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Title: Development of a passivated stainless steel surface

Abstract

A multi-step Q-passivation method for stainless steel is described. The method includes a first high voltage electropolishing step followed by as separate low voltage chromium enhancement step. The method can also include a vacuum heat treatment step that utilizes a cyclic ramp-up period so as to maintain a relatively low pressure and low temperature throughout the step. The method can also include a controlled oxidation step during which the surface is contacted with an oxygen/inert gas mixture at low oxygen partial pressure.

Inventors:
;
Issue Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1600197
Patent Number(s):
10450668
Application Number:
15/484,210
Assignee:
Savannah River Nuclear Solutions, LLC (Aiken, SC)
Patent Classifications (CPCs):
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25F - PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS
DOE Contract Number:  
AC09-08SR22470
Resource Type:
Patent
Resource Relation:
Patent File Date: 04/11/2017
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Korinko, Paul S., and Wyrwas, Richard B. Development of a passivated stainless steel surface. United States: N. p., 2019. Web.
Korinko, Paul S., & Wyrwas, Richard B. Development of a passivated stainless steel surface. United States.
Korinko, Paul S., and Wyrwas, Richard B. Tue . "Development of a passivated stainless steel surface". United States. https://www.osti.gov/servlets/purl/1600197.
@article{osti_1600197,
title = {Development of a passivated stainless steel surface},
author = {Korinko, Paul S. and Wyrwas, Richard B.},
abstractNote = {A multi-step Q-passivation method for stainless steel is described. The method includes a first high voltage electropolishing step followed by as separate low voltage chromium enhancement step. The method can also include a vacuum heat treatment step that utilizes a cyclic ramp-up period so as to maintain a relatively low pressure and low temperature throughout the step. The method can also include a controlled oxidation step during which the surface is contacted with an oxygen/inert gas mixture at low oxygen partial pressure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {10}
}

Patent:

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