Corrosion protection of carbon fibre reinforced aluminium composite by diamondlike carbon coatings

Wielage, B.; Dorner, A.; Shürer, C.; Kim, J.H.

doi:10.1179/026708300101507767

Cited by 13 publications

(3 citation statements)

References 8 publications

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“…1 Aluminum films covered by a thin (Ͻ5 nm) carbon film exhibited extreme corrosion resistance to concentrated acids ͑hydrofluoric acid and phosphoric ϩ nitric acid͒ 2 and to 3.5 wt % NaCl solution. 3,4 Mechanical durability and corrosion resistance for magnetic layers based on Co-alloys were obtained by covering the material with amorphous hydrogenated carbon doped with nitrogen. 5,6 This is particularly significant for the protection of magnetic hard drives.…”

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confidence: 99%

Electron Beam Induced Writing of Corrosion Protection

Sieber

Hildebrand

Djenizian

et al. 2003

Electrochem. Solid-State Lett.

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Carbon patterns ͑C layers͒ were deposited on iron surfaces by electron-beam induced contamination decomposition writing. Chemical and electrochemical etching were used to investigate the protective nature of these C layers against metal corrosion. The results clearly show that E-beam written C patterns can be very corrosion resistant. The key factor controlling the degree of protectiveness, under given conditions of attack, is the deposition dose, i.e., the layer thickness. For sufficiently high doses, the iron surface can be completely protected against corrosion. Therefore, this direct masking approach opens new perspectives for highly precise and controlled local corrosion suppression.In recent years, carbon layers on metallic surfaces have found increasing interest to provide new methods for corrosion protection as well as to alter and tailor mechanical properties of surfaces.For example, it has been reported that corrosion resistance of aluminum and aluminum alloys can be modified significantly by carbon evaporation and carbon sputtering under concurrent argon ion bombardment. 1 Aluminum films covered by a thin (Ͻ5 nm) carbon film exhibited extreme corrosion resistance to concentrated acids ͑hydrofluoric acid and phosphoric ϩ nitric acid͒ 2 and to 3.5 wt % NaCl solution. 3,4 Mechanical durability and corrosion resistance for magnetic layers based on Co-alloys were obtained by covering the material with amorphous hydrogenated carbon doped with nitrogen. 5,6 This is particularly significant for the protection of magnetic hard drives.A well-known case of electron beam-induced patterning is the formation of carbon-rich contamination layers in scanning electron microscopes ͑SEMs͒. The E-beam activates reactions of the residual hydrocarbons ͑molecules from the pump oil͒ in diffusion pumped systems to create a highly cross-linked hydrocarbon deposit. In other words, the E-beam cracks the thin layer of hydrocarbon molecules condensed at the sample surface at the point of impact of the E-beam. In previous work, it has been demonstrated that such C patterns can be exploited to block completely and selectively electrochemical deposition of metals at semiconductor surfaces. 7,8 This E-beam induced C-deposition technique has been used to produce metal structures on semiconductor surfaces in the sub-100 nm range 9 as well as the selective formation of light emitting porous Si. 10 The present work explores the feasibility of using such C layers produced by contamination writing in a SEM to suppress corrosion of iron at the treated locations. This would provide a C-masking technique to protect specific surface locations in a highly controlled manner and with a very high lateral resolution. ExperimentalIron ͑99.5%͒ samples were mechanically polished using 0.1 m diamond paste finish. Subsequently, the samples were degreased by sonicating in ethanol, rinsed with deionized ͑DI͒ water and dried in an argon stream. To achieve E-beam induced deposition of the C patterns, the samples were irradiated in a JEOL 6400 SEM. Single E-bea...

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confidence: 99%

Electron Beam Induced Writing of Corrosion Protection

Sieber

Hildebrand

Djenizian

et al. 2003

Electrochem. Solid-State Lett.

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“…This study was made by Han et al [14]. When red mud was added to Aluminium 6061 metal matrix its overall corrossion rate decrease which was reported by Zucchi et al [20]. 10 % 6 % Sample 3 10 % 8 %…”

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confidence: 84%

Evaluation of Hardness and Corrossion Behaviour of Al 7075∕TiB2∕Cr2O3 Composite

Smart¹,

Tjprc²

2018

IJMPERD

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Aluminium composite is an attractive material for using in corrossive environment. Many studies have been conducted on corrossion rate in Aluminium composites. In this work Aluminium 7075 composite is reinforced with TiB 2 and Cr 2 O 3 with different weight perentage of reinforcements. From the results it is understood that the density of the composite increases with more addition of reinforcements to the matrix. The uniform immersion test (ASTM-G31) in 90 ml of HCl was conducted. It was found that there is an increase in corrossion resistance when the reinforcements were added.

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“…A suitable single and two layer coating system has been successfully identified for the composite alloys, which provided good protection against corrosion and enhanced their life considerably in various applications. [19][20][21] …”

Section: Degradation Mechanismmentioning

confidence: 99%

Corrosion characteristics of aluminium based metal matrix composites

Gurrappa¹,

Prasad²

2006

Materials Science and Technology

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There is a growing demand both in aerospace as well as commercial markets for lighter weight, higher stiffness and higher thermal stability materials to solve the design engineer's problems of reduced mass, higher access speeds, improved mechanical and thermal stability for today's advanced technologies. Metal matrix composites satisfy the above mentioned properties. However, corrosion is a major concern as the secondary phase formation in the matrix takes place as a result of ceramic particle addition, which threatens their exploitation for such applications. In the current paper, the corrosion characteristics of different aluminium based metal matrix composites of varying volume fractions of SiC (SiC/Al) has been studied systematically. Pitting corrosion studies have been investigated in detail. Scanning electron microscopy (SEM) has been used not only to understand the nature of corrosion but also to identify the location of corrosion in the matrix phase. X-ray diffraction analysis (XRD) has been used to determine the intermetallics formation. EPMA studies have been carried out to determine the distribution of SiC particulates in the matrix as well as the location of intermetallics. Finally, the corrosion mechanism causing the SiC/Al composites to degrade under marine environmental conditions has been presented and the necessity of finding suitable surface coatings to enhance the corrosion resistance of these composites is stressed.

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Corrosion protection of carbon fibre reinforced aluminium composite by diamondlike carbon coatings

Cited by 13 publications

References 8 publications

Electron Beam Induced Writing of Corrosion Protection

Electron Beam Induced Writing of Corrosion Protection

Evaluation of Hardness and Corrossion Behaviour of Al 7075∕TiB2∕Cr2O3 Composite

Corrosion characteristics of aluminium based metal matrix composites

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