Mechanical and electrochemical properties of a sputter-deposited β-Ta 5 Si 3 nanocrystalline coating

Xu, Jiang; Cheng, Jue; Jiang, Shuyun; Munroe, Paul; Xie, Zonghan

doi:10.1016/j.jallcom.2016.12.413

Cited by 15 publications

(2 citation statements)

References 61 publications

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“…Among high-temperature materials, transition metal silicide (TMS) is a very promising high-temperature structural material, which has a stronger development prospect than the traditional nickel-based materials [1][2][3][4][5][6]. In recent years, TMS has received more and more attention because of its excellent thermoelectric performance, low cost and good physical and chemical properties [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

The vacancy defects and oxygen atoms occupation effects on mechanical and electronic properties of Mo₅Si₃ silicides

Chen

Zhang

Yang

et al. 2021

Commun. Theor. Phys.

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Improving brittle behavior and mechanical properties is still a big challenge for high-temperature structural materials. By means of first-principles calculations, in this paper, we systematically investigate the effect of vacancy and oxygen occupation on the elastic properties and brittle-or-ductile behavior on Mo5Si3. Four vacancies (Si–Va1, Si–Va2, Mo–Va1, Mo–Va2) and oxygen occupation models (O–Mo1, O–Mo2, O–Si1, O–Si2) are selected for research. It is found that Mo–Va2 vacancy has the stronger structural stability in the ground state in comparison with other vacancies. Besides, the deformation resistance and hardness of the parent Mo5Si3 are weakened due to the introduction of different vacancy defects and oxygen occupation. The ratio of B/G indicates that oxygen atoms occupation and vacancy defects result in brittle-to-ductile transition for Mo5Si3. These vacancies and the oxygen atoms occupation change the localized hybridization between Mo–Si and Mo–Mo atoms. The weaker O–Mo bond is a contributing factor for the excellent ductile behavior in the O-Si2 model for Mo5Si3.

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Section: Introductionmentioning

confidence: 99%

The vacancy defects and oxygen atoms occupation effects on mechanical and electronic properties of Mo₅Si₃ silicides

Chen

Zhang

Yang

et al. 2021

Commun. Theor. Phys.

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“…There are significant differences in the mechanical and chemical behavior of traditional metals concerning nanocomposites or nanocrystalline arrangements [35]. The corrosion rate of SS304 increased from 0.0032 mm * year-1 to 0.0067 mm * year-1 when the temperature changed from 25 to 80 °C (figure 13).…”

Section: Electrochemical Evaluationmentioning

confidence: 99%

Synthesis of TiB₂-Ni₃B nanocomposite coating by DC magnetron sputtering for corrosion-erosion protection

Hernández¹,

Juarez

Basurto

et al. 2021

Mater. Res. Express

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Significant contribution on corrosion-erosion resistance of Ni3B-TiB2 nanocomposite coating of 1µm of thickness, deposited by DC magnetron Sputtering on stainless steel 304 substrates was studied. Nickel phase (γ Ni) plus Ni3B-TiB2 phases were synthesized previously by Mechanical Alloying (MA). Solid cathode (76.2 mm of diameter and 3 mm of thickness) used to grow thin films was manufactured with the alloyed powders, applying a uniaxial load of 70 MPa at room temperature and sintered at 900° C for two hours. Microstructure and mechanical properties of the coatings were characterized by X-Ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), nanoindentation, and wear test with a ball-on-disc tribometer. Compact coating of Ni3B-TiB2 with a microstructure of prismatic crystals after annealing treatment, showing a uniform coating with good adherence and low friction coefficient of 0.5, correlated with a low roughness of Ra ≈ 0.0439±0.0069 µm. The average hardness of 537.4 HV (5265.0 MPa) and wear coefficient at room temperature of 2.552E-10 m2N-1 correspond with medium-hard phases with an elastic-plastic behavior suitable for fatigue applications. Geothermal fluid modified was synthesized in the lab with NaCl/Na2SO4 to evaluate the corrosion resistance of the films in a standard three electrodes cell, characterizing a corrosion rate of 0.0008 and 0.001 mm*year-1 at 25 and 80°C respectively during 86.4 ks (24 h) of exposition; showing a resistive coating without corrosion products and with good response to the geothermal environment.

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A combined surface treatment of surface texturing-double glow plasma surface titanizing on AISI 316 stainless steel to combat surface damage: Comparative appraisals of corrosion resistance and wear resistance

Lin

Zhang

Zou

et al. 2019

Applied Surface Science

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Mechanical and electrochemical properties of a sputter-deposited β-Ta 5 Si 3 nanocrystalline coating

Cited by 15 publications

References 61 publications

The vacancy defects and oxygen atoms occupation effects on mechanical and electronic properties of Mo₅Si₃ silicides

The vacancy defects and oxygen atoms occupation effects on mechanical and electronic properties of Mo₅Si₃ silicides

Synthesis of TiB₂-Ni₃B nanocomposite coating by DC magnetron sputtering for corrosion-erosion protection

A combined surface treatment of surface texturing-double glow plasma surface titanizing on AISI 316 stainless steel to combat surface damage: Comparative appraisals of corrosion resistance and wear resistance

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Mechanical and electrochemical properties of a sputter-deposited β-Ta 5 Si 3 nanocrystalline coating

Cited by 15 publications

References 61 publications

The vacancy defects and oxygen atoms occupation effects on mechanical and electronic properties of Mo5Si3 silicides

The vacancy defects and oxygen atoms occupation effects on mechanical and electronic properties of Mo5Si3 silicides

Synthesis of TiB2-Ni3B nanocomposite coating by DC magnetron sputtering for corrosion-erosion protection

A combined surface treatment of surface texturing-double glow plasma surface titanizing on AISI 316 stainless steel to combat surface damage: Comparative appraisals of corrosion resistance and wear resistance

Contact Info

Product

Resources

About

The vacancy defects and oxygen atoms occupation effects on mechanical and electronic properties of Mo₅Si₃ silicides

The vacancy defects and oxygen atoms occupation effects on mechanical and electronic properties of Mo₅Si₃ silicides

Synthesis of TiB₂-Ni₃B nanocomposite coating by DC magnetron sputtering for corrosion-erosion protection