4 research outputs found
The effect of concentration and structure of LA/CE based inhibitors on the corrosion rate of mild steel in aqueous chloride solution
The inhibition of corrosion and hydrogen embrittlement in sae 4340 steel with the rare earth compound lanthanum 4 hydroxy cinnamate
The effects of microstructure on the corrosion mechanism of steels used in ship structures
The inhibition of hydrogen embrittlement in SAE 4340 steel in an aqueous environment with the rare earth compound lanthanum 4 hydroxy cinnamate
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