Experimental study of the double kink formation kinetics and kink mobility on the dislocation line in Si single crystals

1986 ◽  
Vol 97 (2) ◽  
pp. 469-478 ◽  
Author(s):  
B. Ya. Farber ◽  
Yu. L. Iunin ◽  
V. I. Nikitenko
Keyword(s):  
Experimental Study ◽  
Single Crystals ◽  
Dislocation Line ◽  
Formation Kinetics ◽  
Double Kink

Quantitative analysis of in situ straining experiments in the case of strong frictional forces

1978 ◽  
Vol 36 (1) ◽  
pp. 570-571
Author(s):  
F. Louchet ◽  
L.P. Kubin
Keyword(s):  
Strain Rate ◽  
Radiation Effects ◽  
Dislocation Line ◽  
Critical Length ◽  
Local Strain ◽  
Local Flow ◽  
Double Kink ◽  
Dislocation Densities ◽  
Frictional Forces ◽  
Local Strain Rate

Investigation of frictional forces -Experimental techniques and working conditions in the high voltage electron microscope have already been described (1). Care has been taken in order to minimize both surface and radiation effects under deformation conditions.Dislocation densities and velocities are measured on the records of the deformation. It can be noticed that mobile dislocation densities can be far below the total dislocation density in the operative system. The local strain-rate can be deduced from these measurements. The local flow stresses are deduced from the curvature radii of the dislocations when the local strain-rate reaches the values of ∿ 10-4 s-1.For a straight screw segment of length L moving by double-kink nucleation between two pinning points, the velocity is :where ΔG(τ) is the activation energy and lc the critical length for double-kink nucleation. The term L/lc takes into account the number of simultaneous attempts for double-kink nucleation on the dislocation line.

Experimental study of excimer formation kinetics in a discharge-pumped KrF excimer laser

1994 ◽  
Vol 105 (1-2) ◽  
pp. 133-141 ◽  
Author(s):  
H. Yoshida ◽  
K. Nakamura ◽  
H. Ninomiya ◽  
S. Horiguchi
Keyword(s):  
Experimental Study ◽  
Excimer Laser ◽  
Formation Kinetics ◽  
Excimer Formation ◽  
Krf Excimer Laser

Scaling in dimer breaking by impurities inCuGeO3: A comparative experimental study of Zn-, Mg-, Ni-, and Si-doped single crystals

1998 ◽  
Vol 58 (13) ◽  
pp. 8202-8205 ◽  
Author(s):  
B. Grenier ◽  
J.-P. Renard ◽  
P. Veillet ◽  
C. Paulsen ◽  
G. Dhalenne ◽  
...  
Keyword(s):  
Experimental Study ◽  
Single Crystals ◽  
Si Doped

Experimental Study of the High Temperature Mechanical Behaviors of TLP Bonding of Two Ni-Base Single Crystals

2005 ◽  
Vol 297-300 ◽  
pp. 1489-1494 ◽  
Author(s):  
T. Li ◽  
Qing Yuan Wang ◽  
Ai Qin Wang ◽  
Z.X. Wen ◽  
Zhu Feng Yue
Keyword(s):  
Experimental Study ◽  
High Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Base Material ◽  
Static Strength ◽  
Loading Conditions ◽  
Mechanical Behaviors ◽  
Tensile Direction ◽  
Tlp Bonding

In this paper, the mechanical behavior of Ni-base single crystals joint created by TLP bonding is presented. Experimental study has been performed on the TLP single crystal under loading conditions of static uniaxial tension, creep and Three-points-bending (T-P-B) at temperature of 850 °C. Specimens made of the base material, Ni-base single crystal specimens without bonding, were also tested under the same loading conditions. The mechanical behaviors of TLP single crystal is compared to the behaviors of base material. It was found that the static strength of the TLP specimens with the boundary normal to the tensile direction was 63% of the strength of the base material. The creep strength and the fracture ductile strength was more than 57% and 55% of that of the single crystal base material, respectively. The macro and micro graphs of fracture surfaces of specimens indicated that the fracture modes of the samples were brittle fracture.

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