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Meeting High Performance Decorative Chromium Plating Specifications using Trivalent Chrome Plating Systems
Technical Paper
2008-01-1459
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Decorative chromium electroplating from an electrolyte based on chromium trioxide has been successfully used for many years. The deposit satisfies many demands including aesthetics, durability and economy. However, chromium trioxide is classified as carcinogenic and PFOS (which is used as a mist suppressant in these processes) has been shown to be bio accumulative. A PFOS free system based on trivalent chromium sulphate salts is proposed which avoids these issues and is capable of meeting recognised high performance standards. Production experience proves that this new system is able to satisfy even the most demanding automotive chromium plating applications.
This paper will identify the issues driving platers to consider alternative technology, outline why supply chain partners need to be aware of these issues and explain why this new trivalent chromium technology is now a viable alternative to traditional hexavalent chrome plating processes.
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Authors
Citation
Gardner, A., "Meeting High Performance Decorative Chromium Plating Specifications using Trivalent Chrome Plating Systems," SAE Technical Paper 2008-01-1459, 2008, https://doi.org/10.4271/2008-01-1459.Also In
References
- 2003 Standard Method for Copper-Accelerated Acetic Acid-Salt Spray (Fog) Testing (CASS Test) ASTM International
- 2003 Standard Specification for Decorative Electroplated Coatings of Copper Plus Nickel Plus Chromium and Nickel Plus Chromium ASTM International
- 2003 Standard Practice for Rating of Electroplated Panels Subjected to Atmospheric Exposure ASTM International
- 2003 Standard Specification for Decorative Electroplated Coatings of Copper Plus Nickel Plus Chromium on Plastics ASTM International
- 2003 Standard Test Method for Simultaneous Thickness and Electrode Potential Determination of Individual Layers in Multilayer Nickel Deposit (STEP Test) ASTM International
- Brook, D. Footitt, A. Nwaogu, T.A. ‘Environmental risk evaluation report’ 2004
- Hendricks, J.A. ‘Multi layer Multi metal electroplated protective coating’
- Handy, S.L. Oduoza, C.F. Pearson, T. ‘Theoretical aspects of electrodeposition of decorative chromium from trivalent electrolytes and corrosion rate study of different nickel/chromium coatings’ Transactions of the Institute of Metal Finishing 84 6 300 308
- Hardesty, D.W. ‘The Durable CASS test’ International Automotive Engineering Congress Detroit, Mich. January 8 - 12 1973 Society of Automotive Engineers
- 1998 Guide to Nickel Plating
- MacDermid Inc. Commercial process TriMacIII MacDermid Inc Waterbury, Connecticut, USA
- MacDermid Inc. Commercial process NiMac Hypore XL MacDermid Inc Waterbury, Connecticut, USA
- Oderkerken, J.M. ‘Method for covering objects with a decorative bright nickel/chromium coating, as well as objects covered by applying this method’ 1969
- Organisation for Economic Co-operation and Development ‘Hazard assessment of Perfluorooctane Sulfonate (PFOS) and its salts’ ENV/JM/RD(2002)17/FINAL November 2002
- OSHA 2006 Occupational Exposure to Hexavalent Chromium http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=FEDERAL_REGISTER&p_id=18599 rd September 2007
- 2007 Advancement in the control and prediction of CASS test performance http://www.pfonline.com/articles/010502.html st September 2007
- Richter, C. ‘OSHA's Proposed PEL for Hexavalent Chromium: Background & Outlook’ Detroit, Michigan August 2005
- Snyder, D.L. Davies, H.A. DiBari, G.A. 1990 900766 Durability and Quality Performance of Today's Bright Electroplated Steel Bumpers Detroit, Michigan SAE
- U.S. Environmental Protection Agency ‘Toxicological Review of Hexavalent Chromium’ Washington, DC
- U.S. DEPARTMENT OF LABOR, OCCUPATIONAL SAFETY & HEALTH ADMINISTRATION 2006 Occupational Exposure to Hexavalent Chromium - 71:10099-10385 http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=FEDERAL_REGISTER&p_id=18599 March 2006
- Vogt, J.F. ‘The high protective value of duplex nickel plating’ 1953
- ‘The necessity and safety of the continued use of perfluorooctane sulphonate (PFOS) in electroplating beyond chromium plating’ 2006