Menu
Search
Filters
Close
Menu

The use of Secondary Ion Mass Spectrometry (SIMS) in Quality Control of Electroplated and Baked High-Strength Steels

Picture for 11290 The use of Secondary Ion Mass Spectrometry (SIMS) in Quality Control
Available for download
Product Number: 51300-11290-SG
ISBN: 2011 11290 CP
Author: Noam Eliaz, Elizabeta Kossoy and Gil Shemesh
Publication Date: 2011
$0.00
$20.00
$20.00
Hydrogen absorption during electroplating might result in hydrogen embrittlement (HE) of the substrate metal. Heat treatment ("baking") is commonly employed "in order to render the normally mobile hydrogen immobile". The objective of this work was to develop a sensitive analytical procedure using dynamic secondary ion mass spectrometry (SIMS) that would allow identification of improper baking during quality control. In all non-baked samples of AISI 4340 steel coated with cadmium, an increase in the hydrogen signal was found at the Cd/steel interface. In baked samples, either a peak was not observed at the interface, or it was found insignificant based on determination of the ratios between the hydrogen signals within the coating, interface and substrate. The results were reproduced after 16 months storage in a desiccator. The main effect of baking was found to be effusion of hydrogen from the interface and the substrate steel into the atmosphere. HE-related delayed failures may thus be explained in terms of a time-independent reservoir of hydrogen at the coating/substrate interface, rather than in terms of irreversible damage that occurred within the substrate during electroplating. These findings contradict some of the statements in textbooks and international standards.

Keywords: Electroplating, baking, hydrogen embrittlement, hydrogen trapping, secondary ion mass spectrometry (SIMS), high-strength steels, cadmium coating, quality control, delayed failure.
Hydrogen absorption during electroplating might result in hydrogen embrittlement (HE) of the substrate metal. Heat treatment ("baking") is commonly employed "in order to render the normally mobile hydrogen immobile". The objective of this work was to develop a sensitive analytical procedure using dynamic secondary ion mass spectrometry (SIMS) that would allow identification of improper baking during quality control. In all non-baked samples of AISI 4340 steel coated with cadmium, an increase in the hydrogen signal was found at the Cd/steel interface. In baked samples, either a peak was not observed at the interface, or it was found insignificant based on determination of the ratios between the hydrogen signals within the coating, interface and substrate. The results were reproduced after 16 months storage in a desiccator. The main effect of baking was found to be effusion of hydrogen from the interface and the substrate steel into the atmosphere. HE-related delayed failures may thus be explained in terms of a time-independent reservoir of hydrogen at the coating/substrate interface, rather than in terms of irreversible damage that occurred within the substrate during electroplating. These findings contradict some of the statements in textbooks and international standards.

Keywords: Electroplating, baking, hydrogen embrittlement, hydrogen trapping, secondary ion mass spectrometry (SIMS), high-strength steels, cadmium coating, quality control, delayed failure.
Also Purchased
Picture for Development of Centrifugally Cast 22 % Cr Duplex Steel for Line Pipe
Available for download

51314-4107-Development of Centrifugally Cast 22 % Cr Duplex Steel for Line Pipe

Product Number: 51314-4107-SG
ISBN: 4107 2014 CP
Author: Shankar Venkataraman
Publication Date: 2014
$20.00
Picture for 03462 USE OF ZIRCONIUM IN MONOMERS PRODUCTION
Available for download

03462 USE OF ZIRCONIUM IN MONOMERS PRODUCTION

Product Number: 51300-03462-SG
ISBN: 03462 2003 CP
Author: Keith Briegel, Bart S. Frechem
$20.00
Picture for Optimization of CP Design with Consideration of Temperature Variation for Offshore Structure
Available for download

51317--9672-Optimization of CP Design with Consideration of Temperature Variation for Offshore Structure

Product Number: 51317--9672-SG
ISBN: 9672 2017 CP
Author: Min Sung Hong
Publication Date: 2017
$20.00

Temperature effect on cathodic protection (CP) design current density was examined by electrochemical tests, and a case study of optimized CP design for the FPSO (Floating Production Storage and Offloading) using a computational analysis tool was performed.

 
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support