Synthesis and Characterization of Tungsten (W) Nano Particles
Crystallite size and lattice strains in tungsten (W) powders produced by milling have been analyzed by X-ray powder diffraction. The lattice strain (ε) and Debye-Waller factor (B) are determined from the half-widths and integrated intensities of the Bragg reflections. In W the Debye-Waller factor...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Eastern Macedonia and Thrace Institute of Technology
2014-04-01
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| Series: | Journal of Engineering Science and Technology Review |
| Subjects: | |
| Online Access: | http://www.jestr.org/downloads/Volume7Issue1/fulltext77114.pdf |
| Summary: | Crystallite size and lattice strains in tungsten (W) powders produced by milling have been analyzed by X-ray powder
diffraction. The lattice strain (ε) and Debye-Waller factor (B) are determined from the half-widths and integrated
intensities of the Bragg reflections. In W the Debye-Waller factor is found to increase with the lattice strain. From the
correlation between the strain and effective Debye-Waller factor, the Debye-Waller factors for zero strain have been
estimated for W. In the present work, Hall-Williamson method for particle size/crystallite size estimation of high energy
milled W nano powder. The variation of energy of vacancy formation as a function of lattice strain has been studied. |
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| ISSN: | 1791-2377 1791-2377 |