MAGNETIC FIELD ASSOCIATED WITH ACTIVE ELECTROCHEMICAL CORROSION

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" MAGNETIC FIELD ASSOCIATED WITH ACTIVE ELECTROCHEMICAL CORROSION "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	151721
Doc. No	:	ET23513
Main Entry	:	Mshin Abedi
Title Proper	:	MAGNETIC FIELD ASSOCIATED WITH ACTIVE ELECTROCHEMICAL CORROSION
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	Previous qualitative studies have shown that SQUID magnetometers have thesensitivity to detect non-invasively the magnetic fieId associated with corrosion currents invarious metal-acid and metal-salt en~ironrnents.~~' These studies were done using strongcorrosive solutions to produce high rates of corrosion and focused primarily on geometrieswhich were intended to maximize the magnetic field generated by corrosion and to simplifyits interpretation. Nevertheless, they presaged the possibility of the use of SQUIDs For non-invasive studies of hidden corrosion. Other studies have demonstrated the possibility ofusing SQUIDs for cyclic vo~tametry,~ and for evaluating electrochernicd reactivity ofmaterials, such as 304 stainless steel.' The first SQUID magnetometer specifically designedfor corrosion studies was constructed by Quantum Magnetics (San Diego, Ca) with a spatialresolution of the order of 1 mm and sensitivity of 3 p ~ / ~ z ' R (at 1 The system wasoperated in a non-shielded laboratory environment and was equipped with a non-magneticstage and computer control. A unique feature of this system was that the detection coil arraywas oriented at 45O with respect to the dewar axis, and the dewar was mounted at a 45" angleupon a cradle. A 1 80پ‍- rotation of the dewar about......-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL46754.pdf
Title and statement of responsibility and	:	MAGNETIC FIELD ASSOCIATED WITH ACTIVE ELECTROCHEMICAL CORROSION [Thesis]