Substrate surface finish effects in duplex coatings of PAPVD TiN and CrN with electroless nickel-phosphorus interlayers

Bin-Sudin, M.; Leyland, A.; James, A.S.; Matthews, A.; Housden, J.; Garside, B. K.

doi:10.1016/0257-8972(95)02529-4

Cited by 48 publications

(6 citation statements)

References 11 publications

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“…Nickel coatings of various thickness can be employed as protective layers to improve corrosion resistance, wear resistance, and hardness of steels and other alloys. [1][2][3] EL nickel films are used as the overcoat of the titanium head of golf clubs for wear resistance improvement. EL nickel films are also popular for parts of rockets, aircrafts, automobile and industrial machines as surface treatment for corrosion resistance and wear resistance.…”

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confidence: 99%

Nickel Thin Film Coatings on Steels with Electroless Plating and Sputter Deposition

Mu¹,

Seok²,

Lin³

2003

J. Electrochem. Soc.

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Nickel thin films were coated on steel substrates applying both electroless plating and sputter deposition techniques. The deposition rates and thin film properties including crystal structures, microhardness, scratch resistance, and cross section microstructures were determined. The coating thickness of electroless nickel followed a parabolic rate relationship with time whereas that of sputter deposited nickel varied linearly with time. For up to 1 μm coating thickness, the rate of electroless plating is about ten times as fast as that of sputter deposition under the experimental conditions of this study. X-ray diffraction analysis showed that sputter deposited Ni had clear crystallinity and electroless plated Ni was amorphous. The microhardness of sputter deposited Ni is higher than that of electroless plated Ni. Scratch tests of coated steel showed that adhesion of electroless nickel coatings was superior to that of sputter deposited nickel. © 2003 The Electrochemical Society. All rights reserved.

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confidence: 99%

Nickel Thin Film Coatings on Steels with Electroless Plating and Sputter Deposition

Mu¹,

Seok²,

Lin³

2003

J. Electrochem. Soc.

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“…These Duplex or Hybrid techniques are based on the principles of substrate pre-treatment to improve the mechanical load bearing capacity. Then, a suitable tribological hard coating is applied to increase wear resistance [7,8].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the effects of plasma diffusion processing and duplex diffusion/PVD-coating on the fatigue performance of Ti–6Al–4V alloy

Cassar

Wilson²,

Banfield

et al. 2011

International Journal of Fatigue

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a b s t r a c tThe effect of triode-plasma enhanced low-pressure oxygen and/or nitrogen diffusion treatments, either as a single process or in conjunction with plasma-assisted physical vapour deposition (PAPVD) on Ti6Al-4V has been studied under rotating-bending fatigue testing. Following the diffusion treatment, samples exhibit a hardened case, more than 30 lm deep. Semi-logarithmic S-N plots are used to demonstrate and compare the significant changes in fatigue resistance obtained from each process. Fractography and residual stress measurements show that, compared to annealed samples, the fatigue strength of the diffusion-treated samples was superior; although the result changed depending on the processing parameters and microstructure of the substrate material. Also, unsupported and mechanically uncompliant ceramic coatings, such as TiN, promote the initiation of multiple crack sites, which lead to premature failure of the Ti-alloy substrate and a consequent reduction in endurance limit.

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“…They indicated that coating prior to plasma nitriding enhanced the surface properties and fatigue strength of the workpiece. Bin Sudin et al [16] investigated the surface finish characteristics in duplex coating of plasma assisted physical vapor deposition of TiN and CrN, and nickelphosphorous inter-layers. They showed that the surface roughness could be optimized to achieve the best compromise in terms of cost and performance.…”

Section: Electronic Accessmentioning

confidence: 99%

Comparative study of wear mechanism of duplex treated M7 HSS drill bits

Yilbas

Rashid²,

Nizam³

2000

Industrial Lubrication and Tribology

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The surface coating of drill bits improves the tool life considerably and enhances the end product quality. The improved coating is desirable for long service operations. One of the methods to achieve this is to develop an interface layer between the coat and the tool base such that the transition of shear properties occurs across the interface layer. The application of duplex treatment (plasma pre‐nitriding before PVD TiN coating) to the tool surface becomes fruitful in this regard. In the present study, the wear properties of the duplex treated and untreated M7 HSS twist drill bits are examined. The wear tests are conducted on a dry base, and the feed rate and rotational speed are kept constant during the drilling tests. SEM and EDS are conducted to analyze the wear properties and metallurgical changes on the tool surface after the tests. It is found that the build up edge forms on the untreated tool surface, which in turn results in adhesion and abrasive wear. In the case of duplex treated drill bit, thinning of TiN coat is observed, but the coat is neither partially nor totally pealed off from the tool surface in the wear land.

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Substrate surface finish effects in duplex coatings of PAPVD TiN and CrN with electroless nickel-phosphorus interlayers

Cited by 48 publications

References 11 publications

Nickel Thin Film Coatings on Steels with Electroless Plating and Sputter Deposition

Nickel Thin Film Coatings on Steels with Electroless Plating and Sputter Deposition

Evaluating the effects of plasma diffusion processing and duplex diffusion/PVD-coating on the fatigue performance of Ti–6Al–4V alloy

Comparative study of wear mechanism of duplex treated M7 HSS drill bits

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