A 70 steel "Wire Beam Electrode" has been developed and used to study and evaluate Organic Coatings. It is found that the wire-resistances of every wire beam electrode distribute randomly in a resistance ran...A 70 steel "Wire Beam Electrode" has been developed and used to study and evaluate Organic Coatings. It is found that the wire-resistances of every wire beam electrode distribute randomly in a resistance range. To describe the d.c resistance property of the whole area of the sample coating, a geometric mean of wire resistances of a coated wired beam electrode,g, is used. It is shown that the reproducibility and reliability are improved by using g instead of Rlarge to evaluate Coatings. Good correlation between visual observation andg measurement was also obtained.展开更多
文摘A 70 steel "Wire Beam Electrode" has been developed and used to study and evaluate Organic Coatings. It is found that the wire-resistances of every wire beam electrode distribute randomly in a resistance range. To describe the d.c resistance property of the whole area of the sample coating, a geometric mean of wire resistances of a coated wired beam electrode,g, is used. It is shown that the reproducibility and reliability are improved by using g instead of Rlarge to evaluate Coatings. Good correlation between visual observation andg measurement was also obtained.
