The effect of titanium current on structure and hardness of aluminium titanium nitride deposited by reactive unbalanced magnetron co-sputtering

Buranawong, Adisorn; Witit-Anun, Nirun; Chaiyakun, Surasing; Pokaipisit, Artorn; Limsuwan, Pichet

doi:10.1016/j.tsf.2011.01.062

Cited by 20 publications

(8 citation statements)

References 14 publications

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“…Tungsten oxide was also determined from the analysis, due to the tungsten consumable electrode used during the pulsed-plasma treatment. 10 While there was only the a-Fe phase in the untreated AISI 4140 steel (Figure 4a), Fe 3 N, g-Fe and tungsten were observed in the modified layer after the treatment (Figure 4b). As seen in Figure 4b, the pulse number is the only difference between the three specimens.…”

Section: Resultsmentioning

confidence: 97%

“…From the SEM micrographs, it is observed that the fracture mechanism was brittle as characterized by the cleavage facets in the bulk material. 10,11 Different fracture mechanisms occurred on the modified layer and the substrate. A fine-grained structure observed in the modified zone where a ductile fracture occurred is an indication of a hard structure.…”

Section: Resultsmentioning

confidence: 99%

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Surface behavior of AISI 4140 modified with the pulsed-plasma technique

Özbek¹,

Durman²

2015

Mater. Tehnol.

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In this study, the microstructure and surface properties of a low-alloy steel (AISI 4140) treated with pulsed plasma were investigated. Three different plasma-gun nozzle distances of (60, 70 and 80) mm and one battery capacity were chosen for a surface modification. The modified surface layers were examined using a light microscope and X-ray analyses were carried out for all the samples. The X-ray diffraction confirmed a development of new phases after the surface treatment. The samples were subjected to micro-hardness measurements and it was found that the hardness values of the modified surfaces were four times higher than those of the untreated samples. The samples were immersed into liquid nitrogen and then broken in a Charpy machine. The fractured surfaces were exposed to SEM and EDS analyses. At the end of the study, thin grains originating from the consumable electrode were detected. After the pulsed-plasma treatment, new structures were obtained. Keywords: pulsed plasma, fracture, consumable electrode, modification V tej {tudiji so bile preiskovane mikrostruktura in lastnosti povr{ine malolegiranega jekla (AISI 4140) po obdelavi s pulzirajo~o plazmo. Za spremembo povr{ine so bile izbrane tri razli~ne razdalje plazemske {obe od povr{ine: 60 mm, 70 mm in 80 mm, in kapaciteta ene baterije. Spremenjene povr{inske plasti so bile preiskovane s svetlobnim mikroskopom in izvr{ene so bile rentgenske analize. Rentgenska difrakcija je potrdila nastanek novih faz po obdelavi povr{ine. Na vzorcih so bile izvr{ene meritve mikrotrdote in ugotovljeno je bilo, da je trdota spremenjene povr{ine {tirikrat ve~ja od tiste pri neobdelanih vzorcih. Le-ti so bili potopljeni v teko~i du{ik in nato prelomljeni na napravi Charpy. Povr{ina preloma je bila analizirana s SEM in EDS. Odkrita so bila drobna zrna, ki izvirajo iz elektrode. Po obdelavi s pulzirajo~o plazmo je nastala nova mikrostruktura.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Surface behavior of AISI 4140 modified with the pulsed-plasma technique

Özbek¹,

Durman²

2015

Mater. Tehnol.

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“…Cheng et al [13] have stated that the interdendrites were characterized by long primary and secondary arms, and the secondary arm spacing was less than 0.5 µm. Zhang, Guana, and Uglov have also reported similar results for the modification layer [13 to 17].…”

Section: Resultsmentioning

confidence: 99%

“…The cathode material dramatically influences the chemical composition and the structure of the coating. The consumable electrode (molybdenum or tungsten) is used to cathode plasma accelerators [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. This situation facilitates the cathode surface melting, which leads to an increase in mass transfer by a micro-droplet fraction.…”

Section: Introductionmentioning

confidence: 99%

The effect of process parameters on microstructure and corrosion behavior of AISI 4140 steel modified by pulse plasma treatment

