Modification of chemical properties of materials by ion beam mixing and ion beam assisted deposition

1992 ◽  
Vol 10 (4) ◽  
pp. 1757-1764 ◽  
Author(s):  
G. K. Wolf
Keyword(s):  
Ion Beam ◽  
Chemical Properties ◽  
Ion Beam Mixing ◽  
Ion Beam Assisted Deposition ◽  
Properties Of Materials

Silicon Nitride Layers on Tool Steel Produced by Ion Beam Mixing and Ion Beam Assisted Deposition

1989 ◽  
Vol 112 (2) ◽  
pp. 533-539 ◽  
Author(s):  
E. Hensel ◽  
H. Sommer ◽  
P. Knothe ◽  
E. Richter
Keyword(s):  
Silicon Nitride ◽  
Tool Steel ◽  
Ion Beam ◽  
Ion Beam Mixing ◽  
Ion Beam Assisted Deposition ◽  
Nitride Layers

i-CxSiyOzHw Films Formed by Ion Beam Assisted Deposition

1992 ◽  
Vol 279 ◽  
Author(s):  
C. G. Fountzoulas ◽  
J. D. Demaree ◽  
W. E. Kosik ◽  
W. Franzen ◽  
W. Croft ◽  
...  
Keyword(s):  
Ion Beam ◽  
Chemical Properties ◽  
Arrival Rate ◽  
Chemical Compositions ◽  
Tunneling Microscopy ◽  
Photon Tunneling ◽  
Ion Beam Assisted Deposition ◽  
Knoop Microhardness ◽  
Steel Substrates ◽  
Adhesion Friction

ABSTRACTi-CxSiyOzHw films were formed by thermal evaporation of a tetraphenyl-tetramethyl-trisiloxane diffusion pump oil onto silicon and steel substrates with simultaneous bombardment of the growing film with 40 keV Ar+ ions to decompose the (C6H5)4(CH3)4Si3O2 molecules. Both the current density of the ion beam and the oil arrival rate were varied to produce hard, adhesive films on room temperature substrates, with densities ranging from 1.4 to 2.3 g/cm3 and Knoop microhardness values (at 15 g load) from 1000 to 2100. Unlubricated friction coefficients against a 440C steel ball with a 50 g load ranged from 0.03 to 0.40, depending on deposition conditions, and all films were more wear-resistant than the substrate materials. The films were examined with RBS, hydrogen forward recoil scattering, SEM, TEM, photon tunneling microscopy, electron diffraction, and ellipsometry to ascertain and correlate their chemical compositions and microstructures with their mechanical/chemical properties (microhardness, adhesion, friction and wear).

Ion Beam Mixing of Ni-Ti Bilayered Thin Films

1985 ◽  
Vol 43 ◽  
pp. 290-291
Author(s):  
A. K. Rai ◽  
R. S. Bhattacharya ◽  
M. H. Rashid
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
Amorphous Alloys ◽  
Ion Beam ◽  
Ion Bombardment ◽  
High Energy ◽  
Mixing Efficiency ◽  
Ion Beam Mixing ◽  
Enhanced Diffusion ◽  
Binary Metal

Ion beam mixing has recently been found to be an effective method of producing amorphous alloys in the binary metal systems where the two original constituent metals are of different crystal structure. The mechanism of ion beam mixing are not well understood yet. Several mechanisms have been proposed to account for the observed mixing phenomena. The first mechanism is enhanced diffusion due to defects created by the incoming ions. Second is the cascade mixing mechanism for which the kinematicel collisional models exist in the literature. Third mechanism is thermal spikes. In the present work we have studied the mixing efficiency and ion beam induced amorphisation of Ni-Ti system under high energy ion bombardment and the results are compared with collisional models. We have employed plan and x-sectional veiw TEM and RBS techniques in the present work.

The microstructure of a TiB2/Ti-47 Al composite material

1989 ◽  
Vol 47 ◽  
pp. 674-675
Author(s):  
O. Popoola ◽  
A.H. Heuer ◽  
P. Pirouz
Keyword(s):  
Composite Material ◽  
Ion Beam ◽  
Chemical Properties ◽  
Intermetallic Alloys ◽  
Transmission Electron ◽  
Diamond Polishing ◽  
Al Composite ◽  
The Matrix ◽  
Argon Ion ◽  
And Chemical Properties

The addition of fibres or particles (TiB2, SiC etc.) into TiAl intermetallic alloys could increase their toughness without compromising their good high temperature mechanical and chemical properties. This paper briefly discribes the microstructure developed by a TiAl/TiB2 composite material fabricated with the XD™ process and forged at 960°C.The specimens for transmission electron microscopy (TEM) were prepared in the usual way (i.e. diamond polishing and argon ion beam thinning) and examined on a JEOL 4000EX for microstucture and on a Philips 400T equipped with a SiLi detector for microanalyses.The matrix was predominantly γ (TiAl with L10 structure) and α2(TisAl with DO 19 structure) phases with various morphologies shown in figure 1.

Energy dependence of ion beam mixing at Fe-Al and Fe-Cu interface: A conversion electron Mössbauer spectroscopic study

1988 ◽  
Vol 106 (4) ◽  
pp. 297-309 ◽  
Author(s):  
D. M. Phase ◽  
Jayashree Patankar ◽  
V. N. Kulkarni ◽  
S. B. Ogale
Keyword(s):  
Spectroscopic Study ◽  
Energy Dependence ◽  
Conversion Electron ◽  
Ion Beam ◽  
Ion Beam Mixing

Plasmonic properties of titanium nitride thin films prepared by ion beam assisted deposition

2016 ◽  
Vol 185 ◽  
pp. 295-298 ◽  
Author(s):  
Lin-Ao Zhang ◽  
Hao-Nan Liu ◽  
Xiao-Xia Suo ◽  
Shuo Tong ◽  
Ying-Lan Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Titanium Nitride ◽  
Ion Beam ◽  
Ion Beam Assisted Deposition

scholarly journals Formation of the titanium-aluminum intermetallic compounds by ion-beam mixing

2020 ◽  
Vol 1713 ◽  
pp. 012012
Author(s):  
P V Bykov ◽  
V L Vorob’ev ◽  
I N Klimova ◽  
A A Kolotov ◽  
A Yu Drozdov ◽  
...  
Keyword(s):  
Intermetallic Compounds ◽  
Ion Beam ◽  
Ion Beam Mixing ◽  
Titanium Aluminum
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