Adrien Van Gorp's research while affiliated with French National Centre for Scientific Research and other places

Publications (24)

Article
Full-text available
This paper deals with the experimental investigation of the effect of impregnation process on the normal magnetization curve and iron losses of electrical steels. To address this issue, several laminated toroidal magnetic circuits have been designed to characterize the magnetic properties with the flux metric method. The first configuration conside...
Article
In the present work, a Si/Zr based sol–gel (SG) coating was deposited on 316L stainless steel plates, previously treated by passivation (SSO) or electropolishing (SSEP) producing two different surface states. The SG coatings were compared for SSO and SSEP substrates in terms of morphology, topography and tribocorrosion response. The coating topogra...
Article
Full-text available
In this article, an experimental procedure is presented to handle magnetic measurements under uniaxial tensile stress reaching the plastic domain. The main advantage of the proposed procedure is that it does not require an additional magnetic core to close the magnetic flux path through the studied sample. The flux flows only in the sample, and no...
Article
This investigation addresses the effect provided by industrial surface finishes on the tribocorrosion properties of 316L stainless steel exposed to NaCl solution. Three distinct surface treatments were evaluated: passivation (SSO), electropolishing-passivation (SSEP) and micro-undulation (SSM mechano-chemical + electropolishing + passivation). For...
Article
The impact of different industrial surface treatments, such as electropolishing and micro-undulation, on the mechanical and corrosion properties of cold-rolled 316L stainless steel has been investigated. The nature of the passive layers created by the three surface finishes led not only to chemical differences as determined by XPS analysis, but als...
Article
Full-text available
Resumen Las propiedades de los recubrimientos a base de circonia estabilizada con ytria (YSZ) confieren a estos un excelente desempeño en una amplia gama de aplicaciones que van desde el uso odontológico hasta barreras térmicas, incluyendo también su empleo como electrolitos sólidos en celdas de combustible. En el presente trabajo, se depositaron r...
Article
Full-text available
In the literature, the most studies conducted on the flat surface ball-burnishing process have been focused on the most important classical factors like burnishing speed, lateral feed, and the ball-burnishing load or pressure on the treated surfaces integrity enhancement. In this research, ball-burnishing strategies are studied as a new ball-burnis...
Article
Numerous methods have been proposed to estimate the indentation fracture toughness Kic for brittle materials. These methods generally uses formulæ established from empirical correlations between critical applied force, or average crack length, and classical fracture mechanics tests. This study compares several models of fracture toughness calculati...
Article
This article proposes to analyze the relation between gloss and roughness of surfaces of polypropylene samples abraded at different magnitudes. Experiments consist of mechanical polishing at different grades, roughness profiles measurement, and specular light reflectometry with three incidence angles of resulting surfaces. About 100 roughness param...
Article
Considerable improvement in the tribological response was achieved during sliding wear tests against alumina ball, when AA 2024-T3-aluminium alloy substrate was coated with DLC/NiP duplex coating. Quantitative EPMA analysis carried out on the coated sample cross-section coupled with nanoindentation techniques allowed the identification of the coate...
Article
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Nanostructured yttria-stabilized zirconia coatings for applications in high-temperature environments can be deposited by suspension plasma spraying (SPS) techniques. The present research has been conducted in order to study the sliding wear response of a SPS ZrO2–8% mol. Y2O3 coating (75 μm in thickness) deposited onto a Haynes 230 substrate, using...
Article
Full-text available
In this paper an inverse finite element procedure was developed to assess the true-stress strain relationship of a DP dual phase. Experiments were performed both by means of instrumented indentation and small punch tests on small samples cut in the same steel sheet. Tests are developed on a Zwick macro-hardness tester. Single test are first propose...
Article
Full-text available
Les auteurs remercient MM. Gaetan Starzyk, Florian Baratto et Nicolas Charoy pour le travail effectue lors de leur projet de fin d’etude ingenieur Arts et Metiers au centre de Lille, travail qui a permis la mise en place du dispositifd’essai et la realisation des essais mecaniques de caracterisation des echantillons. De meme, nous remercions Arcelo...
Article
This paper outlines a new method to evaluate roughness parameters considering the scale used for their evaluation. Application is performed for grinding hardened steel with abrasive belts. Seven working variables are considered through a two-level experimental design. For all configurations, 30 surface profiles were recorded by tactile profilometry...
Article
The roughness of polymer surfaces is often investigated to guarantee both the surface integrity and the surface functionality. One of the major problems in roughness measurement analyses consists in determining both the evaluation length and the reference line (i.e., the degree of the polynomial equation) from which roughness parameters are compute...
Article
The characterization of functional surfaces is done mainly by roughness which can be quantified by many parameters. In order to select relevant roughness parameters, a multiscale discriminant method is proposed and applied to characterize high-precision turned surfaces. First, surfaces are characterized by a single roughness parameter and secondly...
Article
This paper proposes a new multi-scale measurement approach performed to compare the surface roughness and the visual aspect of polished surfaces. In this investigation, five specimens of glass moulds presenting different visual aspects are considered. All roughness profiles assessed by tactile profilometry were rectified by a first degree polynomia...
Article
After one hour immersion (adsorption) in nano-colloidal suspensions, mesoscopic (μm scale) aggregation networks of gold nanoparticles (25 nm) are formed on a methyl/amine terminated surface (CH3/NH2) and followed by the substrate drying. A Monte Carlo simulation is then performed to model these patterns in microscopic scale. It is revealed that a t...

