Microstructure characterization of nano-structured Cr/Cr2N multilayer films produced through radio frequency magnetron sputtering

Marulanda, Diana; Lousa, A.; Martínez-de-Olcoz, L.; Olaya, Jhon J

doi:10.1016/j.tsf.2013.11.016

Cited by 6 publications

(5 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This phase is a A15 crystallographic structure, may occur in thin films, and is stabilized by impurities like oxygen or nitrogen [ 36 , 37 , 38 , 39 ]. The presence of δ-Cr is also found in previous multilayer Cr/Cr-N studies [ 40 , 41 ]. To complete the phase composition of the CrN diffractogram, is not possible to exclude the presence of the b.c.c α-Cr phase close to 2θ ≈ 44.3°, since these coatings presented a sub-stoichiometric composition (see Table 1 ) and oxygen was present as an impurity; thus, a wider peak.…”

Section: Resultssupporting

confidence: 82%

Cr-Based Sputtered Decorative Coatings for Automotive Industry

et al. 2021

View full text Add to dashboard Cite

The present work aims to study the impact of O and N addition on Cr-sputtered coatings on plastic (polycarbonate, PC) used in automobile parts, as a promisor alternative for auto part metallization, while eliminating the usage of toxic hexavalent chromium. The coatings were deposited using DC magnetron sputtering from a single pure Cr target in a reactive atmosphere (N2 and/or O2). The deposition of the coatings was performed maintaining the total pressure constant and close to 1 Pa by tuning Ar pressure while reactive gases were added. The target current density was kept at JW = 20 mA·cm−2. Structural characterization revealed a mixture of α-Cr, δ-Cr, β-Cr2N, and CrN crystalline structures as well as amorphous oxides. The coating hardness ranged from 9 GPa for the CrON coating to 15 GPa for the CrN coating. All deposited coatings showed a particularly good interface adhesion; adjusting the amount of O and N made it possible to tune the optical properties of the Cr-based coatings as desired. The promising results open future industrialization of sputtered Cr-based coatings for automotive industries.

show abstract

Section: Resultssupporting

confidence: 82%

Cr-Based Sputtered Decorative Coatings for Automotive Industry

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Whereas the sample Cr x N‐1 possesses a conductivity of 959 S cm −1 , Cr x N‐2 displays a value of 3376 S cm −1 . Comparative values in the literature are reported to vary from 1563 S cm −1 to 8334 S cm −1 , which strongly depends on the sub‐stoichiometry . On the contrary, aluminum metal possesses an electronic conductivity of 376 700 S cm −1 and chromium metal shows a value of 77 500 S cm −1 …”

Section: Resultsmentioning

confidence: 98%

“…Comparative values in the literature are reported to vary from 1563 Scm À1 to 8334Scm À1 ,w hich strongly depends on the sub-stoichiometry. [39,41] On the contrary,a luminum metal possesses an electronic conductivity of 376 700 Scm À1 and chromium metal shows avalue of 77 500 Scm À1 . [47,48]…”

Section: Characterization Of Ceramic Surface Coatings On Aluminummentioning

confidence: 99%

“…By utilizing the physical method of magnetron sputter deposition, two different coating types were prepared and characterized regarding their structure, electronic conductivity, and surface properties. Cr x N‐based ceramics are suitable as protective coatings owing to their relatively high electronic conductivity and relatively low Young's modulus [(190±50) GPa] . To improve the adhesion of this layer on the Al current collector, an interlayer of metallic chromium was deposited on the Al surface.…”

Section: Introductionmentioning

confidence: 99%

“…[38] By utilizing the physical methodo fm agnetron sputter deposition, two different coating types were prepared and characterizedr egarding their structure, electronic conductivity,a nd surface properties.C r x Nbased ceramics are suitable as protectivec oatings owing to their relatively high electronic conductivity and relatively low Young's modulus [(190 AE 50) GPa]. [39][40][41] To improve the adhesion of this layer on the Al current collector,a ni nterlayer of metallicc hromium wasd eposited on the Al surface. Besides the physicalc haracterization by meanso fX -ray diffraction (XRD), electronic conductivity measurements and surface investigationss uch as scanning electron microscopy (SEM) and Xray photoelectrons pectroscopy (XPS), electrochemical investigationst oe valuatet he anodic Al dissolution behavior were conducted.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Suppression of Aluminum Current Collector Dissolution by Protective Ceramic Coatings for Better High‐Voltage Battery Performance

et al. 2016

View full text Add to dashboard Cite

Batteries based on cathode materials that operate at high cathode potentials, such as LiNi Mn O (LNMO), in lithium-ion batteries or graphitic carbons in dual-ion batteries suffer from anodic dissolution of the aluminum (Al) current collector in organic solvent-based electrolytes based on imide salts, such as lithium bis(trifluoromethanesulfonyl) imide (LiTFSI). In this work, we developed a protective surface modification for the Al current collector by applying ceramic coatings of chromium nitride (Cr N) and studied the anodic Al dissolution behavior. By magnetron sputter deposition, two different coating types, which differ in their composition according to the CrN and Cr N phases, were prepared and characterized by X-ray diffraction, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and their electronic conductivity. Furthermore, the anodic dissolution behavior was studied by cyclic voltammetry and chronocoulometry measurements in two different electrolyte mixtures, that is, LiTFSI in ethyl methyl sulfone and LiTFSI in ethylene carbonate/dimethyl carbonate 1:1 (by weight). These measurements showed a remarkably reduced current density or cumulative charge during the charge process, indicating an improved anodic stability of the protected Al current collector. The coating surfaces after electrochemical treatment were characterized by means of SEM and XPS, and the presence or lack of pit formation, as well as electrolyte degradation products could be well correlated to the electrochemical results.

show abstract