Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1624957 | Journal of Alloys and Compounds | 2008 | 4 Pages |
Abstract
The point defects of B2-type intermetallic compound Ni–Al have been investigated as a function of different Ni compositions ranging from 47 to 55 at.% by means of positron lifetime and coincidence Doppler-broadening (CDB) measurements. The position lifetime of the annealed samples, expressed by single-component lifetime of τ = 170–180 ps, indicates positron saturation trapping at single vacancies in Ni–Al samples. The CDB measurements have been applied to identify these vacancy-type defects formed on the Ni sublattice in the B2-phase Ni–Al alloys.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Lan-Zhi Zhang, Dan-Ni Wang, Bao-Yi Wang, Run-Sheng Yu, Long Wei,