Method for reducing formation of electrically resistive layer on ferritic stainless steels

Rakowski, James M.

Title: Method for reducing formation of electrically resistive layer on ferritic stainless steels

Patent · Tue Feb 28 00:00:00 EST 2017

OSTI ID:1345380

Rakowski, James M.

A method of reducing the formation of electrically resistive scale on a an article comprising a silicon-containing ferritic stainless subjected to oxidizing conditions in service includes, prior to placing the article in service, subjecting the article to conditions under which silica, which includes silicon derived from the steel, forms on a surface of the steel. Optionally, at least a portion of the silica is removed from the surface to placing the article in service. A ferritic stainless steel alloy having a reduced tendency to form silica on at least a surface thereof also is provided. The steel includes a near-surface region that has been depleted of silicon relative to a remainder of the steel.

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Research Organization:: ATI Properties LLC, Albany, OR (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FC26-05NT42513

Assignee:: ATI Properties LLC

Patent Number(s):: 9,580,789

Application Number:: 13/873,272

OSTI ID:: 1345380

Resource Relation:: Patent File Date: 2013 Apr 30

Country of Publication:: United States

Language:: English

References (7)

Production of Ferritic Stainless Steel with Improved Drawing Properties Schneider, Stephen; Hultgren, Frank; Barclay, William https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/3650848 US Patent Document 3,650,848	patent	March 1972
Method for producing bright stainless steel McGuire, Michael F.; Senzarin-Kulik, Kelley L.; Denoi, Anthony J. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5830291 US Patent Document 5,830,291	patent	November 1998
Stainless steel for ozone added water and manufacturing method thereof Takeda, Kiyoko; Azuma, Shigeki; Tarutani, Yoshio https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5944917 US Patent Document 5,944,917	patent	August 1999
Method for reducing the resistivity of the corrosion-induced oxide layer, and applications Wind, Jorg; Nitschke, Felix https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6290790 US Patent Document 6,290,790	patent	September 2001
Effect of minor elements and a Ce surface treatment on the oxidation behavior of an Fe–22Cr–0.5Mn (Crofer 22 APU) ferritic stainless steel Alman, D. E.; Jablonski, P. D. International Journal of Hydrogen Energy, Vol. 32, Issue 16, p. 3743-3753 https://doi.org/10.1016/j.ijhydene.2006.08.032	journal	November 2007
The Oxidation of Ferritic Stainless Steels in Simulated Solid-Oxide Fuel-Cell Atmospheres Hammer, J. E.; Laney, S. J.; Jackson, R. W. Oxidation of Metals, Vol. 67, Issue 1-2, p. 1-38 https://doi.org/10.1007/s11085-006-9041-y	journal	January 2007
Protective coating on stainless steel interconnect for SOFCs: oxidation kinetics and electrical properties Chen, Xuan; Hou, Peggy Y.; Jacobson, Craig P. Solid State Ionics, Vol. 176, Issue 5-6, p. 425-433 https://doi.org/10.1016/j.ssi.2004.10.004	journal	February 2005

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