000			01957nab a2200205 4500
005			20260520000938.0
008			260224s2010 xxu
245	0	0	_aElectrochemical noise monitoring of the cathodic protection of Mg-rich primers
260			_a _b _cago. 2010
270			_a10/08/2010 ; 10/08/2010
300			_a12 p. ; 085003
520			_aTranscripción del resumen del autor. Mg-rich primers provide cathodic protection of aluminum substrates similar to that provided by Zn-rich primers for steel substrates. This protection is due to the mixed potential that develops between the more active Mg particles in the binder and the aluminum substrate. Monitoring the open-circuit potential provides a measure of the cathodic protection of the primer with values changing from a mixed potential value of -1.2 V vs. saturated calomel electrode (SCE) to values consistent with the bare aluminum substrate. The application of the electrochemical noise method is presented for monitoring the performance of a Mg-rich primer beneath a topcoat. Embedded electrodes located between the topcoat and primer were used to perform measurements in a reverse configuration for electrodes on separate panels and electrodes on the same panel under immersion. The open-circuit potential was measured to track the cathodic protection behavior of the Mg-rich primer. Analysis of the measured current and potential noises and the calculated noise resistance, localized index, and associated parameters is presented. The influence of a scribe introduced to the panels on the noise measurement is demonstrated. The analysis was used to address the feasibility of noise measurement for in situ monitoring of the cathodic protection provided by the Mg-rich primer.
581			_a8
773	0		_tCorrosion _g66
942			_cARTICULO
100	1		_aAllahar, K.N. _940322
100	1		_aSu, Q. _943351
100	1		_aBierwagen, G.P. _943352
999			_c175895 _d175895