Relevant bibliographies by topics / Vacancy segregation

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Vacancy segregation'

Author: Grafiati
Published: 6 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Vacancy segregation.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Vacancy segregation"

1

Shen, Kun, Yixuan Wang, Jun Zhang, Yi Zong, Gengwei Li, Changchun Zhao, and Hao Chen. "Revealing the effect of grain boundary segregation on Li ion transport in polycrystalline anti-perovskite Li3ClO: a phase field study." Physical Chemistry Chemical Physics 22, no. 5 (2020): 3030–36. http://dx.doi.org/10.1039/c9cp06055c.

Full text
Abstract:
Phase field calculated effective diffusivity Deff of Li vacancy in anti-perovskite Li3OCl is shown as a function of average grain sizes. Li vacancy segregation reinforces the negative contribution of grain boundaries on the overall Li diffusion.
APA, Harvard, Vancouver, ISO, and other styles
2

Wang, Xiao Wei, Hong Yan Zhang, and Ai Qing Sun. "Influence of Vacancy Formation and Mg Migration on Cracking in Spot Welding AA5754 Alloys." Materials Science Forum 539-543 (March 2007): 433–37. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.433.

Full text
Abstract:
Al alloys with Mg as the major alloying element constitute a group of non-heat treatable alloys with medium strength, high ductility, excellent corrosion resistance and weldability. However, the segregation of Mg may adversely affect the performance of these materials if they are exposed to rapid heating and cooling environments such as resistance spot welding. The formation and migration of vacancy is an important factor affecting Mg segregation. In this paper, the amount and distribution of Mg were measured by electron probe microanalysis and the vacancy formation energy in AA5754 alloys was measured by positron annihilation lifetime spectroscopy. The results indicated that the segregation of Mg at cracks, occurring under suitable temperature and stress conditions, is related to the formation and migration of vacancies, and may promote crack initiation and propagation.
APA, Harvard, Vancouver, ISO, and other styles
3

Cho, Eunae, Bora Lee, Choong-Ki Lee, Seungwu Han, Sang Ho Jeon, Bae Ho Park, and Yong-Sung Kim. "Segregation of oxygen vacancy at metal-HfO2 interfaces." Applied Physics Letters 92, no. 23 (June 9, 2008): 233118. http://dx.doi.org/10.1063/1.2943322.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Melikhova, Oksana, Jakub Čížek, Ivan Procházka, Tetyana E. Konstantinova, and Igor A. Yashchishyn. "Inhibition of Positronium Formation in Yttria Stabilized Zirconia Nanopowders Modified by Addition of Chromia." Materials Science Forum 733 (November 2012): 249–53. http://dx.doi.org/10.4028/www.scientific.net/msf.733.249.

Full text
Abstract:
The effect of chromia additive on defects in yttria stabilized zirconia (YSZ) nanopowders was investigated in this work. It was found that positrons are trapped at vacancy-like misfit defect at grain boundaries and at larger defects situated at triple points. Moreover, a long-lived ortho-positronium contribution was found in YSZ nanopowder without chromia. Addition of chromia prolongs the lifetime of positrons trapped at vacancy-like misfit defects which indicates segregation of Cr ions at grain interfaces and interaction of Cr with vacancy-like misfit defets. Moreover addition of chromia completely suppresses formation of positronium.
APA, Harvard, Vancouver, ISO, and other styles
5

Ismunandar, Brendan J. Kennedy, and Brett A. Hunter. "Surface Segregation and Oxygen Vacancy Ordering in Defect Pyrochlores." Journal of Solid State Chemistry 130, no. 1 (April 1997): 81–89. http://dx.doi.org/10.1006/jssc.1997.7271.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Shitara, K., A. Kuwabara, C. A. J. Fisher, T. Ogawa, T. Asano, Y. Kaneko, A. Omote, and H. Moriwake. "Effect of oxygen vacancy segregation in Au or Pt/oxide hetero-interfaces on electronic structures." RSC Advances 7, no. 57 (2017): 36034–37. http://dx.doi.org/10.1039/c7ra04804a.

Full text
Abstract:
We investigated the effects of oxygen vacancy segregation on electronic structures in the vicinity of hetero-interfaces between noble metals (Au and Pt) and yttria stabilized zirconia by performing first-principles calculations and Bader analysis.
APA, Harvard, Vancouver, ISO, and other styles
7

Skelton, R., C. Nowak, X. W. Zhou, and R. A. Karnesky. "Tritium segregation to vacancy-type basal dislocation loops in α-Zr from molecular dynamics simulations." Journal of Applied Physics 131, no. 12 (March 28, 2022): 125103. http://dx.doi.org/10.1063/5.0078048.

