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Metallurgical and Materials Transactions A
Erschienen in: Metallurgical and Materials Transactions A 7/2012

01.07.2012

The Inhibition of Hydrogen Embrittlement in SAE 4340 Steel in an Aqueous Environment with the Rare Earth Compound Lanthanum 4 Hydroxy Cinnamate

verfasst von: B. R. W. Hinton, M. Behrouzvaziri, M. Forsyth, R. K. Gupta, M. Seter, P. G. Bushell

Erschienen in: Metallurgical and Materials Transactions A | Ausgabe 7/2012

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Abstract

A preliminary study showed that the inhibitor lanthanum 4-hydroxy cinnamate ((La4OHcin)3) at a concentration of 400 ppm prevented the hydrogen embrittlement (HE) of SAE 4340 steel tensile specimens when tested under slow strain rate conditions in a 0.01M NaCl. In the presence of the inhibitor, a complex film formed on the surface of specimens during the slow strain rate test (SSRT), and no corrosion pits were detected. Electrochemical polarization studies indicated that the La(4OHcin)3 acted as an anodic inhibitor in the NaCl solution. This article also discusses the mechanism of HE inhibition by La(4OHcin)3.
Vorheriger Artikel Effects of Cr and B Contents on Volume Fraction of (Cr,Fe)2B and Hardness in Fe-Based Alloys Used for Powder Injection Molding
Nächster Artikel Low-Cycle Fatigue Behavior of Die-Cast Mg Alloys AZ91 and AM60

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Fußnoten
1
LACOMIT is a trademark of W. Canning & Co Ltd, Sheffield, UK.
 
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JEOL is a trademark of Japan Electron Optics Ltd., Tokyo.
 
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Metadaten
Titel
The Inhibition of Hydrogen Embrittlement in SAE 4340 Steel in an Aqueous Environment with the Rare Earth Compound Lanthanum 4 Hydroxy Cinnamate
verfasst von
B. R. W. Hinton
M. Behrouzvaziri
M. Forsyth
R. K. Gupta
M. Seter
P. G. Bushell
Publikationsdatum
01.07.2012
Verlag
Springer US
Erschienen in
Metallurgical and Materials Transactions A / Ausgabe 7/2012
Print ISSN: 1073-5623
Elektronische ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-012-1103-y

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