The inhibition of hydrogen embrittlement in SAE 4340 steel in an aqueous environment with the rare earth compound lanthanum 4 hydroxy cinnamate

Hinton, B. R. W., Behrouzvaziri, M., Forsyth, M., Gupta, R. K., Seter, M. and Bushell, P. G. 2012, The inhibition of hydrogen embrittlement in SAE 4340 steel in an aqueous environment with the rare earth compound lanthanum 4 hydroxy cinnamate, Metallurgical and materials transactions A, vol. 43, no. 7, pp. 2251-2259.

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Title The inhibition of hydrogen embrittlement in SAE 4340 steel in an aqueous environment with the rare earth compound lanthanum 4 hydroxy cinnamate
Author(s) Hinton, B. R. W.
Behrouzvaziri, M.
Forsyth, M.
Gupta, R. K.
Seter, M.
Bushell, P. G.
Journal name Metallurgical and materials transactions A
Volume number 43
Issue number 7
Start page 2251
End page 2259
Total pages 9
Publisher Springer New York LLC
Place of publication New York, N. Y.
Publication date 2012
ISSN 1073-5623
1543-1940
Keyword(s) stress-corrosion cracking
strain
Summary 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.
Language eng
Field of Research 091207 Metals and Alloy Materials
030399 Macromolecular and Materials Chemistry not elsewhere classified
Socio Economic Objective 870302 Metals (e.g. Composites, Coatings, Bonding)
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, The Minerals, Metals & Materials Society and ASM International
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047079

Document type: Journal Article
Collection: Institute for Frontier Materials
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