Vi. Sorokin, THE EFFECT OF SURFACE DEPOSITS ON THE CORRELATION BETWEEN THE CORROSION RATE AND POLARIZATION RESISTANCE OF METAL IN TAP WATER, Protection of metals, 31(4), 1995, pp. 404-406
With two independent techniques (measuring the polarization resistance
R(p) and weighing the specimens), B coefficients relating R(p) to the
corrosion rate of the steels 20, 10XCH Pi, and 30XTCA, copper, and ma
gnesium in nonstirred tap water are determined. The surface films form
ed during corrosion have ohmic resistance that can be included in the
R(p) measured by an R5126 indicator. This leads to anomalously high or
anomalously low B values.