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C‐Type Relationship between Critical Time and Evaporation Parameter for Surface Segregation in the Case of Evaporation
Author(s) -
Zheng Lei,
Wang Bo,
Meng Fangliang,
Meng Ye,
Cui Fenge,
Yun Bing
Publication year - 2020
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.202000114
Subject(s) - evaporation , thermodynamics , kinetic energy , materials science , surface (topology) , kinetics , flux (metallurgy) , alloy , type (biology) , metallurgy , physics , mathematics , classical mechanics , geometry , ecology , biology
The relationship between the critical time and evaporation parameter is discussed in terms of the kinetic model for surface segregation in the case of evaporation. An interesting phenomenon is observed that the variation of critical time obeys a C‐type law in kinetic curves with different evaporation parameters. The C‐type law of critical time is found to be caused by that of maximum evaporation flux. The existence of C‐type law is proved by the fitted kinetics curve of the Mg surface segregation of Al–0.8 wt% Mg alloy, which confirms the model of surface segregation in the case of evaporation to be reliable.