Zobrazeno 1 - 10
of 747
pro vyhledávání: '"G. De Stasio"'
Publikováno v:
Tribology Letters. 18:453-462
Antiwear films formed from zinc dialkyl-dithiophosphate, in base oil, are known to create inhomogeneous agglomeration of patches on metallic surfaces up to 400 nm thick. It has been found that these patches (termed antiwear pads) are also non-conduct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5d9e88484fbb0216dbe0a07824810ef
https://doi.org/10.1007/s11249-004-3597-y
https://doi.org/10.1007/s11249-004-3597-y
Autor:
G. M. Bancroft, Peter R. Norton, Mark A. Nicholls, Masoud Kasrai, G. De Stasio, Lisa M. Wiese
Publikováno v:
Tribology Letters. 18:261-278
Understanding the lubrication of aluminum–silicon (Al–Si) alloys (>18 Si) under conditions similar to those in the cylinder/bore system is vital to determining their applicability to current engine designs. A novel investigation of the location o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9fabb860c1ba468f9ecf519e0ce8d8b
https://doi.org/10.1007/s11249-004-2752-9
https://doi.org/10.1007/s11249-004-2752-9
Publikováno v:
Tribology Letters. 17:811-822
X-ray absorption near-edge structure (XANES) spectroscopy at macro-scale (mm 2 ) and X-ray photoelectron emissions microscopy (X-PEEM) at micro-scale (lm 2 ) have been used to investigate the chemistry and spatial distributions of chemical species in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caf1505870261475d519efff0b90c448
https://doi.org/10.1007/s11249-004-8089-6
https://doi.org/10.1007/s11249-004-8089-6
Autor:
Mark A. Nicholls, Than Do, Masoud Kasrai, G. M. Bancroft, B. H. Frazer, G. De Stasio, Peter R. Norton
Publikováno v:
Tribology Letters. 17:205-216
We report the first nanometer scale chemical and mechanical (chemomechanical) characterization of selected features of a tribologically derived zinc dialkyl-dithiophosphate (ZDDP) antiwear film. AFM permits identification of the features responsible
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb3afafc4b0ab9814920096c4e0f2f48
https://doi.org/10.1023/b:tril.0000032447.32442.6a
https://doi.org/10.1023/b:tril.0000032447.32442.6a
Publikováno v:
American Mineralogist. 88:763-769
We present X-ray absorption near-edge structure (XANES) spectroscopy of 11 silicate and aluminosilicate minerals and two glasses at the SiK and SiL2,3, and OK edges. The similar nearestneighbor environments lead to similar spectral lineshapes at each
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e18737263c59e0bc029f1b34c8d177fa
https://doi.org/10.2138/am-2003-5-605
https://doi.org/10.2138/am-2003-5-605
Autor:
Kenneth H. Nealson, Jonathan Lang, Daniel Haskel, G. De Stasio, P. G. Conrad, A. Belz, Benjamin Gilbert, George Srajer, B. H. Frazer
Publikováno v:
The Journal of Physical Chemistry A. 107:2839-2847
We present near edge X-ray absorption spectra of manganese oxides at the Mn L2,3, Mn K, and O K edges to investigate the relative sensitivity of the edges to bonding and structure. Collectively, the spectra probe local electronic structure and interm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a200fd6b363e1622262764708b687e93
https://doi.org/10.1021/jp021493s
https://doi.org/10.1021/jp021493s
Autor:
Jack F. Fowler, C. Salt, Benjamin Gilbert, B.R. Sonderegger, G. De Stasio, Lisa M. Wiese, Katherine L. Richter, D. Rajesh, Minesh P. Mehta, B. H. Frazer, S.P. Howard
Publikováno v:
Journal de Physique IV (Proceedings). 104:349-352
We present chemical mapping of all physiologically relevant elements at the subcellular level, as well as the trace element Gd. A broad energy range (60-1200 eV) is fundamental to investigate all the elements in the same microscopic locations. Concen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c57421174e26acc366ce838c02a69e53
https://doi.org/10.1051/jp4:200300097
https://doi.org/10.1051/jp4:200300097
Autor:
G. M. Bancroft, Masoud Kasrai, E. S. Yamaguchi, G. De Stasio, Benjamin Gilbert, P.R. Ryason, Karine Masenelli-Varlot
Publikováno v:
Tribology Letters. 14:157-166
The partial replacement of ZDDP by dispersed potassium triborate in engine oil was studied. X-ray Absorption Spectroscopy at the phosphorus, sulphur and boron edges was used to identify the chemical species in tribochemical films on the macro-scale.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23225022b714633db16f1e07841eaad6
https://doi.org/10.1023/a:1022379329476
https://doi.org/10.1023/a:1022379329476
Autor:
Giorgio Margaritondo, Benjamin Gilbert, G. De Stasio, S. Douglas, Kenneth H. Nealson, Gertrude F. Rempfer, Ray F. Egerton
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. :1005-1011
Specimen charging under X-ray illumination is a well known phenomenon that can seriously obstruct the analysis of insulating samples. Synchrotron X-PEEM spectromicroscopy can reach a lateral resolution of 20 nm, 1-2 orders of magnitude larger than el
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be1195f81d4ad0d55cb08ca7edf828e3
https://doi.org/10.1016/s0368-2048(00)00342-x
https://doi.org/10.1016/s0368-2048(00)00342-x
Autor:
G. Canning, G. De Stasio, Benjamin Gilbert, Masoud Kasrai, M.L. Suominen Fuller, G. M. Bancroft, J. N. Cutler
Publikováno v:
Tribology Letters. 6:159-169
Antiwear films formed from pure neutral alkyl‐ and aryl‐ZDDP's, and a commercial ZDDP, have been studied with high resolution synchrotron‐based photoemission spectromicroscopy with a new instrument, MEPHISTO. Good P L‐edge XANES spectra have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48684eb2c53061633f8ebd01759f173f
https://doi.org/10.1023/a:1019176110473
https://doi.org/10.1023/a:1019176110473