Defect Specific Penetrants

dc.contributor.author Crane, R.
dc.contributor.author Allinikov, S.
dc.date 2018-02-13T16:45:15.000
dc.date.accessioned 2020-06-30T01:27:23Z
dc.date.available 2020-06-30T01:27:23Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 1978
dc.date.embargo 2013-10-31
dc.date.issued 1978-05-01
dc.description.abstract <p>The failure to detect small through-the-thickness flaws in non-metallic coatings on metallic substrates can lead to corrosion rates several orders of magnitude greater than those of the bare metal. Therefore, the detection of such defects has high priority even though presently used inspection procedures are both expensive and difficult to perform. It has recently been shown that it is possible to make a penetrant that can detect those through-thickness flaws to the exclusion of all others. These penetrants are made by adding chelating agents to a carrier fluid such as an alcohol. The chelating agent becomes fluorescent when it contacts a metal substrate. Initial work utilized the chelating agent 8-hydroxy quinoline, and is sensitive to most metals. Current work is concentrating on chelating agents that are specific to certain metals. Thus, cracks in chromium coatings or steel can be detected if they penetrate on the steel base. Work on organic and biological agents show promise.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/cnde_yellowjackets_1977/30/
dc.identifier.articleid 1029
dc.identifier.contextkey 4780637
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath cnde_yellowjackets_1977/30
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/15916
dc.language.iso en
dc.relation.ispartofseries Interdisciplinary Program for Quantitative Flaw Definition Annual Reports
dc.source.bitstream archive/lib.dr.iastate.edu/cnde_yellowjackets_1977/30/1977_YellowJacket_029_Crane_DefectSpecific.pdf|||Fri Jan 14 23:27:02 UTC 2022
dc.subject.disciplines Materials Science and Engineering
dc.subject.keywords Nondestructive Evaluation
dc.title Defect Specific Penetrants
dc.type article
dc.type.genre 05_new_techniques_and_phenomena
dspace.entity.type Publication
relation.isSeriesOfPublication 43920e40-d127-4f4c-9087-dc709815fe7f
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