Substrate effect on structural modification of C60 induced by 110 MeV Ni ion

Bajwa, Navdeep; Ingale, Alka; Avasthi, D.K.; Kumar, Ravi; Dharamvir, Keya; Jindal, V. K.

doi:10.1016/s0168-583x(03)01737-3

Cited by 11 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10 Several studies have been performed by our as well as other groups on modification of structural, electrical, optical and surface properties of fullerene C 60 by SHI irradiation. 11-22 A complete study on fullerene C 60 has been reported by Bajwa et al . 18 She has demonstrated a curve between electron energy loss and damage cross-section for various types of ions and energy.…”

Section: Introductionmentioning

confidence: 99%

Surface and structural studies of fullerene C₇₀under ion irradiation

Sharma

Singhal

Vishnoi

et al. 2016

Surface Engineering

View full text Add to dashboard Cite

Thin films of C 70 were grown on double side polished silicon substrate by resistive heating of C 70 powder. These films were irradiated with 90 MeV Si 7+ ions at different fluences in the range from 1 × 10 12 to 6 × 10 13 ions cm −2 . The investigations on structural and surface modifications were made (after irradiation) by Raman spectroscopy and atomic force microscopy (AFM), respectively. Raman spectroscopic studies reveal that C 70 is not completely transformed into amorphous carbon at a fluence of 6 × 10 13 ions cm −2 . Swift heavy ion irradiation generates nanometre size conducting tracks in fullerenes. For 90 MeV Si ions irradiated C 70 fullerene, the damage crosssection (σ) and radius of damaged cylindrical zone were estimated from Raman spectra, to be ∼0.32 × 10 −13 cm 2 and ∼1.01 nm, respectively, using vibrational modes of C 70 . From AFM study it is clear that the film irradiated at a fluence of 3 × 10 12 ions cm −2 shows maximum roughness. Contact angle measurements have been performed to know about hydrophilic or hydrophobic nature of fullerene C 70 thin films.

show abstract

Section: Introductionmentioning

confidence: 99%

Surface and structural studies of fullerene C₇₀under ion irradiation

Sharma

Singhal

Vishnoi

et al. 2016

Surface Engineering

View full text Add to dashboard Cite

show abstract

“…However, despite the prospects for using thin-film coatings as anti-corrosion protective materials, a number of problems remain, the solution of which will increase the service life of materials, as well as enhance their resistance to mechanical damage and high-temperature heating. One way to solve this problem is to use the methods of ion or radiation modification using low-energy ions or electron radiation [14][15][16]. This modification is based on the hypothesis that, during the interaction of incident charged particles (ions) with the crystal structure of thin films, energy transfer processes, accompanied by energy transformation of kinetic energy into thermal energy, lead to structural changes in film coatings and their hardening.…”

Section: Introductionmentioning

confidence: 99%

Development of a method for directed modification of thin-film nitride coatings to enhance resistance to corrosion processes of steels and alloys

Kadyrzhanov,

Kozlovskiy,

Borgekov

et al. 2023

EJSU

View full text Add to dashboard Cite

In recent years, much attention has been paid to research in the field of increasing resistance to external influences, including the corrosion resistance of steels and alloys exposed to aggressive environments or high temperatures. Interest in this area is due to the need to increase the service life of steel products, which will reduce the cost of most technological processes. The most promising methods for improving the strength characteristics, as well as resistance to corrosion degradation, are the application of various protective coatings to steel, among the variety of which one can single out nitride coatings that are highly resistant to corrosion and degradation caused by exposure to aggressive media. Also, one of the ways to increase resistance to external influences is the methods of changing the dislocation density in the near-surface layer, which make it possible to create a barrier layer for the penetration of oxygen and moisture through the protective coating. Based on the proposed corrosion protection methods, this paper considers the possibilities of combining the methods of applying nitride coatings and subsequent ionic modification in order to create a barrier protective layer against corrosion of 316L stainless steel. During the studies conducted, it was found that the magnetron deposition of a nitride coating (TiN) on the surface of stainlesssteel leads to a hardness growth by 10-13 %, and the subsequent ion modification, performed by the action of low-energy N2+ ions on the nitride coating with different irradiation fluence, leads to an increase in strength by 50-70 % compared to the initial value. As a result of corrosion tests to maintain the stability of strength properties, it was found that the most effective influence of ion irradiation is a fluence of 5×1013-1014 ion/cm 2 , leading not only to maximum hardening, but also to an increase in the corrosion potential, the alteration of which indicates a decrease in the degradation rate.

show abstract