Corrosion behaviour of magnetron sputtered α- and β-Ta coatings on AISI 4340 steel as a function of coating thickness

Maeng, S.; Axe, Lisa; Tyson, Trevor; Gładczuk, L.; Sosnowski, Marek

doi:10.1016/j.corsci.2005.08.007

Cited by 51 publications

(20 citation statements)

References 20 publications

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“…4-6), it has been clear that the effect of through-porosity on the corrosion behaviour of the coating is sensitive to the coating thickness. Many studies have also shown that the thin coating typically has much greater passive current density and sometimes does not exhibit a passivation zone [13,65]. The reason for this behaviour is mainly related to the through-porosity.…”

Section: Effects Of Through-porosity On the Corrosion Of Coated Steelmentioning

confidence: 95%

Characterisation of three-dimensional porosity in an Fe-based amorphous coating and its correlation with corrosion behaviour

et al. 2015

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Section: Effects Of Through-porosity On the Corrosion Of Coated Steelmentioning

confidence: 95%

Characterisation of three-dimensional porosity in an Fe-based amorphous coating and its correlation with corrosion behaviour

et al. 2015

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“…Bulk α-Ta phase with low resistivity of 15-60 μ -cm [4] shows excellent physical and chemical properties such as a high melting point of 2996 • C, good ductility, and excellent corrosion resistance in aggressive environments. In contrast to the tough and ductile α-Ta phase, β-Ta phase with higher resistivity of 170-210 μ -cm [4] is hard and brittle, and its presence compromises the coating integrity under strain [5]. The low resistivity α-phase tantalum is preferred to reduce interconnection resistance and is desirable for thin film interconnection.…”

Section: Introductionmentioning

confidence: 97%

“…These properties make β-Ta more susceptible to crack formation and failure [7]. Therefore, the α phase is preferred in application where coatings are subjected to both chemical attack and wear, such as protecting gun-bore against erosion and β phase is preferred in electronic and microchip devices [5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Structure and Properties of Nanoscale Grain-Size β-Tantalum Thin Films

Solati

Dorranian

2013

Molecular Crystals and Liquid Crystals

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Nanoscale grain-size tantalum films with tetragonal crystalline structure were prepared on BK7 glass and 304 steel by low power direct current magnetron sputtering at room temperature. Effect of deposition time on structural and electrical properties of tantalum thin films has been investigated. In all cases, highly preferred (330) orientation can be observed in X-ray diffraction measurements. With increasing the thickness of deposited films from 152 to 388 nm, a weak X-ray photon peak is diffracted from (720) planes of β-Ta. The atomic force microscopy micrographs show the grain size of 20-30 and 100-140 nm for films deposited on glass and steel substrates respectively. Deposition rate was approximately constant. The resistivity of samples on glass substrate is decreased with increasing the time of deposition. Transmittance of deposited films on glass substrate is decreased with increasing the thickness of sample.

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“…Although many studies [34][35][36] have reported such corrosion behaviors of films or coatings dominated by the corrosion inhibition, the research about the effects of the film thickness is not sufficient and clear [37,38]. The corrosion inhibition might result from the corrosion product, which acts as an inhibitor absorbed on the active sites [19,39].…”

Section: Corrosion Resistance Of the Anodic Film When Put In A 01 M mentioning

confidence: 99%

In Situ Preparation and Corrosion Resistance of a ZrO2 Film on a ZrB2 Ceramic

Zhang

et al. 2019

Coatings

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ZrO2 films were in situ prepared using the anodic passivation of a ZrB2 ceramic in alkaline solutions. The composition and structure of the films were characterized using field-emission scanning electron microscopy (FE-SEM), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The corrosion resistances were evaluated in 0.1 M oxalate solution using the potentiodynamic polarization method (PDP) and the electrochemical impedance spectroscopy (EIS) technique. The results show that ZrO2 films can be prepared using anodization from −0.8 to 0.8 V standard hydrogen electrode (SHE) in 2–16 M NaOH solutions. During the anodization, the dehydration reaction of Zr(OH)4 to ZrO2 caused the volume shrinkage and tensile stress of the films. When the thickness of the films exceeded a critical value, the mud-cracking morphology occurred. The films without cracks exhibited the inhibition effect and provided effective corrosion protection in a 0.1 M H2C2O4 solution, which had a positive correlation with the film thickness. The film obtained when put in an 8 M NaOH solution (near the critical thickness) was found to significantly improve its corrosion resistance when put in a 0.1 M H2C2O4 solution by almost one order of magnitude compared with the bare ceramic.

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Corrosion behaviour of magnetron sputtered α- and β-Ta coatings on AISI 4340 steel as a function of coating thickness

Cited by 51 publications

References 20 publications

Characterisation of three-dimensional porosity in an Fe-based amorphous coating and its correlation with corrosion behaviour

Characterisation of three-dimensional porosity in an Fe-based amorphous coating and its correlation with corrosion behaviour

Investigation of the Structure and Properties of Nanoscale Grain-Size β-Tantalum Thin Films

In Situ Preparation and Corrosion Resistance of a ZrO2 Film on a ZrB2 Ceramic

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