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Title: Evaluation of Alternate Stainless Steel Surface Passivation Methods

Abstract

Stainless steel containers were assembled from parts passivated by four commercial vendors using three passivation methods. The performance of these containers in storing hydrogen isotope mixtures was evaluated by monitoring the composition of initially 50% H{sub 2} 50% D{sub 2} gas with time using mass spectroscopy. Commercial passivation by electropolishing appears to result in surfaces that do not catalyze hydrogen isotope exchange. This method of surface passivation shows promise for tritium service, and should be studied further and considered for use. On the other hand, nitric acid passivation and citric acid passivation may not result in surfaces that do not catalyze the isotope exchange reaction H{sub 2} + D{sub 2} {yields} 2HD. These methods should not be considered to replace the proprietary passivation processes of the two current vendors used at the Savannah River Site Tritium Facility.

Authors:
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC
Sponsoring Org.:
USDOE
OSTI Identifier:
881451
Report Number(s):
WSRC-TR-2005-00246
TRN: US200613%%453
DOE Contract Number:  
DE-AC09-96SR18500
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CITRIC ACID; CONTAINERS; ELECTROPOLISHING; EVALUATION; HYDROGEN ISOTOPES; ISOTOPIC EXCHANGE; MASS SPECTROSCOPY; MIXTURES; MONITORING; NITRIC ACID; PASSIVATION; STAINLESS STEELS; TRITIUM

Citation Formats

Clark, Elliot A. Evaluation of Alternate Stainless Steel Surface Passivation Methods. United States: N. p., 2005. Web. doi:10.2172/881451.
Clark, Elliot A. Evaluation of Alternate Stainless Steel Surface Passivation Methods. United States. https://doi.org/10.2172/881451
Clark, Elliot A. 2005. "Evaluation of Alternate Stainless Steel Surface Passivation Methods". United States. https://doi.org/10.2172/881451. https://www.osti.gov/servlets/purl/881451.
@article{osti_881451,
title = {Evaluation of Alternate Stainless Steel Surface Passivation Methods},
author = {Clark, Elliot A},
abstractNote = {Stainless steel containers were assembled from parts passivated by four commercial vendors using three passivation methods. The performance of these containers in storing hydrogen isotope mixtures was evaluated by monitoring the composition of initially 50% H{sub 2} 50% D{sub 2} gas with time using mass spectroscopy. Commercial passivation by electropolishing appears to result in surfaces that do not catalyze hydrogen isotope exchange. This method of surface passivation shows promise for tritium service, and should be studied further and considered for use. On the other hand, nitric acid passivation and citric acid passivation may not result in surfaces that do not catalyze the isotope exchange reaction H{sub 2} + D{sub 2} {yields} 2HD. These methods should not be considered to replace the proprietary passivation processes of the two current vendors used at the Savannah River Site Tritium Facility.},
doi = {10.2172/881451},
url = {https://www.osti.gov/biblio/881451}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 31 00:00:00 EDT 2005},
month = {Tue May 31 00:00:00 EDT 2005}
}