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Steady state multiplicity and oscillations in passive film formation

✍ Scribed by Jan B. Talbot; R.A. Oriani

Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 682 KB
Volume: 30
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(85)85003-9

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✦ Synopsis

Ahatract

-The steady state behavior of two simple passivation models are examined by varying the functional forms of adsorption, desorption and homogeneous reaction rates in one case and surface reaction rates in the other case. Multiple steady states and oscillations can occur when a factor of exp( -PI?) is in the desorption rate. The minimum requirements of the models are anoclic dissolution of a metallic ion and either subsequent homogeneous reactions or a surface reaction to form a single adsorbate that has a multiplevalued isotherm arising from the desorption functionality.

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