The effects of N 2 + and B+ ion implantation on the hardness behaviour and near-surface structure of SiC

1986 ◽  
Vol 21 (2) ◽  
pp. 457-468 ◽  
Author(s):  
S. G. Roberts ◽  
T. F. Page
Keyword(s):  
Ion Implantation ◽  
Surface Structure ◽  
Near Surface

Localized56Fe+ion implantation of TiO2using anodic porous alumina

2009 ◽  
Vol 1181 ◽  
Author(s):  
Jens Jensen ◽  
Ruy Sanz ◽  
Mirian Jaafar ◽  
Manuel Hernández-Vélez ◽  
Agustina Asenjo ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Ion Implantation ◽  
Surface Structure ◽  
Porous Alumina ◽  
Surface Modifications ◽  
Magnetic Signal ◽  
Near Surface ◽  
Anodic Porous Alumina ◽  
Rutile Titanium Dioxide ◽  
Local Examination

AbstractWe present result following localized ion implantation of rutile titanium dioxide (TiO2) using anodic porous alumina as a mask. The implantation were performed with 100 keV56Fe+ions using a fluence of 1.3·1016ions/cm2. The surface modifications where studied by means of SEM, AFM/MFM and XRD. A well-defined hexagonal pattern of modified material in the near surface structure is observed. Local examination of the implanted areas revealed no clear magnetic signal. However, a variation in mechanical and electrostatic behavior between implanted and non-implanted zones is inferred from the variation in AFM signals.

The Effects of Ion Implantation on the Surface Features of Inconel 600

1985 ◽  
Vol 43 ◽  
pp. 288-289
Author(s):  
John D. Rubio
Keyword(s):  
Grain Boundary ◽  
Ion Implantation ◽  
Nuclear Power ◽  
Power Plants ◽  
Surface Region ◽  
Selective Dissolution ◽  
Boundary Region ◽  
Near Surface ◽  
Inconel 600 ◽  
Steam Generator Tubing

The degradation of steam generator tubing at nuclear power plants has become an important problem for the electric utilities generating nuclear power. The material used for the tubing, Inconel 600, has been found to be succeptible to intergranular attack (IGA). IGA is the selective dissolution of material along its grain boundaries. The author believes that the sensitivity of Inconel 600 to IGA can be minimized by homogenizing the near-surface region using ion implantation. The collisions between the implanted ions and the atoms in the grain boundary region would displace the atoms and thus effectively smear the grain boundary.To determine the validity of this hypothesis, an Inconel 600 sample was implanted with 100kV N2+ ions to a dose of 1x1016 ions/cm2 and electrolytically etched in a 5% Nital solution at 5V for 20 seconds. The etched sample was then examined using a JEOL JSM25S scanning electron microscope.

Analytical Electron Microscopy of Ion-Implanted Metals

1985 ◽  
Vol 43 ◽  
pp. 282-285
Author(s):  
D.I. Potter ◽  
M. Ahmed ◽  
K. Ruffing
Keyword(s):  
Electron Microscopy ◽  
Ion Implantation ◽  
Friction And Wear ◽  
Analytical Electron Microscopy ◽  
Chemical Compositions ◽  
Surface Chemical ◽  
Near Surface ◽  
The Past ◽  
Analytical Electron ◽  
Property Changes

Ion implantation, used extensively for the past decade in fabricating semiconductor devices, now provides a unique means for altering the near-surface chemical compositions and microstructures of metals. These alterations often significantly improve physical properties that depend on the surface of the material; for example, catalysis, corrosion, oxidation, hardness, friction and wear. Frequently the mechanisms causing these beneficial alterations and property changes remain obscure and much of the current research in the area of ion implantation metallurgy is aimed at identifying such mechanisms. Investigators thus confront two immediate questions: To what extent is the chemical composition changed by implantation? What is the resulting microstructure? These two questions can be investigated very fruitfully with analytical electron microscopy (AEM), as described below.

On the efficiency of combined ion implantation for the creation of near-surface nitrogen-vacancy centers in diamond

2016 ◽  
Vol 213 (8) ◽  
pp. 2044-2050 ◽  
Author(s):  
Felipe Fávaro de Oliveira ◽  
Seyed Ali Momenzadeh ◽  
Denis Antonov ◽  
Helmut Fedder ◽  
Andrej Denisenko ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Nitrogen Vacancy ◽  
Near Surface ◽  
Nitrogen Vacancy Centers ◽  
The Creation

Joint Inversion Scheme of Dispersive Surface Waves for Near-surface Structure Estimation

2015 ◽  
Author(s):  
Tongju Gong* ◽  
Miao Liu ◽  
Yiming Wang ◽  
Zhiwei Zhu ◽  
Baoqing Zhang
Keyword(s):  
Surface Waves ◽  
Surface Structure ◽  
Joint Inversion ◽  
Near Surface ◽  
Structure Estimation

The Effect of As+ Ion Implantation and Annealing on the Electrical Properties of Near-Surface Layers in Graded-Gap n-Hg0.78Cd0.22Te Films

2021 ◽  
Vol 47 (2) ◽  
pp. 189-192
Author(s):  
A. V. Voitsekhovskii ◽  
S. N. Nesmelov ◽  
S. M. Dzyadukh ◽  
V. S. Varavin ◽  
S. A. Dvoretskii ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Ion Implantation ◽  
Surface Layers ◽  
Near Surface

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 Structural Evolution of Near-Surface Layers in NiTi Alloy Caused by an Ion Implantation

2011 ◽  
Vol 120 (1) ◽  
pp. 75-78 ◽  
Author(s):  
Z. Swiatek ◽  
M. Michalec ◽  
N. Levintant-Zayonts ◽  
J. Bonarski ◽  
A. Budziak ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Niti Alloy ◽  
Structural Evolution ◽  
Surface Layers ◽  
Near Surface
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