scholarly journals Hydrogen Interaction with Deep Surface Modified Zr-1Nb Alloy by High Intensity Ti Ion Implantation

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1081 ◽  
Author(s):  
Egor Kashkarov ◽  
Alexander Ryabchikov ◽  
Alexander Kurochkin ◽  
Maxim Syrtanov ◽  
Alexey Shevelev ◽  
...  
Keyword(s):  
Ion Implantation ◽  
High Intensity ◽  
Zirconium Alloy ◽  
Hydrogen Permeation ◽  
Lamellar Microstructure ◽  
Elemental Distribution ◽  
Deep Surface ◽  
Hydrogen Interaction ◽  
Modified Layer ◽  
Surface Modified

A deep surface modified TiZr layer was fabricated by high-intensity low-energy titanium ion implantation into zirconium alloy Zr-1Nb. Gas-phase hydrogenation was performed to evaluate protective properties of the modified layer against hydrogen permeation into Zr-1Nb alloy. The effects of ion implantation and hydrogen on microstructure, phase composition and elemental distribution of TiZr layer were analyzed by scanning electron microscopy, X-ray diffraction, and glow-discharge optical emission spectroscopy, respectively. It was revealed that TiZr layer (~10 μm thickness) is represented by α′ + α(TiZr) lamellar microstructure with gradient distribution of Ti through the layer depth. It was shown that the formation of TiZr layer provides significant reduction of hydrogen uptake by zirconium alloy at 400 and 500 °C. Hydrogenation of the modified layer leads to refinement of lamellar plates and formation of more homogenous microstructure. Hydrogen desorption from Ti-implanted Zr-1Nb alloy was analyzed by thermal desorption spectroscopy. Hydrogen interaction with the surface modified TiZr layer, as well as its resistance properties, are discussed.

High-intensity low energy titanium ion implantation into zirconium alloy

2018 ◽  
Vol 439 ◽  
pp. 106-112 ◽  
Author(s):  
A.I. Ryabchikov ◽  
E.B. Kashkarov ◽  
N.S. Pushilina ◽  
M.S. Syrtanov ◽  
A.E. Shevelev ◽  
...  
Keyword(s):  
Ion Implantation ◽  
High Intensity ◽  
Zirconium Alloy ◽  
Low Energy

Soft polyurethanes treated by plasma immersion ion implantation: Structural and mechanical properties of the surface-modified layer

2017 ◽  
Vol 135 (11) ◽  
pp. 45983 ◽  
Author(s):  
Ilya A. Morozov ◽  
Alexander S. Mamaev ◽  
Irina V. Osorgina ◽  
Anton Y. Beliaev ◽  
Roman I. Izumov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ion Implantation ◽  
Modified Layer ◽  
Plasma Immersion Ion Implantation ◽  
Surface Modified

Special Aspects of High-Intensity Low-Energy Ion Implantation

2021 ◽  
Author(s):  
A. I. Ryabchikov ◽  
A. I. Ivanova ◽  
O. S. Korneva ◽  
D. O. Sivin
Keyword(s):  
Ion Implantation ◽  
High Intensity ◽  
Low Energy

Corrosion Behaviours of Mo Modified Ti6Al4V Alloy in Hank’s Solution

2009 ◽  
Vol 610-613 ◽  
pp. 1150-1154
Author(s):  
Ai Lan Fan ◽  
Cheng Gang Zhi ◽  
Lin Hai Tian ◽  
Lin Qin ◽  
Bin Tang
Keyword(s):  
Electrochemical Corrosion ◽  
Optical Emission ◽  
Ti6al4v Alloy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diffusion Layers ◽  
Modified Layer ◽  
Surface Modified ◽  
Hank’S Solution ◽  
And Diffusion

The Mo surface modified layer on Ti6Al4V alloy was obtained by the plasma surface alloying technique. The structure and composition of the Mo modified Ti6Al4V alloy was investigated by X-ray diffraction (XRD) and glow discharge optical emission spectroscopy (GDOES). The Mo modified layer contains Mo coating on subsurface and diffusion layers between the subsurface and substrate. The X- ray diffraction analysis of the Mo modified Ti6Al4V alloy reveals that the outmost surface of the Mo modified Ti6Al4V alloy is composed of pure Mo. The electrochemical corrosion performance of the Mo modified Ti6Al4V alloy in 25°C Hank’s solution was investigated and compared with that of Ti6Al4V alloy. Results indicate that the self-corroding electric potential and the corrosion-rate of the Mo modified Ti6Al4V alloy are higher than that of Ti6Al4V alloy in 25°C Hank’s solution.

