Study of nanocrystalline gamma-Al2O3 produced by high-pressure compaction

Article Abstract:

Samples of gamma-Al2O3 were produced by compaction at 4.5 GPa in a toroidal-type device at room temperature and at higher temperatures using a high-pressure method. Compaction at room temperature provided crack-free, translucent and dense samples. These characteristics were enhanced for samples compacted at higher temperatures up to 565 degrees C. Findings support the hypothesis that the compaction at high-pressure caused the production of a strong structure, with closed pores containing trapped water and hydroxylated internal structures.

Research, Analysis, Compacting, Aluminum oxide

---

Cyclic cluster approach to three-dimensional solids: quasi-relativistic INDO treatment

Article Abstract:

Issues discussing the testing of a cluster crystal orbital method for calculating the electron structure of solids in a quasi-relativistic INDO treatment for semimetals, semiconductors, superconductors, metals and insulators are presented.

Testing, Chemistry, Physical and theoretical, Physical chemistry, Electrical conductivity, Cyclic compounds, Electrons, Hamiltonian systems

---

Similar abstracts:

• Abstracts: Theoretical studies on nanocrystalline diamond: nucleation by dicarbon and electronic structure of planar defects
• Abstracts: Theoretical studies on nanocrystalline diamond: nucleation by dicarbon and electronic structure of planar defects. part 2
• Abstracts: Preparation of carbon-coated cobalt nanocrystals in a new gas blow arc reactor and their characterization. Recombination reactions of oxygen atoms on an anodized aluminum plasma reactor wall, studied by a spinning wall method
• Abstracts: Highly ordered self-assembly with large area of Fe(sub 3)O(sub 4) nanoparticles and the magnetic properties. Phenomenological predictions of cohesive energy and structural transition of nanoparticles
• Abstracts: Refinement of a structural model of a pigment-protein complex by accurate optical line shape theory and experiments

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.