PULSED EDDY CURRENT THICKNESS MEASUREMENT OF SELECTIVE PHASE CORROSION ON NICKEL ALUMINUM BRONZE VALVES
Nickel Aluminum Bronze (NAB) is a material with marine environment applications that under certain conditions can undergo selective phase corrosion (SPC). SPC involves the removal of minority elements while leaving behind a copper matrix. Pulsed eddy current (PEC) was evaluated for determination of...
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| creator | Krause, T. W. Harlley, D. Babbar, V. K. Wannamaker, K. |
| description | Nickel Aluminum Bronze (NAB) is a material with marine environment applications that under certain conditions can undergo selective phase corrosion (SPC). SPC involves the removal of minority elements while leaving behind a copper matrix. Pulsed eddy current (PEC) was evaluated for determination of SPC thickness on a NAB valve section with access from the surface corroded side. A primarily linear response of PEC amplitude, up to the maximum available SPC thickness of 4 mm was observed. The combination of reduced conductivity and permeability in the SPC phase relative to the base NAB was used to explain the observed sensitivity of PEC to SPC thickness variations. |
| doi_str_mv | 10.1063/1.3362422 |
| format | Conference Proceeding |
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W. ; Harlley, D. ; Babbar, V. K. ; Wannamaker, K.</creator><creatorcontrib>Krause, T. W. ; Harlley, D. ; Babbar, V. K. ; Wannamaker, K.</creatorcontrib><description>Nickel Aluminum Bronze (NAB) is a material with marine environment applications that under certain conditions can undergo selective phase corrosion (SPC). SPC involves the removal of minority elements while leaving behind a copper matrix. Pulsed eddy current (PEC) was evaluated for determination of SPC thickness on a NAB valve section with access from the surface corroded side. A primarily linear response of PEC amplitude, up to the maximum available SPC thickness of 4 mm was observed. The combination of reduced conductivity and permeability in the SPC phase relative to the base NAB was used to explain the observed sensitivity of PEC to SPC thickness variations.</description><identifier>ISSN: 0094-243X</identifier><identifier>EISSN: 1551-7616</identifier><identifier>DOI: 10.1063/1.3362422</identifier><language>eng</language><publisher>United States</publisher><subject>ALLOYS ; ALUMINIUM ALLOYS ; BRONZE ; CHEMICAL REACTIONS ; CONTROL EQUIPMENT ; COPPER ; COPPER ALLOYS ; COPPER BASE ALLOYS ; CORROSION ; CURRENTS ; DIMENSIONS ; EDDY CURRENTS ; ELECTRIC CONDUCTIVITY ; ELECTRIC CURRENTS ; ELECTRICAL PROPERTIES ; ELECTRON MICROSCOPY ; ELEMENTS ; FLOW REGULATORS ; MATERIALS SCIENCE ; METALS ; MICROSCOPY ; NICKEL ALLOYS ; PERMEABILITY ; PHYSICAL PROPERTIES ; SCANNING ELECTRON MICROSCOPY ; SENSITIVITY ; SURFACES ; THICKNESS ; TIN ALLOYS ; TRANSITION ELEMENT ALLOYS ; TRANSITION ELEMENTS ; VALVES ; VARIATIONS</subject><ispartof>AIP conference proceedings, 2010, Vol.1211 (1)</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c223t-7879d61f517d9d4095e5007af47991b0a7859e9a59a0ba953dd45e28f96eac933</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27923,27924</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/21371028$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Krause, T. W.</creatorcontrib><creatorcontrib>Harlley, D.</creatorcontrib><creatorcontrib>Babbar, V. K.</creatorcontrib><creatorcontrib>Wannamaker, K.</creatorcontrib><title>PULSED EDDY CURRENT THICKNESS MEASUREMENT OF SELECTIVE PHASE CORROSION ON NICKEL ALUMINUM BRONZE VALVES</title><title>AIP conference proceedings</title><description>Nickel Aluminum Bronze (NAB) is a material with marine environment applications that under certain conditions can undergo selective phase corrosion (SPC). SPC involves the removal of minority elements while leaving behind a copper matrix. Pulsed eddy current (PEC) was evaluated for determination of SPC thickness on a NAB valve section with access from the surface corroded side. A primarily linear response of PEC amplitude, up to the maximum available SPC thickness of 4 mm was observed. The combination of reduced conductivity and permeability in the SPC phase relative to the base NAB was used to explain the observed sensitivity of PEC to SPC thickness variations.