Corrosion preserving high density plasma treatment of precipitation hardening stainless steel

Braceras, I.; Ibáñez, Iñigo; Domínguez-Meister, Santiago; Urgebain, Aiala; Sánchez-García, J.A.; Larrañaga, Aitor; Garmendia, Iñaki

doi:10.1016/j.surfcoat.2018.01.036

Cited by 11 publications

(10 citation statements)

References 17 publications

(21 reference statements)

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“…Electro-tribology tests of aluminum against DLC coatings were performed on a pin-on-disk (PoD) configuration, in controlled humidity environments, with a Microtest MT4002 tribometer (Microtest S.A.), where the evolution of the Coefficient of friction (CoF) and electrical contact resistance (ECR) were continuously monitored [29,39]. The ECR measurements were done by "4 wire" micro-ohmeter (Keithley K2100).…”

Section: Methodsmentioning

confidence: 99%

Electro-tribological properties of diamond like carbon coatings

et al. 2019

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Diamond like carbon (DLC) coatings typically present good self-lubricating tribological properties that could be of interest in sliding dielectric contacts in multiple electrical applications. In this work electro-tribological studies have been performed on several DLC coatings against aluminum in different humidity conditions, in which the coefficients of friction (CoFs) and electrical contact resistance (ECR) were continuously monitored. Results show that CoF and ECR data can be linked to the properties of the coatings (thickness, finishing, microstructure, residual stresses, and wettability) and the degradation modes of their tribological and electrical properties. Therefore, electro-tribological data can provide valuable information about the performance of dielectric coatings, the reasons behind it, and assist in the development of the coatings. ECR also shows potential for on-line monitoring of coated parts in operation.

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Section: Methodsmentioning

confidence: 99%

Electro-tribological properties of diamond like carbon coatings

et al. 2019

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“…Nitriding. Te samples were subjected to active screen plasma nitriding processes, which were carried out in self-built nitriding equipment at the Surface Engineering Laboratory of Tecnalia, as seen in Figure 12 [1,34]. In the active screen plasma treatments, the outer screen is subjected to a voltage, while the samples are immersed in plasma and biased to a lower potential.…”

Section: Active Screen Plasmamentioning

confidence: 99%

“…Te thicknesses of the coatings were corroborated with the CSM Calotest equipment (CSM Instruments, Peseux, Switzerland) using stainless steel balls of 30 mm in diameter and superfne diamond water suspension as the abrasive medium. Hardness and Young's modulus were studied following the method of Oliver and Pharr using indentations of 10 mN of maximum load, H E −1, and H 2 E −3 ratios have been related according to the studies carried out by Santiago et al[33,34]. To evaluate the adhesion between the substrate and coating, scratch tests were carried out with a REVETEST CSM equipped with a Rockwell EURO 150518C&N penetrator of 200 μm of tip radius, using loading rates of 100 N/ min, with a speed of 100 mm/min, and a fnal load of 100 N. Tree scratches were performed per sample.…”

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confidence: 99%

Adhesion Enhancement on a Duplex DLC HiPIMS Positive Pulse Coating Performed by Active Screen Plasma Nitriding Pretreatment on 316L Stainless Steel Substrate

Gómez

García

Santiago³

et al. 2022

Advances in Materials Science and Engineering

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Diamond-like carbon (DLC) coatings have been the object of research interest due to properties such as excellent wear resistance, low coefficient of friction, high hardness, high elastic modulus, and biocompatibility. Despite this, DLC has poor adhesion properties, which makes it challenging to use in industrial applications. The application of DLC using the high-power pulse magnetron sputtering (HiPIMS) technique with positive pulses has been studied. Seeking greater DLC coating adherence, the application of a nitriding pretreatment prior to the DLC coating has been studied to improve its adhesion to AISI316L stainless steel soft metal substrates, employing active screen plasma nitriding (ASPN). The influence of the different pretreatment temperatures to reach the maximum levels of adhesion has been analyzed. Scratch methods have been employed to assess adhesion. The elemental composition, morphology, and roughness of the samples have been studied, as well as the behavior of resistance to wear and friction. The results show an improvement in DCL adhesion. Critical loads (LC3) increase at higher pretreatment temperatures, from 48 N for the DLC to 82 N for the ASPN + DLC. Pretreatment has also been shown to be effective in maintaining excellent dry wear resistance properties and a low coefficient of friction.

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“…analysis of the performed investigations shows (Kablov, 2001;Shulov et al, 2010;Shulov et al, 2013;Shulov et al, 2015;Kosmin and Budinovsky, 2016) that both character and intensity of turbine blade damages at high temperature corrosion are determined by the following factors: (i) anti-corrosion properties of protective coatings, (ii) level of active static and vibration loads, (iii) operating temperature of turbine blades, as well as (iv) concentration of corrosion-active substances in fuel combustion products. In some cases, high-temperature corrosion acts as an independent disturbing factor (Budinovskii and Muboyadzhan, 2003;Shejko et al, 2017;Ivanov et al, 2018;Braceras et al, 2018). In this connection investigation of mechanisms of corrosion damage and its kinetics is one of the problems for developing new materials and coatings as well as making a system for monitoring technical condition of blades.…”

Section: Anmentioning

confidence: 99%

Effect of High-Current Electron Beam Irradiation on Resistance of Sulfide-Oxide Corrosion of Ni-Cr-Al-Y Ion-Plasma Coatings

Bytsenko¹,

Shatilov²,

Daneko³

et al. 2019

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Recently, the emergence of accelerators of high-current electron beams and powerful electron ion beams has contributed to the creation of unique effects of concentrated energy flows on materials. Upgrading of production processes and development of new technological processes of both domestic aircraft propulsion engineering and aviation arms remain topical and needed. Engine operational reliability depends on that of turbine blades. They are the most loaded details because they are experienced to action of static, dynamic and cyclic loadings as well as are subjected to cyclic thermal stresses. Therefore the main objective of our paper is to analyze the effect of high-current electron beam irradiation on-resistance of sulfide-oxide corrosion (SOC)of Ni-Cr-Al-Yion-plasma coatings. To achieve this purpose, beam irradiation was performed using the RITM-SP complex automated electron-beam setup. Modification of surface layer of SDP 2+VSDP16 ion-plasma coating by microsecond high-current electron beams of selected mode made it possible to increase considerably the SOC resistance. An analysis of the surface and microstructure of samples after SOC testing enabled to determine different effects of medium on sample coating depending on the state of the sample surface. When investigated samples microstructure, we found that after modification certain cracks on sample surface did not develop in the course of testing. It was found that some craters were not necessarily centers of corrosion damage origin, i.e., the existence of given types of craters and their impact on SOC resistance stability are ambiguous.

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Corrosion preserving high density plasma treatment of precipitation hardening stainless steel

Cited by 11 publications

References 17 publications

Electro-tribological properties of diamond like carbon coatings

Electro-tribological properties of diamond like carbon coatings

Adhesion Enhancement on a Duplex DLC HiPIMS Positive Pulse Coating Performed by Active Screen Plasma Nitriding Pretreatment on 316L Stainless Steel Substrate

Effect of High-Current Electron Beam Irradiation on Resistance of Sulfide-Oxide Corrosion of Ni-Cr-Al-Y Ion-Plasma Coatings

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