Mechanical Properties of Steel Surfaces Coated with HfN/VN Superlattices

Escobar, C.; Villarreal, M.; Caicedo, J.C.; Aperador, W.

doi:10.1007/s11665-014-1194-2

Cited by 11 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 4 illustrates the nanoindentation hardness and Young's modulus of the as-deposited multilayered Hf-N and Hf-Si-N coatings, which exhibit similar trends as varying the Si content. The hardness of the as-deposited Hf54N46 coatings was 22.3 ± 0.6 GPa, which is comparable to the reported values of 19−21 GPa [4,29,30] for HfN films prepared through sputtering. Seo et al [3] reported a high hardness value of 25.2 GPa for epitaxial HfN(001) layers.…”

Section: Multilayered Hf-si-n Coatingssupporting

confidence: 85%

Mechanical Properties and Oxidation Behavior of Multilayered Hf–Si–N Coatings

2018

View full text Add to dashboard Cite

Monolithic Hf-Si-N coatings and multilayered Hf-Si-N coatings with cyclical gradient concentration were fabricated using reactive direct current magnetron cosputtering. The structure of the Hf-Si-N coatings varied from a crystalline HfN phase, to a mixture of HfN and amorphous phases and to an amorphous phase with continuously increasing the Si content. The multilayered Hf 48 Si 3 N 49 coatings exhibited a mixture of face-centered cubic and near-amorphous phases with a maximal hardness of 22.5 GPa, a Young's modulus of 244 GPa and a residual stress of −1.5 GPa. The crystalline phase-dominant coatings exhibited a linear relationship between the hardness and compressive residual stress, whereas the amorphous phase-dominant coatings exhibited a low hardness level of 15-16 GPa; this hardness is close to that of Si 3 N 4 . Various oxides were formed after annealing of the Hf-Si-N coatings at 600 • C in a 1% O 2 -99% Ar atmosphere. Monoclinic HfO 2 formed after Hf 54 N 46 annealing and amorphous oxide formed for the oxidation-resistant Hf 32 Si 19 N 49 coatings. The oxidation behavior with respect to the Si content was investigated by using transmission electron microscopy and X-ray photoelectron spectroscopy.

show abstract

Section: Multilayered Hf-si-n Coatingssupporting

confidence: 85%

Mechanical Properties and Oxidation Behavior of Multilayered Hf–Si–N Coatings

2018

View full text Add to dashboard Cite

show abstract

“…State of interphase boundaries is factor that to greatest extent determines stability of structure and properties of multiperiod composite coatings [7,22]. Modeling of processes that may occur at border at nanometer size of layers is based on radiation-stimulated processes during deposition.…”

Section: Resultsmentioning

confidence: 99%

А Computer Simulation of Radiation-Induced Structural Changes and Properties of Multiperiod ZrNx/MoNx System

Sоbоl¹,

Meylekhov²,

Bochulia³

et al. 2017

J. Nano- Electron. Phys.

View full text Add to dashboard Cite

Influence of the period value Λ (at different negative potential Ub that supplied during deposition) on phase composition, structure, stress-strain state and hardness of multiperiod coatings ZrNx/MoNx is investigated by using complex methods of validation structural state at combined with microindentation. Formation in layers ZrNx and MoNx the phases with cubic lattice and preferred orientation of crystallites with axis [100] is established. Stress-strain state of compression with increasing Ub is amplified and reaches maximum value (-6.7 GPa) at Λ  20 nm and Ub -110 V. Hardness of coating increases with decreasing Λ from 300 to 20 nm. Coatings that obtained with Λ  20 nm and Ub -110 V have the highest hardness 44 GPa. Relaxation of structural compressive stresses and decreasing hardness is happening at smaller Λ and larger Ub -110 V (as a result of radiation-stimulated forming defect and mixing). Data of computer modeling of defectiveness at atomic level at bombardment of ions that accelerated in field Ub are used to explain the results.

show abstract

“…Previous studies by Caicedo et al detailed the employed deposition process, the characterization of physical-chemical and mechanical properties of this coating, including coating thickness, hardness, roughness, chemical composition, phases in the structure, adhesion with the substrate material, corrosion resistance, wear resistance, and microstructural examinations [33,[39][40][41].…”

Section: Coating Depositionmentioning

confidence: 99%

HfN Coating of ASSAB 17 Steel by PVD Method and its Effects on 6063-T5 Aluminum Alloy Turning

Ortiz¹,

Caicedo²,

Navarro-Devia³

et al. 2020

Tribol. Ind.

View full text Add to dashboard Cite

The industrial tool performance inspires the study of the machining of several materials with low production downtime. Aluminum is well-known for its high strength-to-weight ratio when compare both plastic and raft, thus making it advantageous for aerospace, construction and transport applications. However, aluminum machining damages the cutting tool with diverse wear mechanisms (adhesion, abrasion), thus suggesting a need for a new coating material. Previous studies show a high performance in abrasion resistance of Hafnium nitride [HfN] coated tools in turning of AISI1020 steel. This article evaluates the performance of [HfN] coated and uncoated burins (ASSAB 17) through roughing of Aluminum profiles by temperature sensing at the tool/material interface, workpiece roughness measurement and inspection of the cutting tool wear. Scanning electron microscopy and confocal microscopy were used to identify tool wear. A digital temperature sensing device displaying infrared long-wavelength was designed to examine the temperature due to its correlation on the tool wear. A significant improvement during aluminum roughing was observed with the use of [HfN] coatings, due to increase of the wear resistance of the ASSAB 17 burin, thus improving the surface finish.

show abstract

Mechanical Properties of Steel Surfaces Coated with HfN/VN Superlattices

Cited by 11 publications

References 28 publications

Mechanical Properties and Oxidation Behavior of Multilayered Hf–Si–N Coatings

Mechanical Properties and Oxidation Behavior of Multilayered Hf–Si–N Coatings

А Computer Simulation of Radiation-Induced Structural Changes and Properties of Multiperiod ZrNx/MoNx System

HfN Coating of ASSAB 17 Steel by PVD Method and its Effects on 6063-T5 Aluminum Alloy Turning

Contact Info

Product

Resources

About