Effect of microstructure on the erosion resistance of Cr–Si–N coatings

Bousser, Étienne; Benkahoul, M.; Martinů, L.; Klemberg-Sapieha, Jolanta E.

doi:10.1016/j.surfcoat.2008.08.012

Cited by 57 publications

(32 citation statements)

References 19 publications

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“…lower H/E) can show higher durability [6,24], although in other studies lower plasticity (i.e. higher H/E) and high H 3 /E 2 have also been shown to be beneficial [25][26][27]. In the design of multilayer coatings for erosion protection Klemberg-Sapieha and co-workers have shown that increasing H 3 /E 2 can be highly desirable [26][27] and lower elastic modulus than the substrate can spread the load over a larger volume.…”

Section: Introductionmentioning

confidence: 98%

“…higher H/E) and high H 3 /E 2 have also been shown to be beneficial [25][26][27]. In the design of multilayer coatings for erosion protection Klemberg-Sapieha and co-workers have shown that increasing H 3 /E 2 can be highly desirable [26][27] and lower elastic modulus than the substrate can spread the load over a larger volume. This can delay the onset of plastic deformation in the substrate and subsequent cracking and chipping of the coating due to the development of tensile stresses on the coating side close to the substrate-coating interface that result in cracks.…”

Section: Introductionmentioning

confidence: 99%

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Nano-scratch testing of (Ti,Fe)N x thin films on silicon

Beake

Vishnyakov

Harris

2017

Surface and Coatings Technology

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Thin films of (Ti,Fe)Nx have been produced on silicon wafers with a wide range of compositions and mechanical properties to investigate correlations between the mechanical properties measured by indentation and crack resistance in the highly loaded sliding contact in a nano-scratch test. The nano-scratch test data on the thin films using a well-worn Berkovich indenter with ~1 m end radius were supported by high resolution scanning electron microscopic (SEM) imaging and analytical stress modelling. The results show that mechanical properties of the coating, its thickness and the substrate properties all influence the deformation process. They affect the critical loads required, the type of failures observed and their location relative to the moving probe. The differences in coating mechanical properties affect how the interface is weakened (i.e. by initial substrate or coating yielding or both) and determine the deformation failure mechanism. The load dependence of the friction coefficient provides details of the sliding contact zone and the location of failure relative to the sliding probe. Improved performance was achieved at intermediate hardness and H 3 /E 2 in the nano-scratch tests on thin films. The friction and modelling results strongly suggest that failure at low load on the hardest coatings is due to a combination of high tensile stress at the 2 rear of the contact zone and substrate yield. Designing thin films for protective coatings with in-built dissipative structures (such as soft and low elastic modulus inclusions) and mechanisms to combat stress may be a more successful route to optimise their toughness in highly loaded sliding conditions than aiming to minimise plasticity by increasing their hardness.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Nano-scratch testing of (Ti,Fe)N x thin films on silicon

Beake

Vishnyakov

Harris

2017

Surface and Coatings Technology

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show abstract

“…The damage of electrical contact is a vital factor for the invalidation of integral electrical appliances [57][58][59], so materials used as electrical contacts in these applications must have a good combination of electrical conductivity, wearing qualities, and resistance to erosion and welding [60,61]. Otherwise, the contacts will be eroded, which causes poor contact and arcing.…”

Section: Cu/cnt Contact Materials Prepared By Ccementioning

confidence: 99%

Research and Application of CNT Composite Electroplating

Wang¹,

Deng²,

Cui³

et al. 2011

Carbon Nanotubes - From Research to Applications

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“…In the cases where hard and multilayer coatings protect engine components [10,87,147], these particles would be significantly softer than the eroded target material. Given the technological importance, there is a need to understand the erosion mechanisms present when softer particles impact harder surfaces.…”

Section: Introductionmentioning

confidence: 99%

“…However, more recently, nanocomposite coatings have been shown to be promising candidates for SPE resistance because of their very high hardness and ability to slow crack propagation [29,47,49]. In fact, CrSiN [10], TiSiN [100] and TiSiCN [102,103] systems have been shown to be highly resistant to SPE by small angular alumina particles.…”

Section: Introductionmentioning

confidence: 99%