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MICORRANA Development of a hyphenated online-technique for spatially resolved chemical element analysis of micro corrosion processes

English title MICORRANA Development of a hyphenated online-technique for spatially resolved chemical element analysis of micro corrosion processes
Applicant Ulrich Andrea
Number 109355
Funding scheme Project funding
Research institution Eidg. Materialprüfungs- und Forschungsanstalt (EMPA)
Institution of higher education Swiss Federal Laboratories for Materials Science and Technology - EMPA
Main discipline Material Sciences
Start/End 01.01.2006 - 31.03.2009
Approved amount 202'120.00
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Keywords (13)

local corrosion; corrosion mechanism; complex metalic alloys; electrochemical polarisation measurements; micro-capillary system; local elemental analysis; ultra trace analysis; locally resolved analysis; electrochemical polarisation; spatially and time resolved elemental analysis; small sample amounts; high salt content matrices;

Lay Summary (English)

Lead
Lay summary
Corrosion processes often initiate on weakest microstructural features such as inclusions or grain boundaries. Thus, spatially resolved methods are required for the characterization of the local chemistry controlling the corrosion mechanisms. Hence a novel micro-analytical technique is developed, which allows an element-specific, spatially and time resolved in-situ investigation of dissolution processes. The technique is based on an adjustable online microflow-capillary set-up especially designed for local in-situ experiments. The capillary is connected via flow injection analysis system FIAS to an inductively coupled plasma mass spectrometry ICP-MS. FIAS allows a transient sample introduction, whereas ICP-MS is designed for highly sensitive multi-element quantification. An additional adaptation of electrochemical tools allows a control of corrosion process during the analysis. The technique should be applied to investigate local corrosions phenomena of aluminum alloys used in automotive and aerospace applications as well as bulk metallic glasses and biodegradable alloys used for medical applications.
Direct link to Lay Summary Last update: 21.02.2013

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Associated projects

Number Title Start Funding scheme
125121 MICORRANA II - Development of a hyphenated online-technique for spatially resolved chemical element analysis of micro corrosion processes 01.04.2009 Project funding
144537 Follow-up-Proposal for the Project MICORRANA II - Development of a hyphenated online-technique for spatially resolved chemical element analysis of micro corrosion processes 01.10.2012 Project funding

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