CrN/NbN coatings
CrN/NbN coatings deposited by HIPIMS: A preliminary study of erosion corrosion performance
... PVD coatings has become more significant with PVD coatings achieving new horizons in the automotive and aerospace ...sector. CrN/NbN PVD coatings have been developed to achieve high ...
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Growth defects in CrN/NbN coatings deposited by HIPIMS/UBM techniques
... both coatings. The wear profiles of the coatings are shown in ...the coatings, which subsequently made the friction behaviour unsteady and increased the µ ...
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Structure of duplex CrN/NbN coatings and their performance against corrosion and wear
... In this work three different pulse plasma nitriding processes were carried out prior to the CrN/NbN PVD coating to attain high surface hardness and enhanced load bearing behaviour for S154 high strength ...
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CrN/NbN coatings deposited by HIPIMS : a preliminary study of erosion-corrosion performance
... PVD coatings has become more significant with PVD coatings achieving new horizons in the automotive and aerospace ...sector. CrN/NbN PVD coatings have been developed to achieve high ...
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CrN/NbN coatings deposited by HIPIMS : a preliminary study of erosion-corrosion performance
... This is an author produced version of a paper published in Surface and Coatings Technology, 204 (8). pp. 1158-1162. ISSN 0257-8972. This version has been peer-reviewed but does not include the final publisher ...
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Novel HIPIMS deposited nanostructured CrN/NbN coatings for environmental protection of steam turbine components
... 12.17) offers good protection against oxidation of P92. The excellent oxidation resistance of this coating was demonstrated by cross sectional SEM analyses, which showed that for the selected test conditions, the coating ...
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Effect of chamber pressure on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN Coatings
... showed higher friction values (µ = 0.69 and 0.70 respectively) because of the non-lubricious nature of the niobium oxides. An additional study was conducted to understand the influence of defect density on tribological ...
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Effect of chamber pressure on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN Coatings
... showed higher friction values (µ = 0.69 and 0.70 respectively) because of the non-lubricious nature of the niobium oxides. An additional study was conducted to understand the influence of defect density on tribological ...
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Effect of substrate bias voltage on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN coatings
... of the influence of bias voltage on the formation of morphological defects is the particular research interest. Coating defects are undesirable because they degrade the coating properties [1,6,9,16,27–30]. For example, ...
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Enhancing the tribological properties of CrN/NbN nanoscale multilayer PVD coatings
... The substrate material also affects the corrosion resistance. This is critical at the defect locations where the solution can penetrate the coating and cause corrosion of the substrate. In this work the use of commercial ...
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Corrosion resistance of CrN/NbN superlattice coatings grown by various physical vapour deposition techniques
... Arc CrN/NbN superlattice coatings The corrosion resistance of the PVD coatings depends not only on the degree of porosity resulting mainly from the structural defects but also from factors, ...
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Deposition of nanoscale multilayer CrN/NbN physical vapor deposition coatings by high power impulse magnetron sputtering
... study, CrN/NbN coatings were synthesised in a sequence of three steps – pre-treatment, base layer deposition, and bulk coating deposition comprising of nanoscale multilayer ...
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Deposition of nanoscale multilayer CrN/NbN physical vapor deposition coatings by high power impulse magnetron sputtering
... study, CrN/NbN coatings were synthesised in a sequence of three steps – pre-treatment, base layer deposition, and bulk coating deposition comprising of nanoscale multilayer ...
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Substrate finishing and niobium content effects on the high temperature corrosion resistance in steam atmosphere of CrN/NbN superlattice coatings deposited by PVD HIPIMS
... 7 In Fig. 4, two representative cross-sections of the high Nb-CrN/NbN coatings but different substrate surface finishing are compared. PVD coating techniques is a line of sight process i.e. in order ...
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Analytical studies of corrosion and wear resistant CrN/NbN superlattice PVD coatings
... ing technique.1 By polarising the substrates with a negativ e bias voltage, typically — 1200 V, m etal ions generated d uring vigorous evaporation in the cath odic arc discharge initiate high in v a c u o etching rates ...
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Performance of HIPIMS deposited CrN/NbN nanostructured coatings exposed to 650°C in pure steam environment
... Figure 10 shows the cross-sectional SEM image of the CrN/NbN coating exposed to 2000 h of steam oxidation at 650 ºC. Through-thickness cracks can be observed and are likely due to thermal expansion ...
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Oxidation behavior of AlN/CrN multilayered hard coatings
... In contrast, the microstructure of the h-AlN/CrN sys- tem consists of equiaxed grains within each layer and does not exhibit a columnar grain structure. In this case both, the GBs as well as the incoherent ...
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TEM studies of the wear of TiAlN/CrN superlattice coatings
... generation coatings (e.g. TiAlCrN). Third generation coatings have only recently been developed and little is known about their wear behaviour, in particular the effect the multilayer structure has on the ...
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Multilayer coatings based on CrN/Cr for molds of plastics
... The coatings have been depos- ited by an industrial cathodic arc system Sulzer Metaplas MZ333/028 equipped with 8 ...of CrN, the temperature of deposition is kept at 500 ...The coatings produced ...
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Effect of deuterium implantation dose on properties of CrN coatings
... as-deposited CrN coating the penetration dia- gram is typical, ...for CrN coatings irradiated at a dose of ...netron coatings with 360 keV Xe ions at a dose of 8·10 14 ions/cm 2 that explained ...
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