Citations

... Crevice corrosion may occur under the deposits, impurities, or in locations where the aggressive chloride medium is retained for a longer period due to poor design solutions [2][3][4][5]. Improvement of the stainless steel corrosion resistance can be achieved by the chemical modification of the steel surface using the corrosion inhibitors, as well as by protective amorphous or crystalline coatings, such as TiO2, ZrO2 or SiO2 thin films or their mixtures [6][7][8][9], low-temperature plasma carburizing, nitriding, combined carburizing and nitriding, etc. [10][11][12]. Ceramic coatings can be deposited on the substrate by several various techniques that have been developed for this purpose. ...
... However, for some steels (such as 45# steel, Q235 steel and 316L stainless steel) with low hardness, poor wear resistance severely restricts their more extensive applications as friction components in engineering fields [3]. Moreover, when they are used in a harsh corrosive circumstance, the chemical dissolution will further accelerate their failure [4,5]. Many surface modification methods have been utilized to improve the wear resistance of some steels by preparing a high-hardness coatings on them (such as plasma metallizing technique [6], ion chemical heat treatment [7,8], ion deposition [9,10], thermal spraying [11], electroplating [12], magnetron sputtering [13], spark deposition [14] and electron beam treatment [15][16][17]). ...
... In this latter case, the impact of manufacturing processes on the magnetic properties of electrical steels may be significant. In the literature, the most commonly studied processes are the cutting, welding, pressing or shrink-fitting [1][2][3][4][5] of laminations or magnetic cores. However, for some specific industrial applications such as large alternators, the magnetic circuits are impregnated, under vacuum pressure followed by a heat treatment, with a dielectric resin. ...
... The most widely used stainless steel in a marine environment is AISI 316L, which nevertheless may be susceptible to crevice corrosion in seawater due to unfavorable structural design or manufacturing processes. Crevice corrosion may occur under the deposits, impurities, or in locations where the aggressive chloride medium is retained for a longer period due to poor design solutions [2][3][4][5]. Improvement of the stainless steel corrosion resistance can be achieved by the chemical modification of the steel surface using the corrosion inhibitors, as well as by protective amorphous or crystalline coatings, such as TiO2, ZrO2 or SiO2 thin films or their mixtures [6][7][8][9], low-temperature plasma carburizing, nitriding, combined carburizing and nitriding, etc. [10][11][12]. Ceramic coatings can be deposited on the substrate by several various techniques that have been developed for this purpose. ...
... For example, in [3,4] the impact of several manufacturing processes on the magnetic properties of NO electrical steel sheet is investigated, it shows a magnetic behavior degradation as well as significant iron loss increase. Some studies are focused on quantifying the impact of manufacturing process on magnetic properties like the cutting techniques [5][6][7][8]. In [9] for example, the authors show that the iron loss can be reduced by about 5.8% when minimizing the cutting clearance of a punching process. ...
... In order to reduce the impact of the manufacturing process, three approaches are proposed in the literature. The first approach consists in determining the influence of each step of the process [18] and find the optimal process parameters that could result in less degradation of the magnetic material behavior. The second approach focuses on magnetic properties recovery via heat treatment application after manufacturing. ...
... The authors stated that the VA of 8 lm, SF of 38 N, and f r of 1000 mm/min could be selected to enhance the burnishing responses. The impacts of different burnishing strategies on the R s of the burnished 2017A-T451 aluminum alloy were analyzed by Amdouni et al. [11]. The authors stated that perpendicular passes could help to improve surface integrity. ...
... (2)) [15], where K ic is fracture toughness, c is average length of the cracks obtained in the tips of the Vickers marks, a is half average length of the diagonal of the Vickers marks and H is Vickers hardness. Hervas et al., in their comparison of 7 methods using Vickers indentation, reported that the Evan's method gave consistent results for all the brittle materials tested [38]. Bolelli et al. used the Evan's equation to measure the fracture toughness of glazes [39]. ...
... Bataille et al. [3] studied the stick-slip phenomenon present on rods and showed that the average roughness (Sa) is not relevant while average slopes (Sdq) explain this phenomenon. Van Gorp et al. [4] demonstrated that the brightness of surfaces abraded by paper is directly correlated to the peaks' radii of curvatures. Gloss correlates more strongly with the radius of curvature than it does the paper grade. ...
... Scientists have investigated nanostructured YSZ coatings, concluding that their tribological properties have been enhanced in terms of wear rate and friction coefficient compared to traditional films (Kossman et al., 2014). Ghasemi et al. (2013) compared the wear and mechanical properties of regular and nano-structured TBCs. ...