Novel performance in physical and corrosion resistance HfN/VN coating system

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

doi:10.1016/j.surfcoat.2013.02.002

Cited by 25 publications

(10 citation statements)

References 25 publications

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“…The group IVB (Ti, Zr and Hf) metal nitride coatings possess extraordinary characteristics of hardness [1][2][3][4], corrosion resistance [5][6][7] and decoration [8], but demonstrate inadequate oxidation resistance [9,10]. Ti-Si-N [11,12] and Zr-Si-N [13,14] have displayed enhanced oxidation resistance by Si addition.…”

Section: Introductionmentioning

confidence: 99%

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

2018

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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.

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Section: Introductionmentioning

confidence: 99%

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

2018

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“…Also, HfN x possesses high electrical conductivity, large "phononic band gap", small real permittivity and high hardness [7][8][9][10]. These properties make HfN x a very promising candidate as counter electrode in dye sensitized solar cells [11], diffusion barrier in electronic devices [12], and protective coating to prevent abrasion and corrosion [13,14]. HfN is inherent super-conductor with relatively high Tc 8.8 K [8].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic modeling of the Hf-N system

Pang

Peng

Zhou

et al. 2018

J min metall B Metall

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Hf-N based alloys have been widely used and studied in the fields of electronic devices and cutting tools industry. A thermodynamic description of this system is essential for further materials development. By means of CALPHAD method, a thermodynamic modeling of the Hf-N system was carried out based on the available phase diagram data as well as thermodynamic property data. The Fcc phase is modeled as (Hf, Va)1(N, Va)1 to cover the composition range since the solubility of nitrogen in Fcc phase is reported up to about 52 at.%. A set of self-consistent thermodynamic parameters for the Hf-N system has been obtained. The computed phase diagrams and thermodynamic quantities using the present parameters agree well with the experimental data.

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“…These materials also have a high melting point and high hardness. Furthermore, they are chemically inert and have a refractory nature [25]. The coatings in the form of single layer of hafnium nitride (HfN) have been developed for use in the electronic industry, which explains why there is few literature concerning the mechanical and tribological properties.…”

Section: Introductionmentioning

confidence: 99%

Machining With Cutting Tool Coated With Monolayer Of HfN

2016

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In this study, AISI 1020 steel was machined by chip removal, in dry conditions, using ASSAB 17 tool bits with Hafnium Nitride (HfN) monolayer coating, deposited as a thin film via magnetron sputtering physical vapor deposition (PVD) technique, and uncoated tool bits, used as reference system. The surfaces of the machined steel were evaluated and characterized using Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM). The use of monolayer HfN coating on the tool bits was demonstrated to improve the surface finish of the workpiece and reduce cutting process time and cost.Keywords: Monolayer, Surface roughness, Machining, Cutting Tools, Hafnium Nitride. ResumenEn este trabajo, se realizó el mecanizado por arranque de viruta del acero AISI 1020, en condiciones de ausencia de lubricación; utilizando buriles de acero rápido ASSAB 17, con recubrimiento monocapa de Nitruro de Hafnio (HfN) depositados como película delgada, mediante la técnica de deposición física en fase vapor (PVD) magnetrón sputtering y con buriles sin recubrir, usados como sistemas de referencias. Posteriormente se evaluaron las superficies obtenidas en el acero mecanizado, caracterizándolas mediante microscopia de fuerza atómica (MFA) y microscopia electrónica de barrido (MEB). Se evidencio que el uso de recubrimientos monocapa de HfN sobre los buriles de acero rápido, mejoran el acabado superficial del material mecanizado, reduciendo los tiempos y costos del proceso de corte.

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Novel performance in physical and corrosion resistance HfN/VN coating system

Cited by 25 publications

References 25 publications

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

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

Thermodynamic modeling of the Hf-N system

Machining With Cutting Tool Coated With Monolayer Of HfN

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