The Experts below are selected from a list of 33 Experts worldwide ranked by ideXlab platform
Kai Sun - One of the best experts on this subject based on the ideXlab platform.
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structure of deuteride of a Null Matrix ti mo alloy studied by complementation of neutron and x ray powder diffraction
Journal of Alloys and Compounds, 2006Co-Authors: Xianxia Yuan, Suping Liu, Liping Guo, Kai SunAbstract:The detailed structural information of the deuteride of a Null Matrix Ti-Mo alloy containing 33 at.% of Mo is studied by complementation of the neutron and X-ray powder diffraction techniques. The deuteride containing similar to 1.8 deuterium atoms per alloy atom forms a titanium 8-hydride type of structure with deuterium atoms in the tetrahedral interstitial sites. The line broadening analysis of the deuteride phase suggests that the deuterization of the alloy causes strong lattice deformation effects, and the micro-strain is likely to be dislocation induced. In comparison with the deformation of the host Ti-Mo alloy Matrix lattice, a relaxation effect is observed for the deformation of the interstitial deuterium sublattice. (c) 2006 Elsevier B.V. All rights reserved.
Xianxia Yuan - One of the best experts on this subject based on the ideXlab platform.
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structure of deuteride of a Null Matrix ti mo alloy studied by complementation of neutron and x ray powder diffraction
Journal of Alloys and Compounds, 2006Co-Authors: Xianxia Yuan, Suping Liu, Liping Guo, Kai SunAbstract:The detailed structural information of the deuteride of a Null Matrix Ti-Mo alloy containing 33 at.% of Mo is studied by complementation of the neutron and X-ray powder diffraction techniques. The deuteride containing similar to 1.8 deuterium atoms per alloy atom forms a titanium 8-hydride type of structure with deuterium atoms in the tetrahedral interstitial sites. The line broadening analysis of the deuteride phase suggests that the deuterization of the alloy causes strong lattice deformation effects, and the micro-strain is likely to be dislocation induced. In comparison with the deformation of the host Ti-Mo alloy Matrix lattice, a relaxation effect is observed for the deformation of the interstitial deuterium sublattice. (c) 2006 Elsevier B.V. All rights reserved.
Suping Liu - One of the best experts on this subject based on the ideXlab platform.
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structure of deuteride of a Null Matrix ti mo alloy studied by complementation of neutron and x ray powder diffraction
Journal of Alloys and Compounds, 2006Co-Authors: Xianxia Yuan, Suping Liu, Liping Guo, Kai SunAbstract:The detailed structural information of the deuteride of a Null Matrix Ti-Mo alloy containing 33 at.% of Mo is studied by complementation of the neutron and X-ray powder diffraction techniques. The deuteride containing similar to 1.8 deuterium atoms per alloy atom forms a titanium 8-hydride type of structure with deuterium atoms in the tetrahedral interstitial sites. The line broadening analysis of the deuteride phase suggests that the deuterization of the alloy causes strong lattice deformation effects, and the micro-strain is likely to be dislocation induced. In comparison with the deformation of the host Ti-Mo alloy Matrix lattice, a relaxation effect is observed for the deformation of the interstitial deuterium sublattice. (c) 2006 Elsevier B.V. All rights reserved.
Liping Guo - One of the best experts on this subject based on the ideXlab platform.
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structure of deuteride of a Null Matrix ti mo alloy studied by complementation of neutron and x ray powder diffraction
Journal of Alloys and Compounds, 2006Co-Authors: Xianxia Yuan, Suping Liu, Liping Guo, Kai SunAbstract:The detailed structural information of the deuteride of a Null Matrix Ti-Mo alloy containing 33 at.% of Mo is studied by complementation of the neutron and X-ray powder diffraction techniques. The deuteride containing similar to 1.8 deuterium atoms per alloy atom forms a titanium 8-hydride type of structure with deuterium atoms in the tetrahedral interstitial sites. The line broadening analysis of the deuteride phase suggests that the deuterization of the alloy causes strong lattice deformation effects, and the micro-strain is likely to be dislocation induced. In comparison with the deformation of the host Ti-Mo alloy Matrix lattice, a relaxation effect is observed for the deformation of the interstitial deuterium sublattice. (c) 2006 Elsevier B.V. All rights reserved.
J G Gasser - One of the best experts on this subject based on the ideXlab platform.
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determination of chemical order of manganese germanium liquid alloy by the Null Matrix method
Journal of Non-crystalline Solids, 2002Co-Authors: B Grosdidier, M Nigon, Jacky Auchet, J G GasserAbstract:Abstract The Bhatia–Thornton concentration–concentration partial structure factor, SCC(q), is a strong indicator of the order in liquid alloys. Manganese is one of the four metals, which has a negative neutron scattering length, while the one for germanium is positive. Thus for a defined composition (Mn69Ge31) the linear combination of the two neutron scattering lengths weighted by the atomic compositions is zero (zero alloy). We present here the results of neutron diffraction studies on the Mn69Ge31 at 980 °C ‘Null Matrix alloy’. The measured total structure factor is proportional to the Bhatia–Thornton SCC(q) (‘Null Matrix method’). The main peak of the experimental SCC(q) is a proof of a strong chemical order in this alloy. This order also appears in real space determined by the Fourier transform of the structure factor. From the experimental Bhatia–Thornton concentration–concentration partial structure factor SCC(q), we have extracted the ordering potential in the alloy, which is the difference of the effective potential between atoms of the same species and the effective potential of atoms of different species. The ordering potential indicates clearly that the alloy is heterocoordinated. Simple effective potential models like the hard sphere one, cannot be used to interpret the structure.
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chemical order of manganese antimony liquid alloys obtained experimentally by the neutron Null Matrix method
Physics and Chemistry of Liquids, 2002Co-Authors: B Grosdidier, J L Bos, J G Gasser, R BellissentAbstract:The Bhatia-Thornton concentration-concentration partial structure factor S CC ( q ) is a strong indicator of the order in liquid alloys. Manganese is one of the four metals, which has a negative neutronic scattering length, while the antimony one is positive. Thus for a defined composition (Mn 60 Sb 40 ) the linear combination of the two neutronic scattering lengths weighted by the atomic compositions is zero (zero alloy). We present here the results of neutron diffraction on the Mn 60 Sb 40 "Null Matrix" alloy at 950°C, which is proportional to the Bhatia-Thornton S CC ( q ) ("Null Matrix" method). The total structure factor of Mn 40 Sb 60 at 800°C has also been measured. The main peak of the experimental S CC ( q ) is a proof of a strong chemical order in this alloy. This order is confirmed in the real space by the Fourier transform of the structure factor. To interpret our experimental results, one generally uses effective potentials determined with the pseudopotential formalism. But transition metal p...
