| Records |
| Title |
Park, K. H.; Lee, S.; Koh, K. H.; Park, J. I.; Park, K. J.; Takaya, M. |
Year |
Field emission characteristics of diamond films |
Abbreviated Journal |
Journal Article |
| Issue |
1996 |
Keywords |
Han'guk Pyomyon Konghak Hoechi |
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29 |
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505-511 |
Original Title |
Field Emission |
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2029 |
| Permanent link to this record |
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Park, T. S.; Chae, K. S.; Lee, W. S.; Lee, W. H. |
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Study on amorphous Ni77.5Si7.9B14.6 alloy by FIM and atom probe |
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Journal Article |
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1987 |
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Sae Mulli |
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27 |
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atom probe field ion microscopy |
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3921 |
| Permanent link to this record |
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Park, T. S.; Sohn, K. S.; Jung, S. M.; Lee, W. S. |
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FIM and FIM-atom probe analysis of niobium-hydrogen system |
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Journal Article |
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1987 |
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Sae Mulli |
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27 |
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3994 |
| Permanent link to this record |
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Lee, D.-H.; Hong, K.T.; Nam, S.W. |
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Intergraular fracture behavior of an Al-3at.%Mg solid solution alloy under the viscous glide creep condition |
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Journal Article |
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1991 |
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Scripta Metallurgica et Materialia |
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25 |
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4 |
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823-828 |
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NU @ karnesky @ |
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10279 |
| Permanent link to this record |
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Kim, S.-H.; Lee, J.Y.; Ahn, J.-P.; Choi, P.-P. |
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Fabrication of Atom Probe Tomography Specimens from Nanoparticles Using a Fusible Bi-In-Sn Alloy as an Embedding Medium |
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Journal Article |
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2019 |
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Microscopy and Microanalysis |
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25 |
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2 |
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438-446 |
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atom probe tomography; fusible alloy; nanoparticles |
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We propose a new method for preparing atom probe tomography specimens from nanoparticles using a fusible bismuth-indium-tin alloy as an embedding medium. Iron nanoparticles synthesized by the sodium borohydride reduction method were chosen as a model system. The as-synthesized iron nanoparticles were embedded within the fusible alloy using focused ion beam milling and ion-milled to needle-shaped atom probe specimens under cryogenic conditions. An atom probe analysis revealed boron atoms in a detected iron nanoparticle, indicating that boron from the sodium borohydride reductant was incorporated into the nanoparticle during its synthesis. |
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Cambridge University Press |
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2019/02/04 |
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1431-9276 |
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NU @ karnesky @ |
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11534 |
| Permanent link to this record |
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Lee, S.-M.; Pyun, S.-I. |
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Effects of hydrogen redistribution on hydrogen-assisted cracking in Al-1.9% Li and Al-4.5% Zn-2.3% Mg alloys |
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Journal Article |
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1990 |
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Scripta Metallurgica et Materialia |
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24 |
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9 |
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1629-1634 |
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NU @ karnesky @ |
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10238 |
| Permanent link to this record |
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Lee, W.S.; Chen, T.H. |
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Effects of strain rate and temperature on dynamic mechanical behaviour and microstructural evolution in aluminium-scandium (Al-Sc) alloy |
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Journal Article |
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2008 |
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Materials Science and Technology |
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24 |
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10 |
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1271-1282 |
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AL-SC ALLOY; STRAIN RATE SENSITIVITY; ACTIVATION ENERGY; ADIABATIC SHEARING; DISLOCATION; AL3SC PRECIPITATES |
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The present study applies a compressive split Hopkinson bar to investigate the mechanical response, microstructural evolution and fracture characteristics of an aluminium-scandium (Al-Sc) alloy at temperatures ranging from − 100 to 300°C and strain rates of 1·2 × 103, 3·2×103 and 5·8 × 103 s−1. The relationship between the dynamic mechanical behaviour of the Al-Sc alloy and its microstructural characteristics is explored. The fracture features and microstructural evolution are observed using scanning and transmission electron microscopy techniques. The stress-strain relationships indicate that the flow stress, work hardening rate and strain rate sensitivity increase with increasing strain rate, but decrease with increasing temperature. Conversely, the activation volume and activation energy increase as the temperature increases or the strain rate decreases. Additionally, the fracture strain reduces with increasing strain rate and decreasing temperature. The Zerilli-Armstrong fcc constitutive model is used to describe the plastic deformation behaviour of the Al-Sc alloy, and the error between the predicted flow stress and the measured stress is found to be less than 5%. The fracture analysis results reveal that cracks initiate and propagate in the shear bands of the Al-Sc alloy specimens and are responsible for their ultimate failure. However, at room temperature, under a low strain rate of 1·2 × 103 s−1 and at a high experimental temperature of 300°C under all three tested strain rates, the specimens do not fracture, even under large strain deformations. Scanning electron microscopy observations show that the surfaces of the fractured specimens are characterised by transgranular dimpled features, which are indicative of ductile fracture. The depth and density of these dimples are significantly influenced by the strain rate and temperature. The transmission electron microscopy structural observations show the precipitation of Al3Sc particles in the matrix and at the grain boundaries. These particles suppress dislocation motion and result in a strengthening effect. The transmission electron microscopy analysis also reveals that the dislocation density increases, but the dislocation cell size decreases, with increasing strain rate for a constant level of strain. However, a higher temperature causes the dislocation density to decrease, thereby increasing the dislocation cell size. |
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NU @ m-krug @ |
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10531 |
| Permanent link to this record |
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Aleksankin, M. M.; Samchenko, I. P.; Fileleeva, L. I.; Nazarenko, V. A.; Pokrovskii, V. A.; Topchii, V. A. |
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Dissociation and rearrangements of molecular ions of sulfides, sulfoxides, and sulfones generated by a strong electric field |
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Journal Article |
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1987 |
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Teoreticheskaya I Eksperimentalnaya Khimiya |
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Teor. Eksp. Khim. |
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23 |
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no |
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3777 |
| Permanent link to this record |
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Bakhtizin, R. Z.; Valeev, V. G.; Kukharenko, Y. A. |
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Field emitted electron inelastic energy losses spectroscopy |
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Journal Article |
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1989 |
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Izv. Khim. |
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22 |
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Addendum to Atom Probe Field Ion Microscopy and Related Topics: A Bibliography for 1978-1987, 1988, and 1989 |
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4419 |
| Permanent link to this record |
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Kang, M.-J.; Pyun, J.-C.; Lee, J.-C.; Choi, Y.-J.; Park, J.-H.; Park, J.-G.; Lee, J.-G.; Choi, H.-J. |
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Nanowire-assisted laser desorption and ionization mass spectrometry for quantitative analysis of small molecules |
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Journal Article |
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2005 |
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Rapid Communications in Mass Spectrometry |
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19 |
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21 |
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3166-3170 |
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1097-0231 |
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NU @ karnesky @ Kang2005 |
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9529 |
| Permanent link to this record |
