Pascal Bellon | Materials Science & Engineering | Illinois
My research program is mainly focused on alloys or mixtures submitted to a sustained external forcing: such conditions are often met during either the processing of materials (e.g. by ball-milling or during thin film growth) or during the use of these materials (e.g. …
Electron microscopy nanoscale characterization of ball …
Microstructures and phases stabilized at steady state by variable temperature ball milling of Cu50Ag50 powders are characterized using transmission and scanning transmission electron …
Structural and Chemical Characterization of Cu …
Drawing on Barry's chemical geography, which gathers various concerns related to the study of chemicals in the field, and Bachelard's meta-chemical proposal, which challenges a substantialist understanding of chemicals, we propose an …
Weak CO binding sites induced by Cu–Ag interfaces …
This is also supported by the measured K D of 0.054 ± 0.002 s −1 for the 4-h-milled Cu(OD) 0.8 Ag 0.2 (Supplementary Fig. 20), indicating its weak CO adsorption sites are more than those of Cu ...
Selected Area Electron Diffraction, a technique for …
Zghal et al. reported deformation texture in Cu-Ag ball milled powders by analyzing the SAED pattern of powders [16, 17]. Boulay et.al used SAED pattern of TiO 2, and Mn 3 O 4 nanocrystal aggregates and platinum films and carried out Rietveld refinement using MAUD (Material Analysis Using Diffraction) in which textural refinement was ...
TEM analysis of Cu 50 Ag 50 powders milled at 315K: (a) …
Download scientific diagram | TEM analysis of Cu 50 Ag 50 powders milled at 315K: (a) bright field image, (b) dark field image, and (c) selected area diffraction pattern; (d) is an STEM-DF image ...
(PDF) Structural and Chemical Nanoscale Electron …
We present a study of nanostructured Cu–Ag material obtained by low temperature ball milling.
Nanocomposites stabilized by elevated-temperature ball milling …
Ag 50 Cu 50 alloys were prepared by high-energy ball milling at 393, 423, and 453 K. Atom probe tomography was used to characterize the microstructure and the local composition of the milled powders. The dynamical competition between the atomic mixing forced by milling and the phase separation promoted by thermodynamic driving forces results in the self …
Pascal Bellon | Materials Research Laboratory | Illinois
My research program is mainly focused on alloys or mixtures submitted to a sustained external forcing: such conditions are often met during either the processing of materials (e.g. by ball-milling or during thin film growth) or during the use of these materials (e.g. …
Forced mixing and nanoscale decomposition in ball-milled Cu-Ag …
Ag 50 Cu 50 alloys are prepared by high energy ball milling at different controlled temperatures, 85 K, 315 K and 453 K, with milling times long enough to reach steady-state. Atom probe field ion microscopy (APFIM) is used to characterize the atomic mixing forced by low temperature milling and to study the nanocomposite materials stabilized by elevated temperature milling.
Electron microscopy nanoscale characterization of ball milled Cu-Ag …
DOI: 10.1016/S1359-6454(02)00286-0 Corpus ID: 137316406; Electron microscopy nanoscale characterization of ball milled Cu-Ag powders. Part II: Nanocomposites synthesized by elevated temperature milling or annealing
Structure and phase separation of Ag–Cu alloy thin films
The observation of thermal decomposition at the low temperature of 373–473 K (100–200 °C) is consistent with the results of Klassen et al. [13] obtained for ball-milled Ag 50 Cu 50 alloy, in which they found that ball milling at 473 K led to fully decomposed Ag and Cu alloys. In the work of Klassen et al., decomposition of Ag–Cu films at ...
s zghal ball milling cu ag
A TEM and STEM investigation of Cu-Ag nanomaterials synthesized by temperature controlled high-energy ball-milling more by Slim Zghal It is well documented that low-temperature ball-milling can force immiscible elements, e.g., Cu and Ag, into solid solution.
Chemical mixing and self-organization of Nb precipitates in Cu …
We can understand this observation by noting that the specimens were prepared by first ball-milling the Cu, Ag and Nb powders for over ∼8 ... S. Zghal, P. Bhattacharya, R. Twesten, F. Wu, P. Bellon. Mater Sci Forum, 386–388 (2002), p. 165. View in Scopus [13] G. Martin. Phys Rev B, 30 (1984), p. 1424. View in Scopus
Electron microscopy nanoscale characterization of ball-milled Cu–Ag …
Semantic Scholar extracted view of "Electron microscopy nanoscale characterization of ball-milled Cu–Ag powders. Part I: Solid solution synthesized by cryo-milling" by S. Zghal et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 220,291,910 papers from all fields of science ...
Electron microscopy nanoscale characterization of ball-milled Cu–Ag
It has been reported that mechanical milling of an Ag-Cu system produces a complete solid solution for the entire composition [11][12][13] [14] [15]; hence, Ag-Cu particles were mechanically ...
