Adhesion and Mechanical Properties of TiAlN and AlTiN Magnetron Sputtered Coatings Deposited on the DMSL Titanium Alloy Substrate

Walczak, Mariusz; Pasierbiewicz, Kamil; Szala, Mirosław

doi:10.12693/aphyspola.136.294

Cited by 24 publications

(14 citation statements)

References 22 publications

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“…These results strongly In Figure 5, it is clearly visible that the AlTiN and TiAlN coatings have comparable elastic modulus and hardness, in the range of standard deviation. The H and E values are within the result range reported in the literature [9,15,18,24]. Nevertheless, AlTiN exhibits higher H/E and H 3 /E 2 ratios than TiAlN, which can be attributed to its higher Al content.…”

Section: Cavitaiton Erosion Resitance (Cer)supporting

confidence: 85%

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Cavitation Erosion and Sliding Wear Mechanisms of AlTiN and TiAlN Films Deposited on Stainless Steel Substrate

et al. 2019

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The resistance to cavitation erosion and sliding wear of stainless steel grade AISI 304 can be improved by using physical vapor deposited (PVD) coatings. The aim of this study was to investigate the cavitation erosion and sliding wear mechanisms of magnetron-sputtered AlTiN and TiAlN films deposited with different contents of chemical elements onto a stainless steel SS304 substrate. The surface morphology and structure of samples were examined by optical profilometry, light optical microscopy (LOM) and scanning electron microscopy (SEM-EDS). Mechanical properties (hardness, elastic modulus) were tested using a nanoindentation tester. Adhesion of the deposited coatings was determined by the scratch test and Rockwell adhesion tests. Cavitation erosion tests were performed according to ASTM G32 (vibratory apparatus) in compliance with the stationary specimen procedure. Sliding wear tests were conducted with the use of a nano-tribo tester, i.e., ball-on-disc apparatus. Results demonstrate that the cavitation erosion mechanism of the TiAlN and AlTiN coatings rely on embrittlement, which can be attributed to fatigue processes causing film rupture and internal decohesion in flake spallation, and thus leading to coating detachment and substrate exposition. At moderate loads, the sliding wear of thin films takes the form of grooving, micro-scratching, micro-ploughing and smearing of the columnar grain top hills. Compared to the SS reference sample, the PVD films exhibit superior resistance to sliding wear and cavitation erosion.

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Section: Cavitaiton Erosion Resitance (Cer)supporting

confidence: 85%

“…Adhesion of the deposited coatings was determined by scratch testing and Rockwell adhesion tests. The scratch tests were performed on a Micro Combi Tester (Anton Paar GmbH, Ostfildern, Germany) [24] while the Rockwell adhesion tests [15,25] were conducted according to the VDI 3198 procedure.…”

Section: Methodsmentioning

confidence: 99%

Cavitation Erosion and Sliding Wear Mechanisms of AlTiN and TiAlN Films Deposited on Stainless Steel Substrate

et al. 2019

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“…After that, the Rockwell hardness was recalculated into the Vickers scale in acompliance with the ISO 18265 standard [38]. The deposited nitride film hardness was tested on the top of AlCrSiN film surface using an Ultra Nanoindentation Tester (Anton Paar GmbH, Ostfildern, Germany), in compliance with the procedures described in [39]. The thin film nanohardness was measured for comparison with the surface macro hardness mesured with Vickers hardness tester.…”

Section: Methodsmentioning

confidence: 99%

Tribological Behaviour of K340 Steel PVD Coated with CrAlSiN Versus Popular Tool Steel Grades

