... 17K. Miyoshi, JJ Pouch and SA Alterovitz, Mat. Sc. Forum, Trans. Tech. Publ. ... 68/69 (1994)... more ... 17K. Miyoshi, JJ Pouch and SA Alterovitz, Mat. Sc. Forum, Trans. Tech. Publ. ... 68/69 (1994), p. 626. Abstract | PDF (813 K) | View Record in Scopus | Cited By in Scopus (86). 23D. Paulmier, H. Zaïdi, T. Le Huu, H. Nery and AM Durand, Diamond Films and Tech. 4 (2) (1994). 24Y. ...
Mechanically Stimulated Gas Emission (MSGE) spectroscopy was used for investigation into triboche... more Mechanically Stimulated Gas Emission (MSGE) spectroscopy was used for investigation into tribochemical reactions and gas emission for four types of amorphous hydrogenated carbon (a-C:H) coatings, which were obtained by either ion beam deposition (IBD) or plasma enhanced chemical vapour deposition (PECVD). The results of statistical analysis, which was employed to identify the components of the emitted gases from the mass-spectrometry data, argue against the hypothesis that considerable amount of CH3 could be present in the emitted gases. For the IBD coatings the main components of the emitted gases were methane and/or argon, whereas for the PECVD coatings they were mainly methane and hydrogen. Noticeable emission of ethane, propane, carbon mono- and dioxides was also detected under sliding of PECVD coatings deposited with the lowest ion energy. While frictional heating has been definitely ruled out as the driving mechanism for MSGE, there are experimental evidences that MSGE has to be associated with structural degradation of the coating.
The nature and properties of polyphosphate glasses formed in the antiwear action of zinc dithioph... more The nature and properties of polyphosphate glasses formed in the antiwear action of zinc dithiophosphate (Zndtp) is investigated. Special attention is paid to the advantage of coupling three surface analytical techniques on the same Zndtp tribofilm: Auger (AES), ...
The authors demonstrate that energetic argon ions introduce phase transformation of a diamond- li... more The authors demonstrate that energetic argon ions introduce phase transformation of a diamond- like carbon film. Inside an ultrahigh vacuum chamber, energetic Ar ions of 5 keV were generated using an x-ray photon spectroscopy. After ion bombardment, x-ray photon spectroscopy (XPS) and friction tests were conducted in situ. The ex situ surface morphological analysis using an atomic force microscope and
Experimental characterization of grain and grain boundaries of chromia scales upon addition of La... more Experimental characterization of grain and grain boundaries of chromia scales upon addition of La has been carried out with a variety of techniques. The effect of lanthanum addition on the high temperature oxidation is explained based on simulations suggested by the experimental results. The grain boundary precipitation mechanism of perovskite phases suggested by our simulations is through the extraction of
... 17K. Miyoshi, JJ Pouch and SA Alterovitz, Mat. Sc. Forum, Trans. Tech. Publ. ... 68/69 (1994)... more ... 17K. Miyoshi, JJ Pouch and SA Alterovitz, Mat. Sc. Forum, Trans. Tech. Publ. ... 68/69 (1994), p. 626. Abstract | PDF (813 K) | View Record in Scopus | Cited By in Scopus (86). 23D. Paulmier, H. Zaïdi, T. Le Huu, H. Nery and AM Durand, Diamond Films and Tech. 4 (2) (1994). 24Y. ...
Mechanically Stimulated Gas Emission (MSGE) spectroscopy was used for investigation into triboche... more Mechanically Stimulated Gas Emission (MSGE) spectroscopy was used for investigation into tribochemical reactions and gas emission for four types of amorphous hydrogenated carbon (a-C:H) coatings, which were obtained by either ion beam deposition (IBD) or plasma enhanced chemical vapour deposition (PECVD). The results of statistical analysis, which was employed to identify the components of the emitted gases from the mass-spectrometry data, argue against the hypothesis that considerable amount of CH3 could be present in the emitted gases. For the IBD coatings the main components of the emitted gases were methane and/or argon, whereas for the PECVD coatings they were mainly methane and hydrogen. Noticeable emission of ethane, propane, carbon mono- and dioxides was also detected under sliding of PECVD coatings deposited with the lowest ion energy. While frictional heating has been definitely ruled out as the driving mechanism for MSGE, there are experimental evidences that MSGE has to be associated with structural degradation of the coating.
The nature and properties of polyphosphate glasses formed in the antiwear action of zinc dithioph... more The nature and properties of polyphosphate glasses formed in the antiwear action of zinc dithiophosphate (Zndtp) is investigated. Special attention is paid to the advantage of coupling three surface analytical techniques on the same Zndtp tribofilm: Auger (AES), ...
The authors demonstrate that energetic argon ions introduce phase transformation of a diamond- li... more The authors demonstrate that energetic argon ions introduce phase transformation of a diamond- like carbon film. Inside an ultrahigh vacuum chamber, energetic Ar ions of 5 keV were generated using an x-ray photon spectroscopy. After ion bombardment, x-ray photon spectroscopy (XPS) and friction tests were conducted in situ. The ex situ surface morphological analysis using an atomic force microscope and
Experimental characterization of grain and grain boundaries of chromia scales upon addition of La... more Experimental characterization of grain and grain boundaries of chromia scales upon addition of La has been carried out with a variety of techniques. The effect of lanthanum addition on the high temperature oxidation is explained based on simulations suggested by the experimental results. The grain boundary precipitation mechanism of perovskite phases suggested by our simulations is through the extraction of
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