Two-detector coincidence Doppler broadening (CDB) method of positron annihilation radiation is applied to the study of precipitates in metals. As the first step, the CDB spectra for many kinds of elements are measured to obtain the 'fingerprint' of each element for the chemical analysis of the precipitates in metals. Utilizing the fingerprint of Cu, we made chemical analysis of nano-particles formed in the initial stage of thermal aging in a Fe-Cu alloy, and found that the particles are consisting of Cu only and free from vacancies, which demonstrates the usefulness of this method in the study of the precipitates. Copyright (C) 2000 Elsevier Science Ltd.
|Number of pages||6|
|Journal||Radiation Physics and Chemistry|
|Publication status||Published - 2000 Jun 1|
|Event||6th International Workshop on Positron and Positronium Chemistry (PPC-6) - Tsukuba, Jpn|
Duration: 1999 Jun 7 → 1999 Jun 11
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