Full text
Abstract:
Tritium interactions with irradiation-induced defects in α-Zr are important for understanding getter performance in tritium-producing burnable absorbed rods. Vacancy-type basal loops are prominent in α-Zr irradiated at high dose rates. As they generate substantial tensile strain fields, such loops can trap tritium atoms. For this reason, vacancy-type basal dislocation loops are potentially important for tritium transport, tritium solubility, and tritide precipitation. We perform molecular dynamics simulations of tritium distributions around vacancy-type basal dislocation loops of different sizes, across a temperature range of 700–1200 K. Tritium preferentially segregates to the dislocation core and, to a lesser extent, the stacking fault. Segregation energies are estimated by inverting the tritium concentration distributions by assuming that the Boltzmann distribution adequately describes partitioning between the bulk and core environments. Agreement between molecular dynamics calculated segregation energies and predictions from elasticity theory using the stress field obtained by spatially averaging the atomic virial stresses suggests that elastic interactions dominate the interaction between tritium and basal loops. We also find an attractive tritium–tritium interaction. This attractive interaction can increase the stability of tritium in the dislocation core, resulting in a higher relative tritium concentration as the overall tritium concentration of the system increases. This suggests that vacancy-type basal dislocation loops can increase tritium solubility in irradiated α-Zr and may serve as preferential sites for tritide precipitation.
APA, Harvard, Vancouver, ISO, and other styles
8

Qiao, Ying Jie, Hong Bo Fu, and Chun Kai Li. "Study on the Diffusion Coefficient in NGS under Low Tensile Stress." Key Engineering Materials 525-526 (November 2012): 317–20. http://dx.doi.org/10.4028/www.scientific.net/kem.525-526.317.

Full text
Abstract:
In this paper, the diffusion coefficient of vacancy-solute complex and diffusion coefficient of solute atoms, P, in non-equilibrium grain-boundary segregation under low tensile stress in steel 12Cr1MoV are calculated based on the model developed by Xu. Both the simulation and experimental kinetics curves are achieved. Results show that the calculated result with the kinetic equations perfectly fits with the experimental observations for phosphorus in steel 12Cr1MoV under low tensile stress. In the segregation process, the rate of phosphorus segregation is high due to a large diffusivity of the complex. In the de-segregation process, the level of phosphorus segregation decreases with increasing stress aging time. But the rate of phosphorus desegregation from grain boundaries to centre is slower compared with that in segregation for the diffusion coefficient of phosphorus atoms is far lower than the complexes.
APA, Harvard, Vancouver, ISO, and other styles
9

Terblans, J. J., and G. N. van Wyk. "The effect of vacancy formation energy on surface segregation kinetics." Radiation Effects and Defects in Solids 156, no. 1-4 (December 2001): 87–93. http://dx.doi.org/10.1080/10420150108216877.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Mizoguchi, Teruyasu, Yukio Sato, James P. Buban, Katsuyuki Matsunaga, Takahisa Yamamoto, and Yuichi Ikuhara. "Sr vacancy segregation by heat treatment at SrTiO3 grain boundary." Applied Physics Letters 87, no. 24 (December 12, 2005): 241920. http://dx.doi.org/10.1063/1.2146051.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Vacancy segregation"

1

Castin, Nicolas. "Atomistic kinetic Monte Carlo simulation of precipitation and segregation in metals for nuclear applications, using a novel methodology based on artificial neural networks." Doctoral thesis, Universite Libre de Bruxelles, 2011. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209893.

Full text
Abstract:
La sécurité des installations nucléaires est constamment un souci majeur lors de leur exploitation, mais aussi lors de la conception de nouveaux réacteurs. Leurs durées de vie est limitée à cause des changements de comportement mécanique de leurs composants métalliques (principalement la cuve du réacteur mais aussi ses composants internes), qui sont accélérés ou induits par l’irradiation de neutrons. Une prédiction quantitative précise de ces changements, en fonction de la composition des matériaux et des conditions d'irradiation, est par conséquent un objectif de première importance pour la science des matériaux nucléaires. La modélisation est, de nos jours, considérée comme un complément vital aux approches expérimentales, avec l'objectif d’apporter une meilleure compréhension des processus physiques et chimiques qui se produisent dans les matériaux métalliques sous irradiation de neutrons.

La modélisation des effets de l'irradiation de neutrons dans les aciers est par nature un problème multi-échelle. Le point de départ est la simulation des cascades de collisions atomiques initiées par les neutrons à hautes énergies qui pénètrent dans le matériau, créant ainsi des défauts ponctuels mobiles. Différents modèles physiques, considérant des échelles de temps et de longueur croissantes, doivent être développés afin de convenablement tenir en compte de tous les différents processus qui provoquent des changements de comportement macroscopique, à cause de la présence de ces défauts ponctuels mobiles. En outre, des liens entre les différents modèles doivent être créés, parce que les prédictions de chacun d'entre eux doivent servir de paramètres d'entrée pour les modèles qui travaillent aux échelles supérieures. Dans cette thèse, un tel lien est créé entre le niveau atomique et les modèles à gros-grains, en développant un nouvel algorithme Monte-Carlo cinétique atomistique (MCCA), où le matériau est décrit comme une collection d'atomes occupant des sites cristallographiques réguliers. Le processus simulé est dès lors naturellement décomposé en séries d'évènements élémentaires activés thermiquement, correspondant à la migration des défauts ponctuels (lacunes ou interstitiels) vers des positions de proches voisins, qui sont en permanence en compétition en fonction de leurs fréquences d'occurrences respectives. Ces dernières sont calculées en fonction des énergies de migrations, qui sont elles-mêmes calculées avec peu d'approximations par une méthode qui prend en compte tous les effets de la relaxation statique et des interactions chimiques à longue portée. Le nouvel algorithme MCCA est par conséquent un modèle physique, entièrement basé sur un potentiel inter-atomique approprié qui est utilisé de la manière la plus complète possible, sans définir de paramètres empiriques qui devraient être, par exemple, fittés depuis des données expérimentales. Finalement, l'algorithme est accéléré de plusieurs ordres de grandeur en utilisant des réseaux de neurones artificiels (RNA), entraînés à prédire les énergies de migrations des défauts ponctuels en fonction de leur environnement atomique local.

