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Oxidation of solid aluminium silicon alloys in air
Author(s) -
Yaneva S.,
Stojanova L.,
Markov T.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170220219
Subject(s) - aluminium , silicon , kinetics , materials science , solid solution , activation energy , exponent , metallurgy , thermodynamics , analytical chemistry (journal) , chemistry , inorganic chemistry , linguistics , physics , philosophy , chromatography , quantum mechanics
The kinetics of oxidation of solid Al–Si alloys in air was studied at temperature interval between 490 °C and 532 °C. The initial time intervals in which oxidation is governed by a parabolic quadratic low were found form the weight time‐gain curves. At temperature higher than 512 °C the exponent of the parabolic ratio differs from 2. It was shown the influence of the alloying element Si on the oxidation and the effective activation energies of oxidation of AlSi alloys were calculated. They are considerably higher than the effective activation energies for pure aluminium.