Corrosion-wear behaviour of PVD Cr/CrN multilayer coatings for gear applications

Bayón, R.; Igartua, A.; Fernández, X.; Martı́nez, R.; Rodríguez, Rafael; Garcı́a, J.A.; Frutos, A. de; Arenas, M.A.; Damborenea, J. de

doi:10.1016/j.triboint.2008.06.015

Cited by 90 publications

(28 citation statements)

References 18 publications

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“…It has been proposed that the multilayering will serve to block the path of the corrosive agent to the substrate by closing up pores, crevices, defects or failures due to the coatings columnar structure [24][25][26][27] (i.e. the multilayering process itself disrupts the growth of the film, including the growth of defects).…”

Section: Introductionmentioning

confidence: 99%

The effect of coating architecture and defects on the corrosion behaviour of a PVD multilayer Inconel 625/Cr coating

Daure

Voisey

Shipway

et al. 2017

Surface and Coatings Technology

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This paper investigates the effect of substrate surface finish and deposition conditions of PVD multilayer Inconel 625/Cr coatings on their ability to act as a corrosion-barrier. The corrosionbarrier performance of the coatings was characterized by potentiodynamic testing and salt-spray testing followed by image analysis of the exposed surface; further coating properties were investigated through XRD, SEM, EDX and scratch testing. The results show that multilayering produced the expected improvement in scratch resistance however it did not affect corrosion behaviour. Interrupting the deposition process did not decrease the defect density. Defect density was observed to reduce with decreasing substrate surface finish. The corrosion barrier performance of the multilayer Inconel 625/Cr coating (bp100 nm) was greatly improved for coatings deposited on a polished substrate. For the multilayer Inconel 625/Cr coating system used in this work multilayering and process interruption did not prevent defects from limiting the corrosion barrier effectiveness of the coatings. Corrosion barrier performance was successfully enhanced by the use of low roughness substrates to minimise the defect density.

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Section: Introductionmentioning

confidence: 99%

The effect of coating architecture and defects on the corrosion behaviour of a PVD multilayer Inconel 625/Cr coating

Daure

Voisey

Shipway

et al. 2017

Surface and Coatings Technology

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“…In the literature it was found that thickness ratio of individual layers as well as the bimodal period play an important role to improve tribological properties of coatings [15,[27][28][29]. Wieciński et al [27] reported that the thickness ratio of Cr/CrN coatings between 0.65 and 0.81 had the lowest volume loss at oblique angles whereas no erosion resistance was observed in our case.…”

Section: Erosion Mechanismmentioning

confidence: 49%

Investigation of the Wear Resistance Properties of Cr/CrN Multilayer Coatings against Sand Erosion

Naveed

Obrosov

Weiß

2015

Conference Papers in Science

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The wear of metallic components used in gas and steam turbines due to erosive sand particles leads to a tremendous decrease in their lifetime. This wear can be reduced by the use of suitable erosion resistant coatings resulting in lower maintenance costs. In this context, multilayer Cr/CrN PVD coatings using an industrial coater were designed and applied on Inconel 718, a material which finds its application in gas turbines. A variation in the bimodal period has been induced in order to achieve an optimal coating architecture providing optimum properties needed for the erosion resistant coatings. The coating was deposited using a single Crtarget with an induction of N 2 during the nitriding phase at a temperature of 480-500 ∘ C and the coating thickness of 24-26 m was kept constant throughout. The erosion tests were conducted at angles of 30 ∘ , 60 ∘ , and 90 ∘ . The sand used for the test is an irregular shaped SiO 2 . The erosion tests were followed by a detailed microscopic examination of the eroded coating structure in combination with nanoindentation and scratch tests.

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“…A maximum hardness of ~36 GPa and a minimum COF of ~0.4 at 140 V were achieved (load: 10 N). In another study performed by Bayon et al [52], the tribo-corrosion property of Cr/CrN multilayer coatings deposited by the cathodic arc method on steel and silicon substrates was investigated. A maximum hardness of ~29 GPa and a minimum COF of ~0.3 was achieved (counterpart: 4 mm Si 3 N 4 ball).…”

Section: Cr-based Multilayer Coatingsmentioning

confidence: 99%

Tribology of multilayer coatings for wear reduction: A review

et al. 2017

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Friction and wear phenomena encountered in mechanical systems with moving components are directly related to efficiency, reliability and life of the system. Hence, minimizing and controlling these phenomena to achieve the desired system performance is crucial. Among the numerous strategies developed for reducing friction and wear, coatings have been successfully utilized in various engineering applications to mitigate tribological problems. One of the benefits of coatings is that they may be fabricated using a variety of materials in several different forms and structures to satisfy the requirements of the operating conditions. Among many types, coatings that are comprised of a combination of materials in the form of a multilayer have been gaining much interest due to the added degree of freedom in tailoring the coating property. In this paper, the properties and development status of multilayer coating systems for tribological applications were reviewed with the aim to gain a better understanding regarding their advantages and limitations. Specifically, focus was given to Ti-based and Cr-based coatings since Ti and Cr were identified as important elements in multilayer coating applications. Emphasis was given to materials, design concepts, mechanical properties, deposition method, and friction and wear characteristics of these types of coatings.

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Corrosion-wear behaviour of PVD Cr/CrN multilayer coatings for gear applications

Cited by 90 publications

References 18 publications

The effect of coating architecture and defects on the corrosion behaviour of a PVD multilayer Inconel 625/Cr coating

The effect of coating architecture and defects on the corrosion behaviour of a PVD multilayer Inconel 625/Cr coating

Investigation of the Wear Resistance Properties of Cr/CrN Multilayer Coatings against Sand Erosion

Tribology of multilayer coatings for wear reduction: A review

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