper film was crystalline, whereas the nickel coating consisted of an amorphous Ni-P alloy. Coated fibers were heated from room temperature to 900°C in air at 10°C min -1 . For the copper coating, the main oxidation product formed at low temperatures was Cu 2 O, while at higher temperatures was CuO. The crystallization of Ni-P took place at 280-360°C with the formation of Ni and Ni 3 P. The final compounds were NiO, Ni 2 P and Ni 3 (PO 4 ) 2 . After complete oxidation of the carbon fibers, copper and nickel-oxidized microtubes were obtained. Besides, while copper reduced the temperature of the fiber oxidation, nickel coatings increased the minimum temperature needed for this reaction.

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Section: Effect Of Coatings On the Oxidation Of Carbon Fiberssupporting

confidence: 51%

“…The enthalpy change measured was -344 kJ/mol, suggesting that the formation of CO 2 , i.e., reaction (11), is the main oxidation mechanism.…”

Section: Effect Of Coatings On the Oxidation Of Carbon Fibersmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Oxidation Mechanisms of Copper and Nickel Coated Carbon Fibers

2008

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“…Indeed, it was found that polycrystalline film oxidation kinetics is almost twice as slow as single crystal oxidation kinetics 285 . The oxidation temperature is another factor [288][289][290] . O'Reilly 289 et al found for a polycrystalline sample in dry synthetic air (O 2 /Ar mixture) that at temperatures between 250 and 500 • C the oxidation followed a cubic law, at 100 • C an inverse log rate and at 150 • C a linear growth rate.…”

Section: Long-term Copper Oxidationmentioning

confidence: 99%

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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“…This failure mechanism is generated at the TGO, the TGO/BC interface and the TBC. Studies shows that oxygen is transferred through ionic diffusion from the crystalline structure of ZrO 2 at the topcoat and penetration of gas through micro-cracks and porosities [9,10]. It has been proposed that these mechanism is facilitated mainly by the stress state arising from the residual compression in the TGO formed in service on bond coat which is the Al reservoir promoting α-alumina to form in preference to oxides [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

High Temperature Oxidation Resistance of Ni22Cr11Al Bond Coat Produced by Spark Plasma Sintering as Thermal Barrier Coatings

FIS¹,

PA²

2016

J Material Sci Eng

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Thermal barrier coating (TBC) system is used in both aero engines and other gas turbines offer oxidation protection to super alloy substrate component. In the present work, it shows the ability of a new fabrication technique to develop rapidly new coating composition and microstructure. The compact powder were prepared by powder metallurgy method involving powder mixing and the bond coat was synthesized through the application of spark plasma sintering (SPS) at 1100°C, 1050°C and 1100°C to produce a fully dense 94%) Ni 22 Cr 11 Al bulk samples.The influence of sintering temperature on hardness of Ni 22 Cr 11 Al done by micro vickers hardness tester was investigated. And oxidation test were carried out at 1100°C for 20 hr, 40 hr and 100 hr. The resulting coat was characterised with Optical microscopy, Scanning electron microscopy (SEM) and X-ray diffraction (XRD). Micro XRD analysis after the oxidation test revealed the formation of protective oxides and non-protective oxides.

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Investigation of the oxidation behaviour of thin film and bulk copper

Cited by 90 publications

References 6 publications

Oxidation Mechanisms of Copper and Nickel Coated Carbon Fibers

Oxidation Mechanisms of Copper and Nickel Coated Carbon Fibers

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

High Temperature Oxidation Resistance of Ni22Cr11Al Bond Coat Produced by Spark Plasma Sintering as Thermal Barrier Coatings

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