Sliding wear-induced chemical nanolayering in Cu–Ag, …
Commercially pure copper and silver powders were combined to obtain an average molar composition of 90% Cu and 10% Ag and then subjected to high-energy ball milling using a SPEX 8000 mill in an argon glove box for 12 h at ambient temperature (∼50 °C).Ball milling forces the mixing of Cu and Ag into a solid solution [23].The ball-milled powders were then …
Forced mixing and nanoscale decomposition in ball-milled Cu–Ag …
The Cu–Ag system has been selected because its thermodynamic properties are well known [23], and because it displays a very rich and intriguing behavior during ball milling [13], [14], and under irradiation [24].In particular, Klassen and coworkers [14] have studied in detail the influence of the milling temperature on the final state of the powders, while keeping the milling …
Effect of surface modification of Cu with Ag by ball-milling …
After a certain mill time, thin flake WS-SA@Ag–Cu (Ag–Cu encapsulated by WS and SA) is obtained, and due to the encapsulation of oil layer on the surface of Ag–Cu, the WS-SA@Ag–Cu is hydrophobic, indicating that ball-milling with WS and SA can obtain hydrophobic Ag–Cu and improve its compatibility with organic phase [17]. Furthermore ...
Publications – Bellon-Group
Zghal, R. Twesten, F. Wu, P. Bellon, "Electron microscopy nanoscale characterization of ball-milled Cu-Ag powders. ... "Forced mixing and nanoscale decomposition in ball-milled Cu-Ag characterized by APFIM," Acta Materialia, Vol 49, pp. 453 (2001). ... Application to Ball Milling," P. Bellon and R. S. Averback, Physical Review Letters ...
Enhanced Metastable Solubility by Ball Milling of Rapidly Solidified Cu
The Cu-Co-Mn system's free energy of solid solubility varies for grain sizes of (b) 20 nm, (c) 10 nm and (d) 4 nm, as shown in Figure 1parison of the results of Mn addition in ternary Cu-Co-Mn system vis-a-vis binary Cu-Co system (Figure 1a) obtained by thermodynamic calculation reveals that the addition of Mn has significantly reduced the free energy over the …
Electron microscopy nanoscale characterization of ball-milled Cu-Ag …
We present a study of nanostructured Cu-Ag material obtained by low temperature ball milling. The microstructural characterization is carried out using a wide variety of transmission electron microscopy (TEM) techniques from conventional dark-field imaging, selected area diffraction and energy dispersive X-ray spectrometry (EDS) to more modern techniques of scanning TEM …
Electron microscopy nanoscale characterization of ball-milled Cu–Ag
Electron microscopy nanoscale characterization of ball-milled Cu–Ag powders. Part I: Solid solution synthesized by cryo-milling ... Part I: Solid solution synthesized by cryo-milling. Slim Zghal. 2002, Acta Materialia.
Fang WU | Professor | Sichuan University, Chengdu
Structural and Chemical Nanoscale Electron Microscopy Characterization of Ag-Cu Ball Milled Powders - Volume 9 Issue S02 - P. Bellon, S. Zghal, M. J. Hÿtch, J. -P. Chevalier, R. Twesten, F. Wu View
Electron microscopy nanoscale characterization of ball …
Microstructures and phases stabilized at steady state by variable temperature ball milling of Cu50Ag50 powders are ... 4712 S. Zghal et al. / Acta Materialia 50 (2002) 4711–4726
Electron microscopy nanoscale characterization of ball …
Semantic Scholar extracted view of "Electron microscopy nanoscale characterization of ball-milled Cu–Ag powders. Part I: Solid solution synthesized by cryo-milling" by S. Zghal et al.
Electron microscopy nanoscale characterization of ball milled …
In the present paper, we use transmission electron microscopy (TEM), and scanning TEM (STEM) to characterize the microstructure and the phases in presence in Cu 50 …
High-strength and high-conductive Cu/Ag multilayer produced …
By combining the two most conductive metals, Ag and Cu, a composite with extremely high electrical conductivity and high strength was produced be accumulative roll bonding method for the first time. UFG microstructures were observed in the Cu–Ag samples after five ARB cycles. The continuity of the constituent Cu and Ag layers was maintained up to the …
Electron microscopy nanoscale characterization of ball milled Cu-Ag
Electron microscopy nanoscale characterization of ball milled Cu-Ag powders. Part II: Nanocomposites synthesized by elevated temperature milling or annealing (PDF) Electron microscopy nanoscale characterization of ball milled Cu-Ag powders.
Structural and Chemical Characterization of Cu-Ag and …
Proceedings of the 2018 IEEE 8th International Conference on Nanomaterials: Applications and Properties, NAP 2018, 2018. This study intends to present a review of the different types of ceramic-polymeric nanocomposites.