Evaluation of the Theoretical Strength of Metals and Experimental Verification

2021 ◽  
Author(s):  
B. K. Ganulich ◽  
Ya. L. Ivanytskyi ◽  
V. М. Boiko ◽  
R. О. Shyshkovskyi
Keyword(s):  
Experimental Verification ◽  
Theoretical Strength

On the Shape of Field-Ion Emitters

1976 ◽  
Vol 34 ◽  
pp. 520-521
Author(s):  
H.C. Eaton ◽  
B.N. Ranganathan ◽  
T.W. Burwinkle ◽  
R. J. Bayuzick ◽  
J.J. Hren
Keyword(s):  
Grain Boundary ◽  
Spherical Shape ◽  
Theoretical Strength ◽  
Evaporation Process ◽  
Field Evaporation ◽  
Geometric Information ◽  
Field Ion Microscopy ◽  
Considerable Error ◽  
True Shape ◽  
Ion Microscopy

The shape of the emitter is of cardinal importance to field-ion microscopy. First, the field evaporation process itself is closely related to the initial tip shape. Secondly, the imaging stress, which is near the theoretical strength of the material and intrinsic to the imaging process, cannot be characterized without knowledge of the emitter shape. Finally, the problem of obtaining quantitative geometric information from the micrograph cannot be solved without knowing the shape. Previously published grain-boundary topographies were obtained employing an assumption of a spherical shape (1). The present investigation shows that the true shape deviates as much as 100 Å from sphericity and boundary reconstructions contain considerable error as a result.Our present procedures for obtaining tip shape may be summarized as follows. An empirical projection, D=f(θ), is obtained by digitizing the positions of poles on a field-ion micrograph.

Filamentary crystals with almost the theoretical strength of perfect crystals

1959 ◽  
Vol 67 (4) ◽  
pp. 625-662 ◽  
Author(s):  
E.M. Nadgornyi ◽  
Yurii A. Osip'yan ◽  
M.D. Perkas ◽  
V.M. Rozenberg
Keyword(s):  
Theoretical Strength

Experimental Verification of Stabilization Method for Residential DC System Based on Passivity Criterion

2017 ◽  
Vol 137 (8) ◽  
pp. 631-638 ◽  
Author(s):  
Hiroki Yamano ◽  
Koji Takechi ◽  
Hiroaki Kakigano ◽  
Makoto Ohashi
Keyword(s):  
Experimental Verification ◽  
Stabilization Method ◽  
Dc System
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