| 1. |
|
|
| 2. |
- Ehlerding, A., et al.
(författare)
-
The dissociative recombination of fluorocarbon ions III : CF2+ and CF3
- 2006
-
Ingår i: Journal of Physics B. - : IOP Publishing. - 0953-4075 .- 1361-6455. ; 39:4, s. 805-812
-
Tidskriftsartikel (refereegranskat)abstract
- Cross sections and branching ratios are presented for the dissociative recombination of the CF2+ and C-3(+) ions with electrons. It is found that the channel producing CF + F is dominant for the reaction with CF2+ and the production of CF2 + F is dominant for the reaction with CF3+. The cross sections for these two ions are very similar.
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
- Novotny, O, et al.
(författare)
-
The dissociative recombination of fluorocarbon ions : II. CF
- 2005
-
Ingår i: Journal of Physics B. - : IOP Publishing. - 0953-4075 .- 1361-6455. ; 38:10, s. 1471-1482
-
Tidskriftsartikel (refereegranskat)abstract
- The dissociative recombination and excitation of CF+ have been measured at the ASTRID and CRYRING storage rings. Though examination of the available potential energy curves would suggest that the recombination rate would be large for this ion, in fact a rate constant of 5.2 +/- 1.0 x 10(-8) (T-e/300)(-0.8) cm(3) s(-1) was found. The recombination cross section at low energies falls off to a minimum at 0.5 eV centre-of-mass collision energy but exhibits resonances at energies above this. The dissociative excitation cross section leading to C+ + F was also measured and this displays an onset beginning at about 7 eV.
|
|
| 6. |
- Shokeir, Mohamed, et al.
(författare)
-
Influence of Graphene, SiCnp, and G/SiCnp Hybrid Fillers on the Strengthening Mechanisms of Al-Matrix
- 2020
-
Ingår i: Metallurgical and Materials Transactions. A. - : SPRINGER. - 1073-5623 .- 1543-1940. ; 51:6, s. 3280-3298
-
Tidskriftsartikel (refereegranskat)abstract
- AA2124 reinforced with graphene (G), silicon carbide nanoparticles (SiCnp), and graphene-coated SiCnp (GCSiC(np)) were fabricated and characterized. GCSiC(np) reinforcement was fabricated by ball milling, followed by mixing and milling the reinforcements with AA2124 powders. Consolidation was achieved by cold compaction and hot extrusion (HE). The powders morphology and structural evolution were characterized with XRD and SEM. Microhardness and tensile properties were also characterized. Increasing the fillers content beyond 5 wt pct deteriorated the composites mechanical properties due to the agglomeration of the fillers. Adding 5 wt pct GCSiC(np) increased the hardness, specific strength, and modulus of the composite and decreased ductility. Furthermore, 5 wt pct SiCnp induced severe lattice strain by intra-granular dispersion strengthening. The GCSiC(np) filler strengthened the Al-matrix via the strong interfacial bonding of the intercalated inter-granular lamination of the hybrid particles within the Al-matrix and the intra-granular dispersion strengthening associated with the individual SiCnp. Adding 5 wt pct G lowered the HE composites density and hardness significantly, while the sliding of G-intercalated layers coating the Al-grains facilitated plastic flow along the extrusion direction and enhanced the strength and ductility of the composite compared to that containing 5 wt pct GCSiC(np).
|
|
