Characterization of PVD Cr, CrN, and TiN coatings on SiC

Mouche, Peter A.; Ang, Caen; Koyanagi, Takaaki; Doyle, Peter J.; Katoh, Yutai

doi:10.1016/j.jnucmat.2019.151781

Cited by 31 publications

(11 citation statements)

References 49 publications

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“…Through this study, the authors found that when the substrate was subjected to a heat treatment of 400 °C, the adhesion of the coatings was about 154% higher than in the uncoated condition, and that the coatings created exhibited an antibacterial performance superior to those usually applied, a property of high interest given its application on surgical instruments. The study presented by Mouche et al [13] presented a characteristic of high interest with the deposition of Cr, CrN, and TiN films on substrates of a composite ceramic matrix (SiC) in order to study these coatings for a nuclear water reactor where the walls often crack. The authors concluded in the study that the coating using the three studied multilayered films was the most suitable to prevent and retard the propagation of cracks.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Thin Chromium Coatings Produced by PVD Sputtering for Optical Applications

et al. 2021

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PVD (physical vapor deposition) and CVD (chemical vapor deposition) have gained greater significance in the last two decades with the mandatory shift from electrodeposition processes to clean deposition processes due to environmental, public safety, and health concerns. Due to the frequent use of coatings in several industrial sectors, the importance of studying the chromium coating processes through PVD–sputtering can be realized, investing in a real alternative to electroplated hexavalent chromium, usually denominated by chromium 6, regularly applied in electrodeposition processes of optical products in the automotive industry. At an early stage, experimental tests were carried out to understand which parameters are most suitable for obtaining chromium coatings with optical properties. To study the coating in a broad way, thickness and roughness analysis of the coatings obtained using SEM and AFM, adhesion analyzes with the scratch-test and transmittance by spectrophotometry were carried out. It was possible to determine that the roughness and transmittance decreased with the increase in the number of layers, the thickness of the coating increased linearly, and the adhesion and resistance to climatic tests remained positive throughout the study. Thus, this study allows for the understanding that thin multilayered Cr coatings can be applied successfully to polymeric substrates regarding optical applications in the automotive industry.

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Section: Introductionmentioning

confidence: 99%

Characterization of Thin Chromium Coatings Produced by PVD Sputtering for Optical Applications

et al. 2021

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“…This technique has vertical resolution at the nm level and can identify which elements are present within a sample, quantify the concentration of elements in a sample, and in this research application case, measure coating thickness within a sample. GDOES has been used to measure coating thickness and elemental composition in several applications [ 60 , 61 , 62 ]; however, as this technique is destructive in nature, this method is assessed as not feasible for this application.…”

Section: Offline Coating Thickness Test Methodsmentioning

confidence: 99%

Continuous In-Line Chromium Coating Thickness Measurement Methodologies: An Investigation of Current and Potential Technology

Jones

Uggalla

et al. 2021

Sensors

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Coatings or films are applied to a substrate for several applications, such as waterproofing, corrosion resistance, adhesion performance, cosmetic effects, and optical coatings. When applying a coating to a substrate, it is vital to monitor the coating thickness during the coating process to achieve a product to the desired specification via real time production control. There are several different coating thickness measurement methods that can be used, either in-line or off-line, which can determine the coating thickness relative to the material of the coating and the substrate. In-line coating thickness measurement methods are often very difficult to design and implement due to the nature of the harsh environmental conditions of typical production processes and the speed at which the process is run. This paper addresses the current and novel coating thickness methodologies for application to chromium coatings on a ferro-magnetic steel substrate with their advantages and limitations regarding in-line measurement. The most common in-line coating thickness measurement method utilized within the steel packaging industry is the X-ray Fluorescence (XRF) method, but these systems can become costly when implemented for a wide packaging product and pose health and safety concerns due to its ionizing radiation. As technology advances, nanometer-scale coatings are becoming more common, and here three methods are highlighted, which have been used extensively in other industries (with several variants in their design) which can potentially measure coatings of nanometer thickness in a production line, precisely, safely, and do so in a non-contact and non-destructive manner. These methods are optical reflectometry, ellipsometry and interferometry.

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“…6,7 For example, CrN coatings are highly used in industry as hard coatings to protect the sub-strate against wear, fatigue, corrosion, and other surfacerelated damage. [8][9][10][11][12] Investigations have indicated that the presence of an intermetallic layer between nitride layers and the formation of a multilayer structure results in the stop of the nitride columnar structure and as a result the corrosion behavior is improved. [13][14][15][16] In addition, it is expected that by creating a multilayer coating, the hardness and failure toughness of the coating will improve and along with reducing the friction coefficient, the wear resistance will improve in comparison to the single-layer coating.…”

Section: Introductionmentioning

confidence: 99%

Comparison of electrochemical behavior of CrN single‐layer coating and Cr/CrN nanolayered coating produced by cathodic arc evaporation physical vapor deposition

Jasempoor

Elmkhah

Imantalab

et al. 2022

Int J Applied Ceramic Tech

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The aim of the present work is to study the CrN single‐layer coating and the Cr/CrN nanolayered coating by cathodic arc evaporation physical vapor deposition (CAE‐PVD) on AISI 304 stainless steel and to assess the electrochemical behavior of the coatings. Field emission scanning electron microscopy (FE‐SEM) and X‐ray diffraction (XRD) were utilized to study the morphology and microstructure of the coatings. The mechanical behavior of the coatings was studied by the nanoindentation technique. The electrochemical behavior of the formed coatings in 3.5 wt.% NaCl solution was investigated via electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) tests. Based on the microscopic images, it was realized that both CrN and Cr/CrN coatings were formed having a dense structure on the substrate. The results of EIS measurements showed gradual changes in the polarization resistance of the Cr/CrN nanolayered coating during the immersion time. However, significant changes in the polarization resistance of the CrN single‐layer coating were seen by increasing immersion time comparing with the Cr/CrN coating. The higher polarization resistance of the Cr/CrN coating can be attributed to the effects of the interface between the layers in comparison to the CrN coating.

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Characterization of PVD Cr, CrN, and TiN coatings on SiC

Cited by 31 publications

References 49 publications

Characterization of Thin Chromium Coatings Produced by PVD Sputtering for Optical Applications

Characterization of Thin Chromium Coatings Produced by PVD Sputtering for Optical Applications

Continuous In-Line Chromium Coating Thickness Measurement Methodologies: An Investigation of Current and Potential Technology

Comparison of electrochemical behavior of CrN single‐layer coating and Cr/CrN nanolayered coating produced by cathodic arc evaporation physical vapor deposition

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