Özbek

Demirkıran

2022

J. Electrochem. Sci. Eng.

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The pulse plasma system is a surface modification method applied to steel samples. In the present study, the effect of the nozzle distance and pulse number parameters were investigated on the modification process. AISI 4140 steel was preferred as the substrate for modification. In this system, the battery capacity and voltage were constant, and, were selected as 800 mF and 3000 V, respectively. The AISI 4140 steel samples were modified by applying 5, 10, and 15 pulses with 40, 50 and 60 mm nozzle distance. The molybdenum consumable electrode was used during the process. The modified surfaces were examined by optical and scanning electron microscope (SEM) and analyzed by X-ray diffractometer (XRD). Vickers microhardness on the cross-section surface of the samples was measured under a load of 50 g for 15 s. Finally, the specimens were exposed to corrosion in 0.5 M NaCl solution. Corrosion tests were realized using the potentiodynamic polarization method. A modified layer on the steel was determined to consist of two layers, the compound layer and the diffusion layer. It was observed that the structure and thickness of the modified layer affect by pulse number and nozzle distance. New phases such as Fe2N, FeN, MoN, and γ-Fe in the modified layer have occurred. The hardness value of the treated sample has risen about 4-5 times than the untreated, depending on applied process parameters. In general, the pulse plasma treatment has improved the corrosion resistance of treated samples. It was observed that while intergranular corrosion has formed on the unmodified surface, pitting corrosion has appeared on the unmodified surfaces.

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“…The CrB 2 coating prepared by PMS shows the best tribological properties, as compared with, TiN and CrN. Buranawong et al deposited nanocrystalline AlTi 3 N coating by magnetron sputtering technique and observed that the surface roughness, the average thicknesses and the grain size of the coatings increase with an increase in titanium current and the deposition time. Amico and d'Oliveira investigated Al coatings deposited on substrates with different roughness, with and without preheating by high‐velocity oxy‐fuel, flame spraying and electric arc spraying techniques.…”

Section: Introductionmentioning

confidence: 99%

Nanomechanical and nanotribological characterization of multilayer self‐lubricating Ti/MoS₂/Si/MoS₂ nanocoating on aluminium‐silicon substrate

Banday

Wàňi

2019

Surface & Interface Analysis

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Ti/MoS 2 /Si/MoS 2 multilayer coating was fabricated by a pulse laser deposition method from a titanium, molybdenum disulphide, and silicon targets, and the coating was deposited in layers on aluminium-silicon substrates, at room temperature. The structural analysis and surface morphology of multilayer Ti/MoS 2 /Si/MoS 2 coating were analysed using X-ray diffraction, Raman spectroscopy, and scanning electron microscopy integrated with energy dispersive X-ray spectroscopy. Nanomechanical tests were performed on Ti/MoS 2 /Si/MoS 2 coating at small loads of 2000 to 6000 μN to study the effect of load on hardness and Young's modulus. Nanoscratch and nanowear tests were conducted on Ti/MoS 2 /Si/MoS 2 coating at a low load of 1000 to 5000 μN and 100 to 500 μN, respectively, to study deformation and failure behaviours of coating/substrate system and also their nanotribological properties.The results show that hardness and Young's modulus of Ti/MoS 2 /Si/MoS 2 coating decrease with increase in load. A low friction coefficient of 0.09 to 0.16 was observed, which proves that the Ti/MoS 2 /Si/MoS 2 coating possesses selflubricating property. The wear rate of Ti/MoS 2 /Si/MoS 2 coating increases 3.3 × 10 −10 to 7.8 × 10 −10 mm 3 /Nm with increase in load. Ti/MoS 2 /Si/MoS 2 multilayer coating shows a smooth wear track with no cracks and debris on the surface, which attributed plastic flow of softer coating material around the wear track.

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The effect of titanium current on structure and hardness of aluminium titanium nitride deposited by reactive unbalanced magnetron co-sputtering

Cited by 20 publications

References 14 publications

Surface behavior of AISI 4140 modified with the pulsed-plasma technique

Surface behavior of AISI 4140 modified with the pulsed-plasma technique

The effect of process parameters on microstructure and corrosion behavior of AISI 4140 steel modified by pulse plasma treatment

Nanomechanical and nanotribological characterization of multilayer self‐lubricating Ti/MoS₂/Si/MoS₂ nanocoating on aluminium‐silicon substrate

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The effect of titanium current on structure and hardness of aluminium titanium nitride deposited by reactive unbalanced magnetron co-sputtering

Cited by 20 publications

References 14 publications

Surface behavior of AISI 4140 modified with the pulsed-plasma technique

Surface behavior of AISI 4140 modified with the pulsed-plasma technique

The effect of process parameters on microstructure and corrosion behavior of AISI 4140 steel modified by pulse plasma treatment

Nanomechanical and nanotribological characterization of multilayer self‐lubricating Ti/MoS2/Si/MoS2 nanocoating on aluminium‐silicon substrate

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Nanomechanical and nanotribological characterization of multilayer self‐lubricating Ti/MoS₂/Si/MoS₂ nanocoating on aluminium‐silicon substrate