Optical properties of surface modified polypropylene by plasma immersion ion implantation technique

2010 ◽  
Vol 97 (8) ◽  
pp. 081908 ◽  
Author(s):  
Sk. Faruque Ahmed ◽  
Myoung-Woon Moon ◽  
Chansoo Kim ◽  
Yong-Jun Jang ◽  
Seonghee Han ◽  
...  
Keyword(s):  
Optical Properties ◽  
Ion Implantation ◽  
Implantation Technique ◽  
Plasma Immersion Ion Implantation ◽  
Surface Modified

scholarly journals A Study on the Wettability of Ion-Implanted Stainless and Bearing Steels

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 208 ◽  
Author(s):  
Xinchun Chen ◽  
Xuan Yin ◽  
Jie Jin
Keyword(s):  
Stainless Steel ◽  
Ion Implantation ◽  
Ion Beam ◽  
Bearing Steel ◽  
Contact Angles ◽  
Electrochemical Technique ◽  
Near Surface ◽  
Thermodynamic Stabilization ◽  
Deposition Processes ◽  
Surface Modified

To satisfy the harsh service demand of stainless steel and aviation bearing steel, the anticorrosion and wettability behaviors of 9Cr18 stainless steel and M50 bearing steel tailored by ion beam surface modification technology were experimentally investigated. By controlling the ion implantation (F+, N+, N+ + Ti+) or deposition processes, different surface-modified layers and ceramic layers or composite layers with both effects (ion implantation and deposition processes) were obtained on metal surfaces. The wettability was characterized by a contact angle instrument, and the thermodynamics stabilization of ion implantation-treated metals in corrosive solution was evaluated through an electrochemical technique. X-ray photoelectron spectroscopy (XPS) was employed for detecting the chemical bonding states of the implanted elements. The results indicated that ion implantation or deposition-induced surface-modified layers or coating layers could increase water contact angles, namely improving hydrophobicity as well as thermodynamic stabilization in corrosive medium. Meanwhile, wettability with lubricant oil was almost not changed. The implanted elements could induce the formation of new phases in the near-surface region of metals, and the wettability behaviors were closely related to the as-formed ceramic components and amorphous sublayer.

scholarly journals The Effect of High-Intensity Electron Beam on the Crystal Structure, Phase Composition, and Properties of Al–Si Alloys with Different Silicon Content

2021 ◽  
Vol 22 (1) ◽  
pp. 129-157
Author(s):  
D. V. Zaguliaev ◽  
S. V. Konovalov ◽  
Yu. F. Ivanov ◽  
V. E. Gromov ◽  
V. V. Shlyarov ◽  
...  
Keyword(s):  
Solid Solution ◽  
Electron Beam ◽  
Phase Composition ◽  
Crystal Lattice ◽  
High Intensity ◽  
Materials Science ◽  
Lattice Parameter ◽  
Crystal Lattice Parameter ◽  
Material Surface ◽  
Modified Layer

The study deals with the element–phase composition, microstructure evolution, crystal-lattice parameter, and microdistortions as well as the size of the coherent scattering region in the Al–10.65Si–2.11Cu and Al–5.39Si–1.33Cu alloys irradiated with the high-intensity electron beam. As revealed by the methods of x-ray phase analysis, the principal phases in untreated alloys are the aluminium-based solid solution, silicon, intermetallics, and Fe2Al9Si2 phase. In addition, the Cu9Al4 phase is detected in Al–10.65Si–2.11Cu alloy. Processing alloys with the pulsed electron beam induces the transformation of lattice parameters of Al–10.65Si–2.11Cu (aluminium-based solid solution) and Al–5.39Si–1.33Cu (Al1 and Al2 phases). The reason for the crystal-lattice parameter change in the Al–10.65Si–2.11Cu and Al–5.39Si–1.33Cu alloys is suggested to be the changing concentration of alloying elements in the solid solution of these phases. As established, if a density of electron beam is of 30 and 50 J/cm2, the silicon and intermetallic compounds dissolve in the modified layer. The state-of-the-art methods of the physical materials science made possible to establish the formation of a layer with a nanocrystalline structure of the cell-type crystallization because of the material surface irradiation. The thickness of a modified layer depends on the parameters of the electron-beam treatment and reaches maximum of 90 µm at the energy density of 50 J/cm2. According to the transmission (TEM) and scanning (SEM) electron microscopy data, the silicon particles occupy the cell boundaries. Such changes in the structural and phase states of the materials response on their mechanical characteristics. To characterize the surface properties, the microhardness, wear parameter, and friction coefficient values are determined directly on the irradiated surface for all modification variants. As shown, the irradiation of the material surface with an intensive electron beam increases wear resistance and microhardness of the Al–10.65Si–2.11Cu and Al–5.39Si–1.33Cu alloys.

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