Using Fluorescence XANES Measurement to Correct the Content of Hexavalent Chromium in Chromate Conversion Coatings Determined by Diphenyl Carbazide Color Test
Journal Article
·
· AIP Conference Proceedings
- Japan Synchrotron Radiation Research Institute, 1-1-14 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan)
- Mihara sangyo co., ltd. 15-26, 2chome, Mikuriyasakaemachi, Higashiosaka 577-0036 (Japan)
The Restriction of the use of certain Hazardous Substances (RoHS) directive will take effect on July 1 of this year. From that date, the use of chromate conversion coatings containing hexavalent chromium will not be permitted. By comparing the concentration of Cr6+ determined by the diphenyl carbazide color test and by fluorescence XANES (X-Ray Absorption Near Edge Structure) measurement, we can correct for the Cr6+ content of the color test. This will enable the use of the diphenyl carbazide color test to check product shipments in compliance with the RoHS directive.
- OSTI ID:
- 21049320
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 879; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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