Surface Treatments for Automotive Applications

Vetter, J.

doi:10.1007/978-3-319-14771-0_6

Cited by 8 publications

(5 citation statements)

References 42 publications

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“…Basic information about the deposition technologies is beyond the scope of this review. The interested reader is invited to look at available publications [24][25][26][27][28][29][30][31]. Some more exotic evaporation methods are hollow cathode arc evaporation [16] and activated reactive evaporation [32].…”

Section: Deposition Technologies and Coating Systemsmentioning

confidence: 99%

Quo Vadis: AlCr-Based Coatings in Industrial Applications

et al. 2021

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AlCr-based hard nitride coatings with different chemical compositions and architectures have been successfully developed and applied over the last few decades. Coating properties are mainly influenced by deposition conditions and the Al/Cr content. The fcc structure is dominant for an Al-content up to Al0.7Cr0.3N and is preferred for most cutting applications. Different (AlCrX)N alloying concepts, including X = Si, W, B, V, have been investigated in order to enhance oxidation resistance and wear behaviour and to provide tribological properties. AlCr-based oxynitrides and even pure oxides (Al1−xCrx)2O3 with different crystalline structures have been explored. Multi- and nanolayered coatings within the AlCr materials system, as well as in combination with (TiSi)N, for example, have also been implemented industrially. The dominant deposition technology is the vacuum arc process. Recently, advanced high-power impulse magnetron sputtering (HiPIMS) processes have also been successfully applied on an industrial scale. This paper describes basic coating properties and briefly addresses the main aspects of the coating processes as well as selected industrial applications.

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Section: Deposition Technologies and Coating Systemsmentioning

confidence: 99%

Quo Vadis: AlCr-Based Coatings in Industrial Applications

et al. 2021

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“…The purpose was to find the process for impregnating the nanoparticles with the parent material. Depending on the requirement, various coating processes used are ion plating, reactive sputtering, magnetron sputtering [8,13], chemical vapor deposition (CVD) [8,30,31], thermal spraying [8,13,28,32], etc., to coat these materials. Moreover, to select parameters for this impregnation process, the author has worked in the same field using the plasma nitriding process [33].…”

Section: Introductionmentioning

confidence: 99%

“…The primary intention of this research was that the atomic restructuring and durability of the revised material should be more significant. The vacuum heat treatment [13,[35][36][37][38][39] process is an appropriate option. The primary purpose is to improve the fatigue life of bearing.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Tribological Properties of Cubic and Hexagonal Boron Nitride Nanoparticles Impregnated on Bearing Steel via Vacuum Heat Treatment Method

Bhalerao

Lakade

2022

Coatings

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In the current world of coatings and nanomaterials, specifically bearings, zinc, chromium, nickel, diamond-like coatings, and molybdenum disulfide are being used, to name but a few. Boron nitride in various forms has been used to enhance the surface properties, such as hardness, wear resistance, and corrosion resistance of dies, tools, etc. In this paper, a significant focus is being given to the improvement of the surface properties of bearing-steel materials by the impregnation of cubic and hexagonal boron nitride nanoparticles. The vacuum heat treatment method is used for treating the sample pins of material equivalents to EN31. In the design of the experiments, the Taguchi method with L27 orthogonal array is used for the optimization of various parameters, such as the weight % of c-BN and h-BN nanoparticles and the temperature of the vacuum treatment. With the help of preliminary experimentation, the three levels of three parameters are decided. The microhardness analysis shows an improvement from 321 HV0.1 to 766 HV0.1 for a 50 µm case depth of nanoparticle impregnation. The evaluation of the influence of selected factors is also performed using ANOVA and the S/N ratio, and it was revealed that hex boron nitride (h-BN) affects the microhardness value more than the other two factors. The friction and wear testing reveal that the wear properties are improved by approximately 1.6 times, and the frictional force also decreases by approx. 1.4 times. Scanning electron microscope (SEM) analysis shows that the nanoparticles are penetrated by 21.09% and 46.99% atomic weight. In addition, a reduction in the friction coefficient and better wear response were achieved as a result of the heat treatment with nanoparticle impregnation.

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“…In the last decades, several surface treatments and coatings [1][2][3][4] have been developed for mechanical components facing severe in-service conditions in terms of load, wear, and chemical corrosion, such as gears, crankshafts, extrusion and forging dies, valves and springs. Surface treatments can be classified in mechanical (e.g., shot peening and deep rolling), thermal (e.g., quenching and tempering) and diffusion (e.g., carburizing, nitriding, carbonitriding and nitrocarburizing), while coatings may involve metalling or non-metallic protective paints.…”

Section: Introductionmentioning

confidence: 99%

Effect of Salt Bath Nitrocarburizing and Post-Oxidation on Static and Fatigue Behaviours of a Construction Steel

Campagnolo

Dabalà

Meneghetti

2019

Metals

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Several surface modification technologies are typically applied to improve the mechanical properties of the material surface of structural components subjected to severe conditions of load, wear and chemical erosion of the surface. The nitrocarburizing and post-oxidation heat treatment, also known as quench-polish-quench (QPQ), improves the fatigue, wear and corrosion resistance properties of the material, since it increases the surface hardness and generates surface compressive residual stresses. In the present contribution, the effects of the salt bath nitrocarburizing and post-oxidation heat treatment on the static and fatigue behaviours of 39NiCrMo3 construction steel have been investigated by experimentally testing plain as well as notched specimens. For comparison purposes, 39NiCrMo3 construction steel, both untreated and treated, and X5CrNiCuNb 16-4 stainless steel have been tested. First, the microstructure of the untreated and treated steel has been identified by metallographic analysis; micro-hardness measurements have been collected and residual stresses profiles have been obtained by using the X-ray diffraction technique. Then, experimental static and fatigue tests have been performed. Finally, the fracture surfaces have been analysed to locate fatigue crack nucleation sites.

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Surface Treatments for Automotive Applications

Cited by 8 publications

References 42 publications

Quo Vadis: AlCr-Based Coatings in Industrial Applications

Quo Vadis: AlCr-Based Coatings in Industrial Applications

Enhancement of Tribological Properties of Cubic and Hexagonal Boron Nitride Nanoparticles Impregnated on Bearing Steel via Vacuum Heat Treatment Method

Effect of Salt Bath Nitrocarburizing and Post-Oxidation on Static and Fatigue Behaviours of a Construction Steel

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