Published December 30, 2008 | Version v1
Journal article Metadata-only

Lanthanum-based conversion coating on Mg-8Li alloy

Creators

  • 1. Key Laboratory of Super-light Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China)

Description

The lanthanum-based conversion coating on Mg-8Li alloy was investigated and the corrosion resistance was evaluated as well. The surface and cross-sectional morphology were observed by scanning electron microscopy (SEM), and composition of the lanthanum conversion coating was characterized by energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The corrosion resistance was assessed by means of potentiodynamic polarization measurements and open circuit potential (OCP). The results revealed that the conversion coating was homogeneous and uniform, and had an aciculate-like structure. The coating exhibited good adhesion to substrate with thickness of about 10 μm, and it was mainly composed of La(OH)3 as identified by XPS, consistent with compositional analysis using EDS. The electrochemical results revealed that the lanthanum-based conversion coating possessed better corrosion resistance than the Mg-8Li substrate.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.apsusc.2008.07.094

Additional details

Identifiers

DOI
10.1016/j.apsusc.2008.07.094;
PII
S0169-4332(08)01697-8;

Publishing Information

Journal Title
Applied Surface Science
Journal Volume
255
Journal Issue
5
Journal Page Range
p. 2338-2341
ISSN
0169-4332
CODEN
ASUSEE

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41015322
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ADHESION; COATINGS; CORROSION RESISTANCE; ELECTROCHEMISTRY; LANTHANUM; LITHIUM 8; LITHIUM ALLOYS; MAGNESIUM ALLOYS; MORPHOLOGY; POLARIZATION; SCANNING ELECTRON MICROSCOPY; SUBSTRATES; THICKNESS; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
ALLOYS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMISTRY; DIMENSIONS; ELECTRON MICROSCOPY; ELECTRON SPECTROSCOPY; ELEMENTS; ISOTOPES; LIGHT NUCLEI; LITHIUM ISOTOPES; METALS; MICROSCOPY; MILLISECONDS LIVING RADIOISOTOPES; NUCLEI; ODD-ODD NUCLEI; PHOTOELECTRON SPECTROSCOPY; RADIOISOTOPES; RARE EARTHS; SPECTROSCOPY

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.