Study of vacancies in the intermetallic compound Ni3Al by positron annihilation
作者： T -M Wang , M Shimotomai , M Doyama
DOI: 10.1088/0305-4608/14/1/006
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摘要: Specimens of the intermetallic compound Ni3Al were irradiated by 2 MeV electrons at room temperature or quenched from 900 degrees C to about 1300 and subsequently annealed isochronally. The behaviour vacancies was studied using positron lifetime. out around 215 C. formation energy a vacancy determined be EvF=1.6+or-0.2 eV. activation for motion estimated EvM=1.2+or-0.2 annealing found second-order reaction.
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