The Factors Affecting the Surface Properties of W-Implanted H13 Steel

2014 ◽  
Vol 662 ◽  
pp. 75-78
Author(s):  
Jian Hua Yang ◽  
Song Li ◽  
Xing Jian Ma
Keyword(s):  
Ion Implantation ◽  
Surface Properties ◽  
H13 Steel ◽  
Factors Affecting ◽  
Enhanced Diffusion ◽  
Radiation Enhanced Diffusion ◽  
Concentration Depth Profile ◽  
Collision Approximation ◽  
Concentration Depth Profiles ◽  
Main Factor

The surface properties of W-implanted H13 steel are investigated using pulse multi-charged ion implantation. Computer simulations based on the binary collision approximation, TRIDYN, have been applied to calculate the concentration depth profiles of implanted tungsten ions in H13 steel. The calculated result by TRIDYN program is compared with that from experimental results. The factors affecting the surface properties of W-implanted H13 steel have been discussed. The radiation enhanced diffusion induced by spike is the main factor affecting the concentration depth profile. Compared with single energy ion implantation, the multi-charged ion implantation will make the concentration gradient become small, which is conducive to the formation of a kind of relatively uniform surface structure, and further improve the wear resistance of H13 steel.

Applied-Information Technology in Concentration Depth Profile of Multi-Charged Mo Ion Implantation

2014 ◽  
Vol 662 ◽  
pp. 115-118
Author(s):  
Jian Hua Yang ◽  
Xing Jian Ma
Keyword(s):  
Monte Carlo ◽  
Ion Implantation ◽  
Depth Profile ◽  
High Dose ◽  
H13 Steel ◽  
Depth Profiles ◽  
Concentration Depth Profile ◽  
Charged Ions ◽  
Concentration Depth Profiles ◽  
Better Than

Monte Carlo computer simulations based on the binary collision approximation, TRIDYN program, have been applied to calculate the concentration depth profiles of implanted multi-charged molybdenum ions in H13 steel. The sputtering effect of a high dose ion implantation and influence of multi-charged ions on the concentration depth profile of implanted molybdenum ions can both be considered in the TRIDYN simulation. For the Monte Carlo computer simulation, the chosen pseudo-projectiles are 500000. The chosen extraction voltages are 48kV and 25kV, respectively, and an implantation doses of 5×1017cm-2 to compare the results which have been published related to molybdenum ion implantation. TRIDYN program is better than SRIM program in the calculation of the concentration depth profiles of implanted multi-charged ions. And the calculation result of the TRIDYN program is different from the experiment result. The other factors of affecting the concentration depth profile have also been discussed finally.

A study on the Surface Properties of Nitrogen Implanted H13 Steel by Plasma Immersion Ion Implantation

2006 ◽  
Vol 118 ◽  
pp. 275-280
Author(s):  
Y.Z. You ◽  
D.I. Kim ◽  
H.G. Chun
Keyword(s):  
Surface Roughness ◽  
Ion Implantation ◽  
Surface Properties ◽  
Photoelectron Spectroscopy ◽  
Surface Hardness ◽  
Wear Loss ◽  
Wear Property ◽  
H13 Steel ◽  
Near Surface ◽  
Plasma Immersion Ion Implantation

The near surface of the H13 steel was implanted by using Plasma immersion ion implantation (PIII) system at constant bias voltage of −20 kV with varying nitrogen (N+ ) ion dose (3, 6, 9, 12, 15×1017 ions/cm2 ). The surface properties of the N+ ion implanted steel were investigated by measuring the microhardness, wear loss and friction coefficient. As increasing N+ ion dose (12×1017 ions/cm2), both wear property and surface hardness were increased. However, these properties were decreased as the incident ion dose increased over 12×1017 ions/cm2. The elemental depth profile and surface roughness were obtained with X-ray photoelectron spectroscopy (XPS) and surface roughness tester, respectively.

Ion beam mixing, diffusion, and phase stability in Cu/Al2O3 interfaces

1996 ◽  
Vol 11 (5) ◽  
pp. 1277-1283 ◽  
Author(s):  
K. Neubeck ◽  
H. Hahn ◽  
A. G. Balogh ◽  
H. Baumann ◽  
K. Bethge ◽  
...  
Keyword(s):  
Phase Stability ◽  
Room Temperature ◽  
Ion Beam ◽  
Ion Beam Mixing ◽  
Enhanced Diffusion ◽  
Radiation Enhanced Diffusion ◽  
Temperature Diffusion ◽  
Sputtering Yields ◽  
Concentration Depth Profiles ◽  
Diffusion Properties

Ion beam mixing, diffusion properties, and phase stability have been investigated in Cu/Al2O3 bilayer samples. Specimens were prepared by vapor deposition and irradiated with 150 keV Ar+ ions up to a fluence of 1.5 · 1017 Ar+/cm2. Sample temperature under irradiation was varied between 77 K and 673 K. The mixing behavior was studied by analyzing the concentration depth profiles, determined by Rutherford Backscattering Spectroscopy. It was found that mixing efficiencies of Cu, Al, and O scale with Ar+ fluence. Radiation enhanced diffusion (RED), observed above room temperature, is separated from ballistic mixing and high temperature diffusion. The migration enthalpy for interdiffusion in the RED region (between RT and 300 °C) was estimated to be approximately 0.3 eV. Sputtering yields depending on temperature gradient near to sample and phase stability versus ion dose and temperature are also discussed.

scholarly journals Influence of the irradiation temperature on the intracascade ion mixing

1993 ◽  
Vol 8 (3) ◽  
pp. 449-454 ◽  
Author(s):  
M. Alurralde ◽  
A. Caro ◽  
M. Victoria
Keyword(s):  
Energy Deposition ◽  
Liquid Drop ◽  
Irradiation Temperature ◽  
Binary Collision ◽  
Liquid Drop Model ◽  
Good Qualitative Agreement ◽  
Enhanced Diffusion ◽  
Radiation Enhanced Diffusion ◽  
Mixing Rates ◽  
Collision Approximation

We present a description of the thermal behavior of cascades in Cu and Ag over a large energy range and irradiation temperatures. For this purpose the binary collision approximation, which gives the profile of the energy deposition, is coupled to a simplified version of the heat equation. In the present calculations, the original liquid drop model [M. Alurralde, A. Caro, and M. Victoria, J. Nucl. Mater. 183, 33 (1991)] has been extended to the case where the lattice is at finite temperatures. The resulting evolution of the liquid cascade is analyzed for PKA energies up to 1 MeV, and the results are compared to experimental observations of mixing rates. We obtain a temperature dependence that adds to the traditional Radiation Enhanced Diffusion, RED, in very good qualitative agreement with experiments on materials showing thermal spikes.

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