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Hydrogen absorption behaviour in nanometer sized palladium samples stabilised in soft and hard matrix
- Source :
- Journal of Alloys and Compounds. :523-528
- Publication Year :
- 2005
- Publisher :
- Elsevier BV, 2005.
-
Abstract
- The reduction in the length scale of materials to the nanometer range brings about fundamental changes that lead to novel and unusual phenomena, very different from their coarse-grained counterparts. These differences are not only due to the different physical properties of the small-size system but it is also affected by the type of the stabiliser used on these materials. In situ X-ray diffraction (XRD) investigations of the hydrogen absorption behaviour in different nanometer sized palladium samples were performed during loading and unloading. Pressure-lattice parameter isotherms were constructed for three different samples: surfactant stabilised clusters, and two types of polymer stabilised samples (clusters and closed clusters layers sample). The pressure-lattice parameter isotherms for the samples show a narrowed lattice parameter miscibility gap . The closed clusters layers sample shows the smallest lattice parameter expansion values. The effect of the samples morphology on the lattice expansion will be discussed. It will be shown that not only the sample sizes affect the expansion but also the cluster surrounding plays an important rule.
- Subjects :
- Length scale
Nanocomposite
Materials science
Spinodal decomposition
Mechanical Engineering
Metals and Alloys
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Crystallography
Lattice constant
chemistry
Mechanics of Materials
Chemical physics
Materials Chemistry
Cluster (physics)
Nanometre
Absorption (chemistry)
0210 nano-technology
Palladium
Subjects
Details
- ISSN :
- 09258388
- Database :
- OpenAIRE
- Journal :
- Journal of Alloys and Compounds
- Accession number :
- edsair.doi...........0800d67996f75629425993a7a0344c08