A mathematical basis for calculating the water permeability of organic films supported by metal substrates
作者： E.E. Schwiderke , A.R. di Sarli
DOI: 10.1016/0033-0655(86)80004-8
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摘要: Abstract A mathematical method aimed at establishing the water permeability of organic coatings applied on metal substrates is described. The equations obtained were derived from Pick's second law. From a knowledge that dielectric constant membrane varies with content absorbed water, may be calculated using values capacitance measurement impedance vector as function immersion time fixed excitation frequence. calculus algorithm presented and discussion made details which must taken into account to guarantee reliable results explore possibilities technique.
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