Positron-trapping mechanism at grain boundaries

1985 ◽  
Vol 31 (11) ◽  
pp. 6941-6946 ◽  
Author(s):  
C. Hidalgo ◽  
N. de Diego ◽  
F. Plazaola
Keyword(s):  
Grain Boundaries ◽  
Trapping Mechanism ◽  
Positron Trapping

Positron trapping at grain boundaries

1982 ◽  
Vol 27 (3) ◽  
pp. 149-152 ◽  
Author(s):  
C. Hidalgo ◽  
N. Diego
Keyword(s):  
Grain Boundaries ◽  
Positron Trapping

Positron Trapping within the Grain and at Grain Boundaries in Sintered Alumina of High Impurity Content

2004 ◽  
Vol 445-446 ◽  
pp. 177-179 ◽  
Author(s):  
A. Si Ahmed ◽  
Jerzy Kansy ◽  
Kamel Zarbout ◽  
Gérard Moya ◽  
Dominique Gœuriot
Keyword(s):  
Grain Boundaries ◽  
Impurity Content ◽  
Positron Trapping ◽  
High Impurity

Temperature dependence of positron trapping at grain boundaries

1997 ◽  
Vol 9 (31) ◽  
pp. 6749-6759 ◽  
Author(s):  
S Aina ◽  
A Dupasquier ◽  
P Folegati ◽  
N De Diego ◽  
J del Rio ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Grain Boundaries ◽  
Positron Trapping

Positron Trapping Effection at the Grain Boundaries of Fe73.5Cu1Nb3Si13.5B9 Nanocrystalline Alloys

1994 ◽  
Vol 175-178 ◽  
pp. 605-608
Author(s):  
Ya Zen Zhang ◽  
Li Jun Wang ◽  
Lin Hua Zhe ◽  
Zi Bin Zhou
Keyword(s):  
Grain Boundaries ◽  
Nanocrystalline Alloys ◽  
Positron Trapping

Positron trapping at grain boundaries

1993 ◽  
Vol 48 (13) ◽  
pp. 9235-9245 ◽  
Author(s):  
A. Dupasquier ◽  
R. Romero ◽  
A. Somoza
Keyword(s):  
Grain Boundaries ◽  
Positron Trapping

scholarly journals Positron-trapping mechanism at dislocations in Zn

1987 ◽  
Vol 36 (13) ◽  
pp. 6740-6745 ◽  
Author(s):  
Carlos Hidalgo ◽  
Soren Linderoth ◽  
Nieves de Diego
Keyword(s):  
Trapping Mechanism ◽  
Positron Trapping

Morphology, Distribution and Identification of Micro-Constituents Along Grain Boundaries in Nickel-Base Alloys

1973 ◽  
Vol 31 ◽  
pp. 176-177
Author(s):  
D. E. Fornwalt ◽  
A. R. Geary ◽  
B. H. Kear
Keyword(s):  
Electron Microscope ◽  
Grain Boundaries ◽  
Volume Fraction ◽  
Rupture Life ◽  
Stress Rupture ◽  
High Volume ◽  
Precipitate Morphology ◽  
Stress Rupture Life ◽  
Nickel Base ◽  
Scanning Electron

A systematic study has been made of the effects of various heat treatments on the microstructures of several experimental high volume fraction γ’ precipitation hardened nickel-base alloys, after doping with ∼2 w/o Hf so as to improve the stress rupture life and ductility. The most significant microstructural chan§e brought about by prolonged aging at temperatures in the range 1600°-1900°F was the decoration of grain boundaries with precipitate particles.Precipitation along the grain boundaries was first detected by optical microscopy, but it was necessary to use the scanning electron microscope to reveal the details of the precipitate morphology. Figure 1(a) shows the grain boundary precipitates in relief, after partial dissolution of the surrounding γ + γ’ matrix.

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