scholarly journals Measurement of the cleavage energy of graphite

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Wen Wang ◽  
Shuyang Dai ◽  
Xide Li ◽  
Jiarui Yang ◽  
David J. Srolovitz ◽  
...  
Keyword(s):  
Cleavage Energy

On the cleavage energy of magnesium oxide

1976 ◽  
Vol 1 (4) ◽  
pp. 289-296 ◽  
Author(s):  
S. Boffi ◽  
M. Ricci
Keyword(s):  
Magnesium Oxide ◽  
Cleavage Energy

The cleavage energy at initiation of (110) silicon

2014 ◽  
Vol 187 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Anna Gleizer ◽  
Dov Sherman
Keyword(s):  
Cleavage Energy

Mechanical properties and superconductivity in two-dimensional B2O under extreme strain

2019 ◽  
Vol 21 (46) ◽  
pp. 25859-25864
Author(s):  
Hefei Li ◽  
Yinqiao Hao ◽  
Dan Sun ◽  
Dan Zhou ◽  
Guangtao Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Two Dimensional ◽  
Cleavage Energy

A new monolayer B2O is proposed with a cleavage energy of 26 meV Å−2.

A direct measurement of the influence of vapour, of liquid and of oriented monolayers on the interfacial energy of mica

1967 ◽  
Vol 301 (1464) ◽  
pp. 47-56 ◽  
Keyword(s):  
Contact Angle ◽  
Marked Reduction ◽  
Polar Medium ◽  
Monomolecular Layer ◽  
Interfacial Energies ◽  
A Value ◽  
Cleavage Energy ◽  
Solid Liquid ◽  
Work Done ◽  
Young's Equation

A cleavage technique has been used to measure solid/fluid interfacial energies, and to study directly the effect of various media on these energies. Solid/vapour and solid/liquid interfacial energies were measured by cleaving mica specimens first in an atmosphere of vapour and then in the corresponding liquid. In this way we have a direct means of checking the validity of Young’s equation. Results obtained with water, as representative of a polar medium, and hexane, as representative of a non-polar medium show that Young’s equation holds for systems with zero contact angle. The effect of the humidity of the surrounding atmosphere on the cleavage of mica was also investigated. Water vapour was found to produce a marked reduction in the cleavage energy. In another set of experiments the cleavage technique was used to determine the work done in separating mica surfaces covered with an adsorbed monomolecular layer of fatty acid. The results yield a value of 37 erg/cm 2 for the surface energy of a lauric acid monolayer on mica.

Ideal Cleavage Fracture of Transition-Metal Silicides: A Comparison Analysis

1998 ◽  
Vol 552 ◽  
Author(s):  
M. H. Yoo ◽  
K. Yoshimi
Keyword(s):  
Transition Metal ◽  
Interplanar Spacing ◽  
Elastic Stiffness ◽  
Comparison Analysis ◽  
Elastic Stiffness Constant ◽  
Stiffness Constant ◽  
Metal Silicides ◽  
Cleavage Energy ◽  
Simple Empirical Model ◽  
The Ideal

ABSTRACTA simple empirical model for the ideal cleavage energy, resulting from a rigid-body separation, is proposed in terms of four variables, viz., the elastic stiffness constant, the interplanar spacing, and two adjustable length parameters. The ratio of these parameters is assessed based on the available results of ab-initio slab-supercell calculations. Ideal cleavage energies and stress intensity factors of transition-metal silicides are estimated, and the available fracture toughness data are discussed.

scholarly journals Algorithms for target transformations of lattice basis vectors

2020 ◽  
Vol 76 (6) ◽  
pp. 713-718
Author(s):  
Semën Gorfman
Keyword(s):  
Electron Diffraction ◽  
Lattice Plane ◽  
Energy Calculations ◽  
Specific Target ◽  
First Case ◽  
Dimensional Version ◽  
Cleavage Energy ◽  
Diffraction Patterns ◽  
Supporting Materials ◽  
Basis Vectors

Simple algorithms are proposed for the transformation of lattice basis vectors to a specific target. In the first case, one of the new basis vectors is aligned to a predefined lattice direction, while in the second case, two of the new basis vectors are brought to a lattice plane with predefined Miller indices. The multi-dimensional generalization of the algorithm is available in the supporting materials. The algorithms are useful for such crystallographic operations as simulation of zone planes (i.e. geometry of electron diffraction patterns) or transformation of a unit cell for surface or cleavage energy calculations. The most general multi-dimensional version of the algorithm may be useful for the analysis of quasiperiodic crystals or as an alternative method of calculating Bézout coefficients. The algorithms are demonstrated both graphically and numerically.

scholarly journals Ab Initio Study of the Influence of Alloying Elements on Stability and Mechanical Properties of Selected TixAly Intermetallic Compounds and Their TixAly/Al, TixAly/Ti Interfaces in Explosively Welded Metal–Metal Composites

2021 ◽  
Author(s):  
P. Kwasniak ◽  
H. Garbacz
Keyword(s):  
Explosive Welding ◽  
Site Occupancy ◽  
Alloying Elements ◽  
Metallic Substrates ◽  
Metal Metal ◽  
Ordered Phases ◽  
Deformation Ability ◽  
Cleavage Energy ◽  
Further Development ◽  
Positive Effect

AbstractThe overall performance of joints fabricated using the explosive welding method depends directly on the brittleness of created intermetallic phases and their cohesion with metallic substrates. In this article, we used first principles calculations to show that Sn, V, Cu, and Mg alloying elements present in Ti- and Al-based alloys have a significant influence on the elastic properties and plastic deformation ability of γ-TiAl and Ti3Al. Selected solutes exhibit diversified preferential site occupancy in bulk phases and ordered phase/metallic substrate interface regions. The largest positive effect on ductility and cleavage energy was found for Cu addition (25 pct increase in the B/G ratio), while Sn largely deteriorates cleavage resistance (up to 8 pct). The presented results reveal that further development in the explosive welding field can be reached through the design/application of new alloys composed of elements that improve the properties of the ordered phases present in the joints.

Evaluating the Cleavage Energy of Brittle Single Crystals

2014 ◽  
Vol 3 (3) ◽  
pp. 20130076 ◽  
Author(s):  
Dov Sherman ◽  
Anna Gleizer
Keyword(s):  
Single Crystals ◽  
Cleavage Energy
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