Enhancement of surface mechanical properties by using TiN[BCN/BN]n/c-BN multilayer system

Moreno, H.; Caicedo, J.C.; Amaya, C.; Muñoz-Saldaña, J.; Yate, Luis; Esteve, J.

doi:10.1016/j.apsusc.2010.08.024

Cited by 21 publications

(8 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to this model, each interface in the multilayer system works like a grain boundary, such that dislocations pile-up at the interfaces and harden the layer by strain [12,33,34]. The enhancement of mechanical properties for TiN/TiAlN multilayers is in accordance with the increase in hardness as it has been shown in multilayer-type coatings for diverse material systems (e.g., TiCN/TiNbCN [12], CrN/AlN [35], TiN/VN, TiN/TiAlN and TiN[BCN/BN]n/c-BN [34,36,37]. Furthermore, a dependence of the elasticity with the bilayer number (n) or bilayer period (Λ) was observed, the highest bilayer number corresponds to the highest elastic modulus.…”

Section: Hardness and Elastic Modulussupporting

confidence: 52%

Nature in corrosion–erosion surface for [TiN/TiAlN]n nanometric multilayers growth on AISI 1045 steel

et al. 2012

Self Cite

View full text Add to dashboard Cite

The aim of this work is to characterize the electrochemical behavior of [TiN/TiAlN]n multilayer coatings under corrosion-erosion condition. The multilayers with bilayer numbers (n) of 2, 6, 12, and 24 and/or bilayer period (Λ) of 1500 nm, 500 nm, 250 nm, 150 nm and 125 nm were deposited by magnetron sputtering technique on Si (100) and AISI 1045 steel substrates. Both, the TiN and the TiAlN structures for multilayer coatings were evaluated via X-ray diffraction (XRD) analysis.Mechanical and tribological properties were evaluated via nanoindentation measurements and scratch test, respectively. Silica particles were used as abrasive material on corrosion-erosion test in 0.5M of H 2 SO 4 solution at impact angles of 30º and 90º over surface. The electrochemical characterization was carried out using the polarization resistance technique (Tafel), in order to observe changes in corrosion rate as a function of the bilayer number (n) or the bilayer period (Λ) and the impact angle. Corrosion rate values of 359 mpy for uncoated steel substrate and 103 mpy for substrate coated with n = 24 (Λ = 125 nm) under an impact angle of 30º were found. On the other hand, for an impact angle of 90º the corrosion rate exhibited 646 mpy for uncoated steel substrate and 210 mpy for substrate coated with n = 24 (Λ = 125 nm). This behavior was correlated with the curves of mass loss for both coated samples and the surface damage was analyzed via SEM 2 images for the two different impact angles. These results indicate that TiN/TiAlN multilayer coatings deposited on AISI 1045 steel represent a practical solution for applications in corrosiveerosive environments.

show abstract

Section: Hardness and Elastic Modulussupporting

confidence: 52%

Nature in corrosion–erosion surface for [TiN/TiAlN]n nanometric multilayers growth on AISI 1045 steel

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…Two characteristics peak at ∼1391 and ∼815 cm –1 are due to the in-plane B–N and out-of-plane B–N–B bending bond vibration of h-BN, respectively. The IR spectrum shows a prominent wide band absorption around 2800–3600 cm –1 due to the N–H bond . The stretching vibrations of the tetrahedral iron–oxygen bond and nickel–oxygen bond vibration in the octahedral sites of nickel ferrite are responsible for the IR absorption peak at 563 and 420 cm –1 , respectively (Figure a) .…”

Section: Resultsmentioning

confidence: 99%

“…The IR spectrum shows a prominent wide band absorption around 2800−3600 cm −1 due to the N−H bond. 47 The stretching vibrations of the tetrahedral iron−oxygen bond and nickel− oxygen bond vibration in the octahedral sites of nickel ferrite are responsible for the IR absorption peak at 563 and 420 cm −1 , respectively (Figure 3a). 48 According to the IR spectra in Figure 3a, as there is no shifting of the FTIR spectrum, we can conclude that there is no bonding between h-BN and nickel ferrite.…”

Section: Ftir Analysismentioning

confidence: 99%

Influence of Exfoliated Boron Nitride for Fabrication of a Lightweight Wideband Microwave Absorbing Material

Siddiki

Maity

Verma

et al. 2023

ACS Appl. Eng. Mater.

