Influence of modulation periods and modulation ratios on the structure and mechanical properties of nanoscale TiAlN/TiB2 multilayers prepared by IBAD

Sun, Yi; Yan, J.Y.; Zhang, S.; Xue, F.Y.; Liu, G.Q.; Li, D.J.

doi:10.1016/j.vacuum.2011.07.049

Cited by 17 publications

(5 citation statements)

References 15 publications

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“…The dislocation nucleation becomes energetically unfavorable and can hardly force the leading dislocation across the relatively sharp interface as dislocations pile up. So when the modulation ratio R reaches 5:1, the TiBN/CrN film has the largest amount of dislocations in each individual layer and cannot penetrate the coherent interface resulting in the highest hardness [38].…”

Section: Resultsmentioning

confidence: 99%

Influence of modulation period and modulation ratio on structure and mechanical properties of TiBN/CrN coatings deposited by multi-arc ion plating

Zhou

Yan

Han

et al. 2015

Applied Surface Science

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Section: Resultsmentioning

confidence: 99%

Influence of modulation period and modulation ratio on structure and mechanical properties of TiBN/CrN coatings deposited by multi-arc ion plating

Zhou

Yan

Han

et al. 2015

Applied Surface Science

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“…Compared to monolayer films, nanomultilayer films have superior mechanical properties. For example, Sun et al [6] prepared TiAlN/TiB2 multilayer films and found that all multilayer films with well-defined interfaces showed higher hardness than the individual TiAlN and TiB2 layers. It was reported that the increase of hardness is not only due to the laminar structure and its different shear moduli, but also due to the mismatch of lattice constants at adjacent interfaces, which creates tensile stress fields and compressive stress fields, and the forces generated by the two materials with different shear moduli impede the dislocation motion when the dislocation crosses the coherent interface [7].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Investigation on Mechanical Properties of Tib<sub>2</sub>/Cr Multilayer Film by Indentation

Chen¹,

Wu²,

Wang³

2022

Preprint

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Alternating TiB2-dcMS and Cr-HiPIMS layers are used to fabricate TiB2/Cr multilayer films. In-troducing a 5-nm-thick Cr interlayer deposited under a substrate bias of -60 V produces slight increases of both film hardness and elastic modulus. The TEM observation indicates that the Cr grains favor epitaxially growth on TiB2 interlayer, forming a coherent TiB2/Cr interface. This produces the hardness increasement. Mechanic measurement by using AFM illustrates that the coherent interface increases the elastic modulus of the Cr up to ~280 GPa, which is significantly higher than bulk material.

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“…Titanium diboride (TiB 2 ) offers high temperature oxidation protection due to its high melting point (3490 K), thermal stability [17] and high strength to density ratio. Moreover, TiB 2 offers high hardness, superior Young's modulus and abrasive wear resistance, being particularly suited for machine tooling applications [18]. Nano-structured multilayer coatings based on TiAlN have superior thermal stabilities, greater hardness and offer exceptional wear resistance characteristics surmounting that of a composite TiAlN coating [19].…”

Section: Introductionmentioning

confidence: 99%

“…A further consideration when designing multilayer systems is the stress generated within the coating, governed by the bilayer thickness and defined as the sum of the individual layer thicknesses. Previous studies indicate that the bilayer thickness in multilayer systems has an important influence on wear behaviour [18,19] and the addition of small amounts of TiB 2 has proved to enhance the mechanical characteristics [8,23]. Therefore, the objectives of the study are to characterise the wear properties of multilayer coatings with different TiB 2 contents and two sets of bilayer thicknesses.…”

Section: Introductionmentioning

confidence: 99%

Titanium Aluminium Nitride and Titanium Boride Multilayer Coatings Designed to Combat Tool Wear

2017

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The lifetimes and the premature wear of machining tools impact on manufacturing efficiencies and productivities. A significant proportion of machining tool damage can be attributed to component wear. Here, titanium aluminium nitride (TiAlN) multi-layered with titanium diboride (TiB 2) prepared by PVD (Physical Vapour Deposition) sputtering onto H-13 substrates are studied as potential wear-resistant coatings for forging die applications. The TiB 2 content has been altered and two-sets of coating systems with a bilayer thickness either less than or greater than 1 µm are investigated by tribological and microstructural analysis. XRD analysis of the multilayers reveals the coatings to be predominately dominated by the TiAlN (200) peak, with additional peaks of TiN (200) and Ti (101) at a TiB 2 content of 9%. Progressive loads increasing to 100 N enabled the friction coefficients and the coating failure at a critical load to be determined. Friction coefficients of around 0.2 have been measured in a coating containing 9% TiB 2 at critical loads of approximately 70 N. Bi-directional wear tests reveal that bilayers with thicknesses greater than 1 µm have frictional coefficients that are approximately 50% lower than those where the bilayer is less than 1 µm. This is due to the greater ability of thicker bilayers to uniformly distribute the stress within the layers. There are two observed frictional coefficient regimes corresponding to a lower and higher rate of material loss. At the lower regime, with TiB 2 contents below 20%, material loss occurs mainly via delamination between the layers, whilst at compositions above this, material loss occurs via a break-up of material into finer particles that in combination with the higher loads results in greater material loss. The measured wear scar volumes for the TiAlN/TiB 2 multilayer coatings are approximately three times lower than those measured on the substrate, thus validating the increased wear resistance offered by these composite coatings.

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Influence of modulation periods and modulation ratios on the structure and mechanical properties of nanoscale TiAlN/TiB2 multilayers prepared by IBAD

Cited by 17 publications

References 15 publications

Influence of modulation period and modulation ratio on structure and mechanical properties of TiBN/CrN coatings deposited by multi-arc ion plating

Influence of modulation period and modulation ratio on structure and mechanical properties of TiBN/CrN coatings deposited by multi-arc ion plating

A Comparative Investigation on Mechanical Properties of Tib<sub>2</sub>/Cr Multilayer Film by Indentation

Titanium Aluminium Nitride and Titanium Boride Multilayer Coatings Designed to Combat Tool Wear

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