Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Gary W. Simmons"'
Publikováno v:
Engineering Fracture Mechanics. 76:715-727
This paper summarizes the results from a comprehensive multidisciplinary study to better understand the role of niobium and other strengthening elements in enhancing crack growth by oxygen in nickel-based superalloys at high temperatures, and conside
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29f38c7ce6f79b88cc0581f570ab6949
https://doi.org/10.1016/j.engfracmech.2008.09.003
https://doi.org/10.1016/j.engfracmech.2008.09.003
Publikováno v:
Scripta Materialia. 48:103-108
A surface chemistry study on P/M alloys confirmed (a) the preferential oxidation of Nb, Ti, Al and Cr on heated, polished surfaces and (b) the penetration of oxygen ahead of the crack tip during crack growth, leading to the oxidation of Nb, Ti, Al an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::951e0507038cbdd9826d2ba6165ac7e7
https://doi.org/10.1016/s1359-6462(02)00355-x
https://doi.org/10.1016/s1359-6462(02)00355-x
Publikováno v:
Scripta Materialia. 44:2405-2410
Department of Mechanical Engineering and Mechanics, Zettlemoyer Center forSurface Studies, Lehigh University, Bethlehem, PA 18015, USA(Received September 25, 2000)(Accepted in revised form January 11, 2001)Keywords: Oxygen enhanced crack growth; X-ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6dec91bf21d5cdc8c1ee66cabf4d510
https://doi.org/10.1016/s1359-6462(01)00933-2
https://doi.org/10.1016/s1359-6462(01)00933-2
Autor:
Victoria L. Dimonie, Mohamed S. El-Aasser, E. David Sudol, Robert A. Hunsicker, Gary W. Simmons, Bedri Erdem
Publikováno v:
Langmuir. 17:2664-2669
The surfaces of hydrophilic (P25) and hydrophobic (T805) TiO2 particles were characterized by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) to gain a better understanding of the adsorption mechanism of OLOA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bff14e11c64fea7b6d99f39320b33896
https://doi.org/10.1021/la0015213
https://doi.org/10.1021/la0015213
Publikováno v:
Scripta Materialia. 42:227-232
Previous studies have shown that oxygen increased the rates of crack growth in Ni base superalloys at high temperatures (> 800 K) by up to four orders of magnitude over those observed in an inert environment for alloys such as inconel 718, Rene-95 an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe7f1b4abf1f1c18f1a5bdf23f12d5f7
https://doi.org/10.1016/s1359-6462(99)00336-x
https://doi.org/10.1016/s1359-6462(99)00336-x
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 105:197-210
A method of resolving XPS spectra into surface and bulk component spectra for cases of moderate energy resolution is designed based on an analysis of a family of spectra acquired at different polar angles from flat specimens. Assumptions about line s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20f54683d473be0a296d8f6339411848
https://doi.org/10.1016/s0368-2048(99)00066-3
https://doi.org/10.1016/s0368-2048(99)00066-3
Autor:
James S. Hess, Kenneth T. Park, Richard G. Herman, Kamil Klier, Yarw-Nan Wang, Gary W. Simmons
Publikováno v:
Langmuir. 14:1384-1391
Chlorohydrocarbons chemisorb dissociatively on Pd surfaces at ≥200 K and ≥10 -8 Torr, as shown by high-resolution electron energy loss spectroscopy (HREELS) and C 1s, Cl 2p, and Pd 3d surface core level shifts (SCLS). From CH 2 Cl 2 -generated ov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7cee3baf7ff50aee2de3e9b8f11058b
https://doi.org/10.1021/la970442x
https://doi.org/10.1021/la970442x
Publikováno v:
Surface Science. 367:307-320
The combination of the surface core-level shift (SCLS) and angle-resolved X-ray photoemission spectroscopy (ARXPS) has been used to investigate the spatial extent of the oxygen-induced surface component for the Pd 3d5/2 core level from c(2 × 2)O/Pd(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61016c05a42ef9dc8fd160753406bc54
https://doi.org/10.1016/s0039-6028(96)00857-6
https://doi.org/10.1016/s0039-6028(96)00857-6
Publikováno v:
Journal of Applied Polymer Science. 58:313-322
It is generally accepted that conductometric titration is a time-dependent technique in the case of highly carboxylated latexes because of the changes in the structure of the particle surface resulting from the neutralization and the alkali swellabil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a564aa47a4d31c444901b0a3ec86b63b
https://doi.org/10.1002/app.1995.070580211
https://doi.org/10.1002/app.1995.070580211
Publikováno v:
The Journal of Physical Chemistry. 97:633-640
Phase transformations in oxygen overlayers on the Pd(100) crystal face reported earlier express themselves in a distinct and interesting kinetic behavior during oxygen desorption. The thermal desorption spectra (TDS) from the dense ([theta] = 0.8) ([
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9b6a28ca8d8d50a0f09144a27089dd4
https://doi.org/10.1021/j100105a017
https://doi.org/10.1021/j100105a017