View full text Add to dashboard Cite

The study of electromagnetic (EM) wave absorbing materials is a natural response to ever-worsening EM wave pollution in modern days. Several nanomaterials have been explored as wideband, low-thickness, and lightweight microwave absorbing materials (MAMs) for use in both military and civilian realms but require significant improvement. This work presents the synthesis and charcaterization of in situ exfoliated boron nitride coated nickel ferrite (NiFBN) with excellent porous microstructure, using a simple auto-combustion method as well as the fabrication of a NiFBN-multiwalled carbon nanotube (MWCNT)epoxy-based lightweight, thin nanocomposite for wideband microwave absorption (X-band). With a 2 mm thick sample, the 15-NiFBN-0.75_2mm nanocomposite exhibits effective absorption bandwidth (EAB) of 3.9 GHz and −59.38 dB reflection loss minima (RL min ). Several percentages of boron nitride with nickel ferrite were synthesized using the sol−gel auto-combustion process, and the MWCNT percentage was adjusted for enhanced microwave absorption.

show abstract

“…No clear signals are recorded for duty cycles lower than 45% of P. Some peaks appear as the nitrogen injection time increases and become more significant when the duty cycle exceeds 55% of P. A broad asymmetric band appears close to 1390 cm −1 and clearly develops as dc reaches 90% of P, which is mainly assigned to the characteristic absorption of hexagonal BN (in-plane B-N bond stretching) in a Ti-B-N single layer [43,44]. Similarly, a broad and significant signal is measured around 738 cm −1 related to the B-N-B bending mode occurring in the amorphous boron nitride [37], and a second signal is associated with the transverse optical mode of the cubic BN phase at 1108 cm −1 [45,46]. A narrow and intense peak can also be noticed at 610 cm −1 , with a few weak peaks between 500 and 600 cm −1 .…”

Section: Composition and Structurementioning

confidence: 96%

Tunable Electrical Properties of Ti-B-N Thin Films Sputter-Deposited by the Reactive Gas Pulsing Process

et al. 2022

View full text Add to dashboard Cite

Titanium-boron-nitrogen (Ti-B-N) thin films were deposited by RF reactive magnetron sputtering using a titanium diboride (TiB2) target in an argon + nitrogen mixture. The argon mass flow rate was kept constant, whereas that of nitrogen was pulsed during the deposition. A constant pulsing period of P = 10 s was used, and the introduction time of the nitrogen gas (duty cycle (dc)) was systematically varied from dc = 0 to 100% of the pulsing period. This reactive gas pulsing process allowed the deposition of Ti-B-N thin films with various boron and nitrogen concentrations. Such adjustable concentrations in the films also led to changes in their electronic transport properties. Boron and nitrogen contents exhibited a reverse evolution as a function of the nitrogen duty cycle, which was correlated with the transition from a metallic to semiconducting-like behavior. A percolation model was applied to the electrical conductivity as a function of the nitrogen pulsing parameters, assuming some correlations with the evolution of the Ti-B-N thin film nanostructure.

show abstract

Enhancement of surface mechanical properties by using TiN[BCN/BN]n/c-BN multilayer system

Cited by 21 publications

References 33 publications

Nature in corrosion–erosion surface for [TiN/TiAlN]n nanometric multilayers growth on AISI 1045 steel

Nature in corrosion–erosion surface for [TiN/TiAlN]n nanometric multilayers growth on AISI 1045 steel

Influence of Exfoliated Boron Nitride for Fabrication of a Lightweight Wideband Microwave Absorbing Material

Tunable Electrical Properties of Ti-B-N Thin Films Sputter-Deposited by the Reactive Gas Pulsing Process

Contact Info

Product

Resources

About