The diffusion of carbon to and from W(100)

Rawlings, K.J.; Foulias, S.D.; Hopkins, B.J.

doi:10.1016/0039-6028(81)90424-6

Cited by 56 publications

(19 citation statements)

References 23 publications

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“…The present activation entropy and the hopping frequency of the isolated C give a preexponential factor of the diffusion coefficient of 2.6 × 10 −7 m 2 /s which is consistent with Shepela's value, 3.45 × 10 −7 m 2 /s. In a lower temperature region, discrepancies between the present result and Rawlings's value [15] are very large. Rawlings's value of the activation enthalpy is 2.56 ± 0.35 eV.…”

Section: Ambient Hydrogen Effect On Interstitial Diffusion Of Ccontrasting

confidence: 91%

Interstitial Diffusion of C Interacting with Ambient H in Tungsten Crystals

Kato

Iwakiri

Morishita

et al. 2011

Plasma and Fusion Research

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Negative binding energies between interstitial C (octahedral) and H (tetrahedral) in a bulk crystal of W (bcc) were obtained with the first-principle calculations, which indicate repulsive interaction in the interstitial C-H pair. The electron cloud associated to the each interstitial atom was analyzed with Bader's method. This analysis gives negative fractional charges of −0.35 and −0.37 for the interstitial C and H, respectively, supporting the repulsive interaction between them. Interstitial diffusion of C was studied including influences of ambient H atoms in the mean field approximation and the ergodic assumption. The calculated diffusion coefficients are significantly increased by the repulsive interaction with the H atoms.

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Section: Ambient Hydrogen Effect On Interstitial Diffusion Of Ccontrasting

confidence: 91%

Interstitial Diffusion of C Interacting with Ambient H in Tungsten Crystals

Kato

Iwakiri

Morishita

et al. 2011

Plasma and Fusion Research

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show abstract

“…While the experiments performed with iridium single crystals with (111) and (100) faces did not reveal any radical differences in the results obtained, thin ribbons prove t o b e m u c h m o r e c o n v e n i e n t f o r t h e experimentalist. The major attractive feature of iridium consists in that carbon, unlike other metals, does not dissolve in its bulk, thus simplifying considerably interpretation of the results obtained.…”

Section: A Graphene On Ir(111) and Ir(100) [13-15]mentioning

confidence: 89%

“…In view of the large scatter among available published data, we used a calibrated carbon flux to determine for the Pt--C system the dependence of the . Carbon KVV Auger spectra for a single graphene layer (1) and 4-layer graphite film (2) on Pt (111). the covers were got using carbon precipitation from the metal bulk at 1300 K. Peaks with energies 150 -168 eV correspond to Pt Auger transitions.…”

Section: B Graphene On Pt(iii) Rh(iii) Re(1010) [11 12 24]mentioning

confidence: 99%

“…Re(1010) [11], Rh(111) [12], Ir (111), Ir(100) [13--15], on polycrystalline Pd [16], and carbides of a number of metals [17,18]. The simplest way of producing graphene on the surface of a variety of metals consists in exposing a heated metal sample to an atmosphere of hydrocarbons C x H y ---in most cases, this is benzene C 6 H 6 .…”

Section: Introductionmentioning

confidence: 99%

“…Graphene and graphite films form on the surface of many metals: Pt(100) [1], Pt(111) [2], Ru(001) [3], Ni(111) [4--6], Pd(100), Pd (111), Co(0001) [7], Mo (110) [8], Mo(100) [9], Fe(100) [10]. Re(1010) [11], Rh(111) [12], Ir (111), Ir(100) [13--15], on polycrystalline Pd [16], and carbides of a number of metals [17,18].…”

Section: Introductionmentioning

confidence: 99%

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Equilibrium Nucleation, Growth, and Thermal Stability of Graphene on Solids

Rut’kov¹,

Gall²

2011

Physics and Applications of Graphene - Experiments

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Review of thermo‐kinetic correlation during grain growth in nanocrystalline materials

Peng

Jian

Liu

2020

Int J Ceramic Engine & Sci

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Nanocrystalline (NC) materials exhibit many unique properties over their coarse‐grained counterparts due to the high grain boundary density and the small grain size, but they are too difficult to be used in engineering environment because of the poor thermal stability. With regard of this, two strategies are previously proposed to enhance the thermal stability (or impede the grain growth) of NC materials, that is, the thermodynamic and the kinetic approaches. Recent investigations increasingly support that the two approaches may be physically interacted and acted on each other, and they can be treated together within a unified thermo‐kinetic framework. This paper reviews the progress in the investigation of thermo‐kinetic correlation during grain growth in NC materials. First, the theoretical models to describe the concept of the thermo‐kinetic correlation and the grain growth equations developed based on the thermo‐kinetic correlation are reviewed. Second, experimental and simulated evidences to support the coexistence of thermodynamic and kinetic effects are summarized. Third, the potential application of thermo‐kinetic correlation is analyzed and discussed. This paper shows that the stabilization of NC materials can be tailored by the selection of the suitable strategies. Finally, several directions that require further exploration are identified.

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The diffusion of carbon to and from W(100)

Cited by 56 publications

References 23 publications

Interstitial Diffusion of C Interacting with Ambient H in Tungsten Crystals

Interstitial Diffusion of C Interacting with Ambient H in Tungsten Crystals

Equilibrium Nucleation, Growth, and Thermal Stability of Graphene on Solids

Review of thermo‐kinetic correlation during grain growth in nanocrystalline materials

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