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@article{1093941,
author = {Amato, Filippo and Panyala, Nagender Reddy and Vašina, Petr and Souček, Pavel and Havel, Josef},
article_number = {11},
doi = {http://dx.doi.org/10.1002/rcm.6564},
keywords = {laser desorption ionisation; mass spectrometry; titanium thin films},
language = {eng},
issn = {0951-4198},
journal = {Rapid Communications in Mass Spectrometry},
title = {Laser desorption ionisation quadrupole ion trap time-of-flight mass spectrometry of titanium-carbon thin films},
volume = {27},
year = {2013}
}
TY - JOUR
ID - 1093941
AU - Amato, Filippo - Panyala, Nagender Reddy - Vašina, Petr - Souček, Pavel - Havel, Josef
PY - 2013
TI - Laser desorption ionisation quadrupole ion trap time-of-flight mass spectrometry of titanium-carbon thin films
JF - Rapid Communications in Mass Spectrometry
VL - 27
IS - 11
SP - 1196 - 1202
EP - 1196 - 1202
SN - 09514198
KW - laser desorption ionisation
KW - mass spectrometry
KW - titanium thin films
N2 - RATIONALE: Titanium-carbon (Ti-C) ceramic thin films (abbreviated as n-TiC/a-C:H) are very important for industrial applications. However, their chemical structure is still not completely resolved. The aim of this study was to determine the chemical composition of such n-TiC/a-C:H layers prepared by balanced magnetron sputtering under various experimental conditions. METHODS: Mass spectrometric analysis of Ti-C thin films was carried out via laser desorption ionisation (LDI) using a quadrupole ion trap and reflectron time-of-flight analyser. The stoichiometry of clusters formed via laser ablation was determined, and the relative abundances of species for which the isotopic patterns overlaps were estimated using a least-squares program. RESULTS: Ti-C films were found to be composites of (i) pure and hydrogenated TiC, (ii) titanium oxycarbides, and (iii) titanium oxides of various degrees of hydrogenation (all embedded in an amorphous and/or diamond-like carbon matrix). Hydrogenated titanium oxycarbide was the main component of the surface layer, whereas deeper layers were composed primarily of TiC and titanium oxides (also embedded in the carbon matrix). CONCLUSIONS: Mass spectrometry proved useful for elucidating the chemical structure of the hard ceramic-like Ti-C layers produced by magnetron sputtering. The Ti-C layers were found to be complex composites of various chemical entities. Knowledge of the resolved structure could accelerate further development of these kinds of materials.
ER -
AMATO, Filippo, Nagender Reddy PANYALA, Petr VAŠINA, Pavel SOUČEK and Josef HAVEL. Laser desorption ionisation quadrupole ion trap time-of-flight mass spectrometry of titanium-carbon thin films. \textit{Rapid Communications in Mass Spectrometry}. vol.~27, No~11, p.~1196 - 1202. ISSN~0951-4198. doi:10.1002/rcm.6564. 2013.
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