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Kinetics of Decomposition in Copper–Cobalt: A Time‐Resolved ASAXS Study
Author(s) -
Goerigk G.,
Haubold H.G.,
Schilling W.
Publication year - 1997
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889897002197
Subject(s) - kinetics , copper , decomposition , cobalt , scattering , radius , spinodal decomposition , chemistry , materials science , kinetic energy , small angle x ray scattering , thermodynamics , crystallography , analytical chemistry (journal) , metallurgy , optics , physics , phase (matter) , chromatography , classical mechanics , organic chemistry , computer security , computer science
The decomposition kinetics of dilute Cu–Co alloys containing 0.5 at.% Co were investigated by time‐resolved anomalous small‐angle X‐ray scattering (ASAXS). No evidence for the existence of compositional fluctuations preceding the formation of Co precipitates was found. The separated scattering curves of the Co precipitates show `self‐similarity'. The results are interpreted in terms of a classical process of decomposition and values of 0.18 J m −2 for the interfacial energy and 10.9 Å for the critical radius are calculated.