</description><subject>ALLOYS</subject><subject>ALUMINIUM ALLOYS</subject><subject>BRONZE</subject><subject>CHEMICAL REACTIONS</subject><subject>CONTROL EQUIPMENT</subject><subject>COPPER</subject><subject>COPPER ALLOYS</subject><subject>COPPER BASE ALLOYS</subject><subject>CORROSION</subject><subject>CURRENTS</subject><subject>DIMENSIONS</subject><subject>EDDY CURRENTS</subject><subject>ELECTRIC CONDUCTIVITY</subject><subject>ELECTRIC CURRENTS</subject><subject>ELECTRICAL PROPERTIES</subject><subject>ELECTRON MICROSCOPY</subject><subject>ELEMENTS</subject><subject>FLOW REGULATORS</subject><subject>MATERIALS SCIENCE</subject><subject>METALS</subject><subject>MICROSCOPY</subject><subject>NICKEL ALLOYS</subject><subject>PERMEABILITY</subject><subject>PHYSICAL PROPERTIES</subject><subject>SCANNING ELECTRON MICROSCOPY</subject><subject>SENSITIVITY</subject><subject>SURFACES</subject><subject>THICKNESS</subject><subject>TIN ALLOYS</subject><subject>TRANSITION ELEMENT ALLOYS</subject><subject>TRANSITION ELEMENTS</subject><subject>VALVES</subject><subject>VARIATIONS</subject><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2010</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNotjM1Kw0AURgdRMFYXvsGA69T5yWRylzG9NcFJUjJJUTdlmky0Iu0ieX-sKHxw4MD5CLnnbMlZLB_5UspYREJckIArxUMd8_iSBIxBFIpIvl6Tm2n6YkyA1klAPjadsbiiuFq90axrGqxa2uZF9lKhtbTE1HYNlr-2XlOLBrO22CLd5KlFmtVNU9uiruh51TlCQ1PTlUXVlfSpqat3pNvUbNHekqvRfU_-7p8L0q2xzfLQ1M9FlpqwF0LOoU40DDEfFdcDDBED5RVj2o2RBuB75nSiwINT4NjegZLDECkvkhFi73qQckEe_n5P03zYTf1h9v1nfzoefT_vBJeaM5HIHxeiTgA</recordid><startdate>20100101</startdate><enddate>20100101</enddate><creator>Krause, T. W.</creator><creator>Harlley, D.</creator><creator>Babbar, V. K.</creator><creator>Wannamaker, K.</creator><scope>OTOTI</scope></search><sort><creationdate>20100101</creationdate><title>PULSED EDDY CURRENT THICKNESS MEASUREMENT OF SELECTIVE PHASE CORROSION ON NICKEL ALUMINUM BRONZE VALVES</title><author>Krause, T. W. ; Harlley, D. ; Babbar, V. K. ; Wannamaker, K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c223t-7879d61f517d9d4095e5007af47991b0a7859e9a59a0ba953dd45e28f96eac933</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2010</creationdate><topic>ALLOYS</topic><topic>ALUMINIUM ALLOYS</topic><topic>BRONZE</topic><topic>CHEMICAL REACTIONS</topic><topic>CONTROL EQUIPMENT</topic><topic>COPPER</topic><topic>COPPER ALLOYS</topic><topic>COPPER BASE ALLOYS</topic><topic>CORROSION</topic><topic>CURRENTS</topic><topic>DIMENSIONS</topic><topic>EDDY CURRENTS</topic><topic>ELECTRIC CONDUCTIVITY</topic><topic>ELECTRIC CURRENTS</topic><topic>ELECTRICAL PROPERTIES</topic><topic>ELECTRON MICROSCOPY</topic><topic>ELEMENTS</topic><topic>FLOW REGULATORS</topic><topic>MATERIALS SCIENCE</topic><topic>METALS</topic><topic>MICROSCOPY</topic><topic>NICKEL ALLOYS</topic><topic>PERMEABILITY</topic><topic>PHYSICAL PROPERTIES</topic><topic>SCANNING ELECTRON MICROSCOPY</topic><topic>SENSITIVITY</topic><topic>SURFACES</topic><topic>THICKNESS</topic><topic>TIN ALLOYS</topic><topic>TRANSITION ELEMENT ALLOYS</topic><topic>TRANSITION ELEMENTS</topic><topic>VALVES</topic><topic>VARIATIONS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Krause, T. W.</creatorcontrib><creatorcontrib>Harlley, D.</creatorcontrib><creatorcontrib>Babbar, V. K.</creatorcontrib><creatorcontrib>Wannamaker, K.</creatorcontrib><collection>OSTI.GOV</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Krause, T. W.</au><au>Harlley, D.</au><au>Babbar, V. K.</au><au>Wannamaker, K.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>PULSED EDDY CURRENT THICKNESS MEASUREMENT OF SELECTIVE PHASE CORROSION ON NICKEL ALUMINUM BRONZE VALVES</atitle><btitle>AIP conference proceedings</btitle><date>2010-01-01</date><risdate>2010</risdate><volume>1211</volume><issue>1</issue><issn>0094-243X</issn><eissn>1551-7616</eissn><abstract>Nickel Aluminum Bronze (NAB) is a material with marine environment applications that under certain conditions can undergo selective phase corrosion (SPC). SPC involves the removal of minority elements while leaving behind a copper matrix. Pulsed eddy current (PEC) was evaluated for determination of SPC thickness on a NAB valve section with access from the surface corroded side. A primarily linear response of PEC amplitude, up to the maximum available SPC thickness of 4 mm was observed. The combination of reduced conductivity and permeability in the SPC phase relative to the base NAB was used to explain the observed sensitivity of PEC to SPC thickness variations.</abstract><cop>United States</cop><doi>10.1063/1.3362422</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-243X |
| ispartof | AIP conference proceedings, 2010, Vol.1211 (1) |
| issn | 0094-243X 1551-7616 |
| language | eng |
| recordid | cdi_osti_scitechconnect_21371028 |
| source | AIP Journals Complete |
| subjects | ALLOYS ALUMINIUM ALLOYS BRONZE CHEMICAL REACTIONS CONTROL EQUIPMENT COPPER COPPER ALLOYS COPPER BASE ALLOYS CORROSION CURRENTS DIMENSIONS EDDY CURRENTS ELECTRIC CONDUCTIVITY ELECTRIC CURRENTS ELECTRICAL PROPERTIES ELECTRON MICROSCOPY ELEMENTS FLOW REGULATORS MATERIALS SCIENCE METALS MICROSCOPY NICKEL ALLOYS PERMEABILITY PHYSICAL PROPERTIES SCANNING ELECTRON MICROSCOPY SENSITIVITY SURFACES THICKNESS TIN ALLOYS TRANSITION ELEMENT ALLOYS TRANSITION ELEMENTS VALVES VARIATIONS |
| title | PULSED EDDY CURRENT THICKNESS MEASUREMENT OF SELECTIVE PHASE CORROSION ON NICKEL ALUMINUM BRONZE VALVES |
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