𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Influence of Al2O3 nanoparticles on solubility extension of Cr in Cu by mechanical alloying

✍ Scribed by S. Sheibani; S. Heshmati-Manesh; A. Ataie

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
851 KB
Volume
58
Category
Article
ISSN
1359-6454

No coin nor oath required. For personal study only.

✦ Synopsis

In this study, the effect of the presence of Al 2 O 3 nanoparticles during mechanical alloying on the extension of Cr solid solubility in Cu was investigated. The lattice parameter, dislocation density and crystallite size were evaluated by the X-ray diffraction technique. Also, the microstructure was characterized by scanning electron microscopy and transmission electron microscopy. The final product was a nanocrystalline and supersaturated Cu-Cr solid solution with a mean crystallite size ranging from 8 to 19 nm depending on the composition. The Gibbs free energy changes in these systems due to the dislocation density and crystallite size variations during milling were calculated. It was found that the presence of Al 2 O 3 nanoparticles was beneficial to the process, and this was particularly related to its significant contribution to the increase of strain part of Gibbs free energy changes.

πŸ“œ SIMILAR VOLUMES

Study on the solid solubility extension
Study on the solid solubility extension of Mo in Cu by mechanical alloying Cu with amorphous Cr(Mo)
✍ Shengqi Xi; Kesheng Zuo; Xiaogang Li; Guang Ran; Jingen Zhou πŸ“‚ Article πŸ“… 2008 πŸ› Elsevier Science 🌐 English βš– 734 KB

This paper presents the extension of the solid solubility of Mo in Cu by a mechanical alloying technique. Two binary systems, Cu-10 wt.% Mo and Cr-50 wt.% Mo, and one ternary system, Cu-20 wt.% Cr(Mo), are investigated. The solid solubility of Mo in Cu has been shown to be less than 4.3 at.% when th

The influence of the Cr–Al foil texture
The influence of the Cr–Al foil texture on morphology of adhesive Al2O3 layers in monolithic environmental catalysts
✍ A. BiaΕ‚as; W. Osuch; W. Łasocha; M. Najbar πŸ“‚ Article πŸ“… 2008 πŸ› Elsevier Science 🌐 English βš– 412 KB

The FeCrAl-alloy foils of 0.1 and 0.05 mm thickness, being the supports of metallic monolithic environmental catalysts, were investigated by XRD and TEM to determine the reasons of the differences in morphology of the alumina adhesive layers grown during oxidation. Alumina adhesive layers of stable

In situ and postradiation analysis of me
In situ and postradiation analysis of mechanical stress in Al2O3:Cr induced by swift heavy-ion irradiation
✍ V.A. Skuratov; G. Bujnarowski; Yu.S. Kovalev; J. O’Connell; K. Havanscak πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 752 KB

Optical spectroscopy and TEM techniques have been applied to study the radiation damage and correlated mechanical stresses in Al 2 O 3 and Al 2 O 3 :Cr single crystals induced by (1-3) MeV/amu Kr, Xe and Bi ion irradiation. Mechanical stresses were evaluated in situ using a piezospectroscopic effect

Fabrication and evolution of Cu nanopart
Fabrication and evolution of Cu nanoparticles in Al2O3 crystal by ion implantation and annealing at different atmospheres
✍ Yanyan Shen; Lili Zhang; Zhaodong Li; Xiaodong Zhang; Dacheng Zhang; Xu Li; Zhuo πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 653 KB

Metallic nanoparticles (NPs) embedded in dielectrics display unique structures and new interesting properties, such as peculiar optical properties , size-dependent electronic and magnetic properties , and so on. Owing to their distinct properties, materials composed of discrete metallic NPs have a w