Clusters with interstitial atoms from the p-block: How do Wade's rules handle them?

2005 ◽  
pp. 137-156
Author(s):  
Catherine E. Housecroft
Keyword(s):  
Interstitial Atoms

Development of the Snoek Anelastic Relaxation Correlated with Oxygen in β-Ti Alloys

2019 ◽  
Vol 298 ◽  
pp. 59-63 ◽  
Author(s):  
Zheng Cun Zhou ◽  
J. Du ◽  
S.Y. Gu ◽  
Y.J. Yan
Keyword(s):  
Internal Friction ◽  
Physical And Mechanical Properties ◽  
Peak Height ◽  
Relaxation Peak ◽  
Interstitial Oxygen ◽  
Internal Friction Peak ◽  
Β Phase ◽  
Ti Alloys ◽  
Interstitial Atoms ◽  
The Stability

The β-Ti alloys exhibit excellent shape memory effect and superelastic properties. The interstitial atoms in the alloys have important effect on their physical and mechanical properties. For the interstitial atoms, the internal friction technique can be used to detect their distributions and status in the alloys. The anelastic relaxation in β-Ti alloys is discussed in this paper. β-Ti alloys possesses bcc (body center body) structure. The oxygen (O) atoms in in the alloys is difficult to be removed. The O atoms located at the octahedral sites in the alloys will produce relaxation under cycle stress. In addition, the interaction between the interstitial atoms and substitute atoms, e.g., Nb-O,Ti-O can also produce relaxation. Therefore, the observed relaxational internal friction peak during the measuring of internal friction is widened. The widened multiple relaxation peak can be revolved into Debye,s elemental peaks in Ti-based alloys. The relaxation peak is associated with oxygen movements in lattices under the application of cycle stress and the interactions of oxygen-substitute atoms in metastable β phase (βM) phase for the water-cooled specimens and in the stable β (βS) phase for the as-sintered specimens. The damping peak height is not only associated with the interstitial oxygen, but also the stability and number of βM in the alloys.

Tuning the hydrogen evolution performance of 2D tungsten disulfide by interfacial engineering

2021 ◽  
Vol 9 (11) ◽  
pp. 7059-7067
Author(s):  
Meiqin Shi ◽  
Zhuangzhuang Jiang ◽  
Bingbao Mei ◽  
Yingying Li ◽  
Fanfei Sun ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Tungsten Disulfide ◽  
Interfacial Engineering ◽  
Interstitial Atoms

Each nanolayer was composed of WC|WS2 interfaces by forming WS2 layers firstly and then inducing carbon as the interstitial atoms to partially replace the S atoms.

scholarly journals Interaction of O–Y and O–Y–Ti clusters embedded in bcc Fe with He, vacancies and self-interstitial atoms

2019 ◽  
Vol 31 (48) ◽  
pp. 485702
Author(s):  
Muthu Vallinayagam ◽  
Matthias Posselt ◽  
Jürgen Faßbender
Keyword(s):  
Interstitial Atoms

Estimates for Diffusion Barriers and Atomic Potentials in Mgo: Cndo/2 Calculations for the Study of Microwave Effects in Sintering

1990 ◽  
Vol 189 ◽  
Author(s):  
L. Skala ◽  
V.M. Kenkre ◽  
M.W. Weiser ◽  
J.D. Katz
Keyword(s):  
Microwave Sintering ◽  
Activation Energies ◽  
Diffusion Barriers ◽  
Electron Densities ◽  
Self Consistent ◽  
Interstitial Atoms ◽  
Microwave Effects

ABSTRACTAs part of a program of investigation of microwave sintering, self-consistent CNDO/2 calculations are presented for diffusion barriers and potentials for the motion of interstitial atoms and vacancies in MgO. Clusters of 30 atoms are used in the calculations. Activation energies, diffusion barriers, shape of the potentials and electron densities are obtained.

The use of nuclear reactions and ion channeling to study trapping of Cu self-interstitial atoms by Be solute atoms in a Cu – 0.25 at.% Be crystal

1977 ◽  
Vol 55 (21) ◽  
pp. 1871-1883 ◽  
Author(s):  
M. L. Swanson ◽  
L. M. Howe ◽  
A. F. Quenneville
Keyword(s):  
Nuclear Reaction ◽  
Nuclear Reactions ◽  
Stage Iii ◽  
Ion Channeling ◽  
Interstitial Atoms ◽  
Solute Atoms

In a Cu – 0.25 at.% Be crystal, the 9Be(d,α)7Li and 9Be(d,p)10Be nuclear reaction yields were compared with backscattering yields of 0.6 MeV deuterons from Cu atoms at 30 K to study the irradiation-induced displacement of Be atoms from lattice sites. From an analysis of yields for [Formula: see text], [Formula: see text], and [Formula: see text] channels it was concluded that Be atoms were displaced approximately 0.13 nm in [Formula: see text] directions by the trapping of Cu self-interstitial atoms. Thus the trapping configuration was the [Formula: see text] mixed dumbbell. The Be atoms had returned to lattice sites by the end of stage III recovery (at 250 K).

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