INVESTIGADORES
GOYANES Silvia Nair
artículos
Título:
High energy ion beam irradiation on titanium substrate in a pulsed plasma device operating with methane
Autor/es:
H. BHUYAN; M. FAVRE; E. VALDERRAMA; A. HENRIQUEZ; G. VOGEL; H. CHUAQUI; E. WYNDHAM; A. CABRERA; E. RAMOS-MOORE; P. A. NUÑEZ; H. KELLY; D. GRONDONA; S. GOYANES
Revista:
JOURNAL OF PHYSICS - D (APPLIED PHYSICS)
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2009 vol. 42 p. 205207 - 205215
ISSN:
0022-3727
Resumen:
We report the investigation of high energy ion beam irradiation on titanium (Ti) substrates at
room temperature using a low energy plasma focus (PF) device operating in methane gas. The
surface modifications induced by the ion beam using two different anode materials, graphite
and copper, are characterized using standard surface science diagnostic tools, such as x-ray
diffraction, scanning electron microscopy, energy-dispersive x-ray analysis, Raman
spectroscopy and Auger electron spectroscopy. It has been found that the interaction of the
pulsed PF ion beams, with characteristic energy in the 15300 keV range, with the Ti surface,
results in the formation of nanocomposite carbon structures. It is observed that the resulting
ion irradiated surface morphologies are different, depending on the different anode materials,
under otherwise identical operational conditions. In the case of the graphite anode the
interaction of PF ion beams followed by the anode vapour with the Ti surface results in the
formation of gradient layers of TiC with embedded carbon nanostructures.