Reducing the macroparticle content of cathodic arc evaporated TiN coatings

Harris, S. G.; Doyle, E.D.; Wong, Yat Choy; Munroe, Paul; Cairney, Julie M.; Long, John M.

doi:10.1016/j.surfcoat.2003.08.086

Cited by 92 publications

(42 citation statements)

References 27 publications

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“…5 (b)]. Harris et al [21] calculated the roughness of the TiN Coatings on HSS twist Drill, and found that it increased from 0.104 to 0.116 µm as the chamber pressure decreased from 1.2 to 0.1 Pa. Golombek et al [22] measured surface roughness Ra, parameter value 0.59 µm, TiN-coated cement carbides using the CAE technique.…”

Section: Surface Roughnessmentioning

confidence: 99%

Influence of Nitrogen Gas Flow Rate on The Microstructural and Mechanical Properties of Tin Deposited Carbon Steel Synthesized by Cae

Ali

Hamzah

Toff³

2017

AJSTD

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This paper reports on the preparation of titanium nitride (TiN) thin films on carbon steel plates, using cathodic arc evaporation CAE PVD technique. We studied and discussed the effect of various nitrogen gas flow rates on microstructural and mechanical properties of TiN-coated carbon steel plates. The coating properties investigated in this work included the surface morphology, thickness of deposited coating, adhesion between the coating and substrate, coating composition, coating crystallography, hardness and surface characterization using a field emission scanning electron microscope (FE-SEM) with energy dispersive X-ray (EDX), Xray diffraction (XRD) with glazing incidence angle (GIA) technique, scratch tester, hardness testing machine, surface roughness tester and atomic force microscope (AFM). SEM analyses showed that all the films had columnar and dense structures with clearly defined substrate-film interfacial layers. The hardness of TiN-coated carbon steel was noted six times more than the hardness of uncoated one. An increase in nitrogen gas flow rate showed; decrease in the formation of macro-droplets, average roughness (Ra) and root-mean-square (RMS) values in CAE PVD technique. During XRD-GIA studies, it was observed that by increasing the nitrogen gas flow rate, the main peak [1,1,1] shifted toward the lower angular position. Microhardness of TiN-coated carbon steel showed about six times increase in hardness than the uncoated one. Scratch tester results showed an average adhesion between the coating material and substrate. Thanks to the high resolution power could be observed that by increasing nitrogen gas flow rate there was percentage increase in the bearing ratio while percentage decrease in histogram.

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Section: Surface Roughnessmentioning

confidence: 99%

Influence of Nitrogen Gas Flow Rate on The Microstructural and Mechanical Properties of Tin Deposited Carbon Steel Synthesized by Cae

Ali

Hamzah

Toff³

2017

AJSTD

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“…The roughness of the coatings were 0.318 µm for V B = -20V and 0.373 µm for V B = -300V, respectively. The increase of surface roughness by coating was mainly caused by droplets on the film due to the scattering of melted target (Cr) during the deposition [14][15] shown as bright particles in Fig. 3.…”

Section: Film Propertiesmentioning

confidence: 99%

Effect of Substrate Bias Voltage on Fretting Fatigue Behaviour of CrN Film Deposited on Ti-6Al-4V Alloy

Rahman¹,

Mahmood²

2014

IJMSA

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Abstract:A fracture behavior of PVD coated ceramic film deposited on Ti-6Al-4V specimens was evaluated for a fretting fatigue geometry in which specimens were contacted on both sides with pads of the similar material. Behavior against the ceramic film coated specimens was characterized through the determination of fretting fatigue strength up to 10 7 cycles. Fretting damage of specimen surface was characterized by SEM and surface profilometer. Ceramic film coating has a great effect to improve the fretting fatigue strength. From the experimental results of S-N tests it is clear that until about 10 6 cycles ceramic coating is effective to improve the fretting fatigue strength. But over 10 6 cycles the strength is lower than that of uncoated specimens. The enhanced fretting fatigue resistance can be attributed to the improved hardness of ceramic film due to change of bias voltage during the film deposition. It has also been concluded that there is smaller influence of bias voltage on fatigue strength below and about 10 6 cycles; whereas, over 10 6 cycles, fatigue strength is clearly changed by bias voltage as well as the contact pressure.

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“…In addition to these studies, there are several other available studies in the literature targeting TiN coatings along with their processing techniques and analyses [29][30][31][32][33][34][35][36]. In addition to TiN coating, different types of hard coatings developed under various employed conditions have also been published extensively [37][38][39][40][41][42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%