Le nouvel algorithme MCCA est utilisé avec succès pour simuler des expériences de recuits (pour lesquels une seule lacune doit être introduite dans la boîte), afin de valider le modèle grâce à une comparaison directe de ses prédictions avec des résultats expérimentaux trouvés dans la littérature. Une comparaison très satisfaisante est accomplie pour deux alliages modèles importants pour la science des matériaux nucléaires. Dans les deux cas, l'évolution avec le temps de recuit du rayon moyen des précipités formés, ainsi que de leur densité, est en très bonne adéquation avec les mesures expérimentales trouvées dans la littérature, contrairement à ce que d'autres auteurs avaient jusqu’à présent réussi. Ensuite, l'algorithme est généralisé avec succès afin de permettre l'introduction d'un grand nombre de lacunes, ce qui est un des deux ingrédients nécessaires pour la simulation des effets de l'irradiation de neutrons dans les métaux. Cet accomplissement permet la simulation de processus longs et complexes, par exemple le calcul de coefficients de diffusions et temps de vies d'amats de cuivre-lacunes, qui sont des paramètres d'entrée nécessaires pour des modèles de simulation à gros-grains. Finalement, des preuves convaincantes sont apportées que l'algorithme MCCA peut être, dans un futur proche, généralisé d'avantage et permettre la prise en compte des interstitiels, ouvrant ainsi la voie vers la simulation de cycles complets d'irradiation.


Doctorat en Sciences
info:eu-repo/semantics/nonPublished

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Vacancy segregation"

1

Browning, N. D., R. F. Klie, and Y. Lei. "Vacancy Segregation at Grain Boundaries in Ceramic Oxides." In Mixed Ionic Electronic Conducting Perovskites for Advanced Energy Systems, 15–25. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2349-1_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Gribat, Nina. "Conflicting rationalities and messy actualities of dealing with vacant housing in Halle/Saale, East Germany." In The New Urban Ruins, 109–24. Policy Press, 2021. http://dx.doi.org/10.1332/policypress/9781447356875.003.0007.

Full text
Abstract:
Between 1990 and 2010 the city of Halle/Saale underwent a period of urban decline, loss of jobs and population. This chapter examines how different rationalities and practices of governing vacant housing have formed in the context of intersecting local, regional and national policies and projects in Halle/Saale. It draws attention to the conflicting rationalities and messy actualities of devaluing certain types of housing while reclaiming and promoting others. The chapter focuses on two districts, one centrally located with mainly early 20th century buildings and the other one peripherally located with pre-fabricated and standardized GDR housing from the 1960s. Different problematisations of vacancy are explored: while vacancy was mobilised as an opportunity for creative re-use and investment in the central district, it was seen as a sign for a lack of demand and excess in the peripheral district. Even though the existence of a large share of publicly- and municipally-owned rent-controlled housing has cushioned processes of social segregation, the social geography of Halle/Saale is changing as a result of these messy actualities of abandonment.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Vacancy segregation"

1

Liu, Binghai, Si Ping Zhao, Eddie Er, Changqing Chen, Ghim Boon Ang, and Zhiqiang Mo. "Arsenic Segregation Induced Gate Leakage by TEM Failure Analysis." In ISTFA 2013. ASM International, 2013. http://dx.doi.org/10.31399/asm.cp.istfa2013p0434.

Full text
Abstract:
Abstract High gate to source/drain (S/D) leakage was observed at both failed pins and ET structures with random failure signatures. Detailed TEM failure analysis revealed an abnormal thin Nitrogen-rich nitride layer along the poly gate which extended to the S/D regions. Along the abnormal nitride layer, appreciable Arsenic (As) segregation occurred. The segregated As dopants at these interfaces may form a continuous conducting path, accounting for the gate to S/D leakage mechanism. The preferable As segregation at the Silicon nitride interface may be related to a vacancy-assisted As diffusion process.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Vacancy segregation"

1

Andersson, Anders D., Michael R. Tonks, Luis Casillas, Pankaj Nerikar, Shyam Vyas, Blas P. Uberuaga, and Christopher R. Stanek. Simulation of xenon, uranium vacancy and interstitial diffusion and grain boundary segregation in UO2. Office of Scientific and Technical Information (OSTI), October 2014. http://dx.doi.org/10.2172/1163255.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Vacancy segregation' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography