Nanostructural evolution of steel and titanium alloys exposed to glow-discharge plasma

Tereshko, I.; Abidzina, V.; Tereshko, A.M.; Elkin, Igor

doi:10.1016/j.nimb.2007.04.021

Cited by 10 publications

(6 citation statements)

References 3 publications

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“…These methods have different characteristics and are applied in different fields. Glow discharge plasma deposition can get a clean surface, and the thickness of the oxide film obtained is 2 nm to 150 nm [2][3][4][5][6][7][8]. The oxide film obtained from oxygen ion implantation is thicker, about several microns [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Oxidation Mechanism of Biomedical Titanium Alloy Surface and Experiment

Zhang

Sun

et al. 2020

International Journal of Corrosion

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The biological activity, biocompatibility, and corrosion resistance of implants depend primarily on titanium dioxide (TiO2) film on biomedical titanium alloy (Ti6Al4V). This research is aimed at getting an ideal temperature range for forming a dense titanium dioxide (TiO2) film during titanium alloy cutting. This article is based on Gibbs free energy, entropy changes, and oxygen partial pressure equations to perform thermodynamic calculations on the oxidation reaction of titanium alloys, studies the oxidation reaction history of titanium alloys, and analyzes the formation conditions of titanium dioxide. The heat oxidation experiment was carried out. The chemical composition was analyzed with an energy dispersive spectrometer (EDS). The results revealed that titanium dioxide (TiO2) is the main reaction product on the surface below 900°C. Excellent porous oxidation films can be obtained between 670°C and 750°C, which is helpful to improve the bioactivity and osseointegration of implants.

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Section: Introductionmentioning

confidence: 99%

Oxidation Mechanism of Biomedical Titanium Alloy Surface and Experiment

Zhang

Sun

et al. 2020

International Journal of Corrosion

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“…Another interesting method enabling the elimination of internal stresses is a process involving the use of the glow discharge low-energy plasma beam. Previous tests revealed that interaction between charged particles of the plasma beam and the radiated surface of a crystalline material rearranges the crystal lattice of a material subjected to treatment [6]. The bombarding of the solid surface with the low-energy ion beam excites the oscillation of the atoms of the crystal lattice and makes it move deep inside the material [7].…”

Section: Introductionmentioning

confidence: 99%

The Preliminary Analysis of the Effect of Low-Energy Plasma Treatment on Internal Stresses in a Welded Plate of Steel S355

Nowak¹,

Chruścielski²,

Ambroziak³

et al. 2020

eBIS

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The articles presents a pilot study aimed to provide preliminary assessment concerning the effect of the low-energy plasma treatment on the level of internal stresses in welded plates. In addition, the article discusses the similarity of a stress relief mechanism based on annealing and that based on low-energy plasma treatment. The extensormetric measurements of internal stresses involving steel S355 after welding and after treatment in the plasma chamber revealed the low-energy plasma treatment-induced reduction of internal stresses.

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“…For a long period only high energies were assumed to cause any significant modifications. However, low-energy ion bombardments (up to 5 keV) of metal and alloy samples were shown to be very efficient too: the increase of dislocation density (up to 10 mm in depth from the irradiated surface) was detected [3][4][5][6][7]. In fact, a bulk long-range modification of materials in the glow discharge plasma (GDP) took place.…”

Section: Introductionmentioning

confidence: 99%

“…The above results were obtained by the use of transmission electron microscopy for well annealed samples with initially small dislocation density (armco-Fe, Ni3Fe, etc.) [4,6]. For materials with initially increased dislocation density (unannealed copper, M2 high-speed steel, titanium alloys) reorganization of dislocation structure is the most considerable: either intensive formation of the dislocation fragments or grinding of the fragments with corresponding increase in their disorientation is observed.…”

Section: Introductionmentioning

confidence: 99%

“…Modelling shows the formation of new collective atom states. The observed phenomena include the redistribution of energy, clusterization, structure formation when the atoms stabilizes in new non-equilibrium positions, localized structures, auto-oscillations, and travelling waves and pulses [3][4][5][6][7]. The next step was to look at the influence of low-energy GDP on liquids.…”

Section: Introductionmentioning

confidence: 99%

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Biomedical Applications of Materials Processed in Glow Discharge Plasma

Tereshko¹,

Gorchakov²,

Tereshko³

et al. 2013

Advances in Biomaterials Science and Biomedical Applications

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was taken for investigation. Water molecules are able to create molecular associates using Van der Waals forces as well as labile hydrogen interactions [ -]. Owing to hydrogen bonds molecules of water are capable to form not only random associates one having no ordered structure but clusters, i.e. associates having some ordered structure [ -]. The network of hydrogen bonds and the high order of intermolecular cooperativity facilitate long-range propagation of molecular excitations [ , ]. This allows, in principle, to consider water and water-based solutions as systems sensitive to weak external forces. Indeed, the study of luminescence at long time scale shows that the structural equilibrium in water is not stable it changes after dissolution of small portions of added substances and after exposition of aqueous samples to UV and mild X-ray irradiation [ ].

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Nanostructural evolution of steel and titanium alloys exposed to glow-discharge plasma

Cited by 10 publications

References 3 publications

Oxidation Mechanism of Biomedical Titanium Alloy Surface and Experiment

Oxidation Mechanism of Biomedical Titanium Alloy Surface and Experiment

The Preliminary Analysis of the Effect of Low-Energy Plasma Treatment on Internal Stresses in a Welded Plate of Steel S355

Biomedical Applications of Materials Processed in Glow Discharge Plasma

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