Drozd¹,

Walczak²,

Szala³

et al. 2020

Preprint

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The tribological performance of metalwork steel tools is of vital importance in both cold and hot working processes. One solution for improving metal tool life is the application of coatings. This paper investigates the effect of CrAlSiN thin-film PVD-deposition on the tribological behaviour of tool steel K340. The sliding wear performance of the coated K340 steel is analysed in relation to both the uncoated K340 steel and a range of tool steels dedicated to hot- and cold-working, such as X155CrVMo12-1, X37CrMoV5-1, X40CrMoV5-1, 40CrMnMo7 and 90MnCrV8. The investigated tool steels were heat-treated, while K340 was subjected to thermochemical treatment and then coated with a CrAlSiN hard film (K340/CrAlSiN). The hardness, chemical composition, phase structure and microstructure of steels K340 and K340/CrAlSiN are examined. Tribological tests were conducted using the ball-on-disc tester in compliance with the ASTM G99 standard. The tests were performed under dry unidirectional sliding conditions, using an Al2O3 ball as a counterbody. The wear factor and coefficient of friction are estimated and analysed with respect to hardness and alloying composition of the materials under study. SEM observations are made to identify the sliding wear mechanisms of the analysed tool steels and PVD-coated K340 steel. In contrast to the harsh abrasive-adhesive wear mechanism observed for uncoated tool steels, the abrasive wear dominates in case of the AlCrSiN. The deposited thin film effectively prevents the K304 substrate from harsh wear severe degradation. Moreover, thanks to the deposited coating, the K304/CrAlSiN sample has a COF of 0.529 and a wear factor of K=5.68×10−7 m3 N−1 m−1, while the COF of the reference tool steels ranges from 0.702 to 0.885 and their wear factor ranges from 1.68×10−5 m3 N−1 m−1 to 3.67×10−5 m3 N−1 m−1. The CrAlSiN deposition reduces the wear of the K340 steel and improves its sliding properties, which makes it a promising method for prolonging the service life of metalwork tools.

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“…Researchers have studied the characteristics of fractured surfaces using observational tools, from macro- to nanoscale [ 13 , 14 , 15 , 16 , 17 ]. Unfortunately, even though advanced methods such as optical coherence tomography [ 18 ], scanning acoustic microscopy [ 19 ] or energy response approach based on strain energy density histories during variable loading [ 20 , 21 ] are described in the literature, usually simple-fracture qualitative analysis conducted with scanning electron microscopy is employed for the evaluation of surface fractures resulting from impact [ 22 , 23 ], tensile strength [ 24 , 25 ], fatigue [ 5 , 19 ], ultra-high fatigue [ 26 ], adhesion testing [ 27 ] or even wear damage description [ 28 , 29 ]. However, few studies have investigated the use of profile and surface roughness as a tool for fatigue fracture characterisation.…”

Section: Introductionmentioning

confidence: 99%

Profile and Areal Surface Parameters for Fatigue Fracture Characterisation

et al. 2020

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Post-mortem characterisation is a pivotal tool to trace back to the origin of structural failures in modern engineering analyses. This work compared both the crack propagation and rupture roughness profiles based on areal parameters for total fracture area. Notched and smooth samples made of weather-resistant structural steel (10HNAP), popular S355J2 structural steel and aluminium alloy AW-2017A under bending, torsion and combined bending–torsion were investigated. After the fatigue tests, fatigue fractures were measured with an optical profilometer, and the relevant surface parameters were critically compared. The results showed a great impact of the loading scenario on both the local profiles and total fracture areas. Both approaches (local and total fracture zones) for specimens with different geometries were investigated. For all specimens, measured texture parameters decreased in the following order: total area, rupture area and propagation area.

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Adhesion and Mechanical Properties of TiAlN and AlTiN Magnetron Sputtered Coatings Deposited on the DMSL Titanium Alloy Substrate

Cited by 24 publications

References 22 publications

Cavitation Erosion and Sliding Wear Mechanisms of AlTiN and TiAlN Films Deposited on Stainless Steel Substrate

Cavitation Erosion and Sliding Wear Mechanisms of AlTiN and TiAlN Films Deposited on Stainless Steel Substrate

Tribological Behaviour of K340 Steel PVD Coated with CrAlSiN Versus Popular Tool Steel Grades

Profile and Areal Surface Parameters for Fatigue Fracture Characterisation

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