𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effect of cerium addition on microstructure and corrosion resistance of die cast AZ91 magnesium alloy

✍ Scribed by Y.L. Song; Y.H. Liu; S.H. Wang; S.R. Yu; X.Y. Zhu

Publisher
John Wiley and Sons
Year
2007
Tongue
German
Weight
203 KB
Volume
58
Category
Article
ISSN
0947-5117

No coin nor oath required. For personal study only.

✦ Synopsis

A novel AZ91 Ce containing magnesium alloy characterized by excellent corrosion resistance is fabricated by adding rare earth Ce (cerium) in the form of a Mg-Ce master alloy. The metallographic investigation shows that Ce added to AZ91 can obviously decrease the size of b-Mg 17 Al 12 and forms Al 11 Ce 3 intermetallic compounds in the shape of fine needles. The corrosion tests and electrochemical measurements indicate that the corrosion resistance of AZ91 Ce containing magnesium alloy is obviously higher than that of AZ91. Furthermore, increasing the content of Ce in the magnesium alloy can further enhance the corrosion resistance. X-ray photoelectron spectroscopy (XPS) reveals that Ce can be incorporated into corrosion products in the form of CeO 2 in the course of corrosion. Based on the preliminary analysis, the addition of Ce can improve the corrosion resistance of AZ91 by decreasing the size of b-Mg 17 Al 12 and enhancing the protective effectiveness of corrosion products.

📜 SIMILAR VOLUMES

Microstructural characteristics and corr
Microstructural characteristics and corrosion property of non-chromate surface treatments on AZ91D magnesium alloy
✍ B. Chen; Q. Li; H. Gao; J. M. Fan; X. Tan 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 German ⚖ 381 KB 👁 1 views

## Abstract Chromate conversion coatings can be successfully used for corrosion protection of magnesium alloys. However, the environmental laws have imposed severe restrictions on chromate use in many countries. In this study, a novel protective environmental‐functionally gradient coating was forme

Plasma electrolytic oxidation of AZ91D m
Plasma electrolytic oxidation of AZ91D magnesium alloy with different additives and its corrosion behavior
✍ Fa-he Cao; Jiang-lin Cao; Zhao Zhang; Jian-qing Zhang; Chu-nan Cao 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 German ⚖ 384 KB

## Abstract Plasma electrolytic oxidation (PEO) of Mg‐based AZ91D alloys was investigated using 50 Hz AC anodizing technique in an alkaline borate solution, which contained a new kind of organic additive and without F, P, and Cr. The anodizing technological parameters have been optimized and a kind

The influence of NaCl and CO2 on the atm
The influence of NaCl and CO2 on the atmospheric corrosion of magnesium alloy AZ91
✍ R. Lindström; L.-G. Johansson; J.-E. Svensson 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 German ⚖ 411 KB 👁 1 views

The influence of NaCl and CO 2 on the atmospheric corrosion of magnesium alloy AZ91 is studied in the laboratory. Samples were exposed under carefully controlled air and flow conditions; the relative humidity was 95%, the temperature was 22.0 8C and the concentration of CO 2 was < 1 ppm or 350 ppm.

Microstructural effects on the wear resi
Microstructural effects on the wear resistance of wrought and as-cast Co-Cr-Mo-C implant alloys
✍ A. J. Saldívar-García; H. F. López 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 390 KB 👁 1 views

## Abstract The tribological behavior of two cobalt‐base alloys—an as‐cast high‐carbon and a wrought low‐carbon Co alloy—that are used as hip implant materials is examined in this work. This work discusses the experimental results of cobalt–cobalt wear pairs, in wrought and as‐cast conditions, wher

Comparative study on corrosion protectio
Comparative study on corrosion protection properties of electroless Ni-P-ZrO2 and Ni-P coatings on AZ91D magnesium alloy
✍ Y.W. Song; D.Y. Shan; E.H. Han 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 German ⚖ 300 KB

## Abstract Electroless Ni‐P‐ZrO~2~ and Ni‐P coatings on AZ91D magnesium alloy were prepared, and their corrosion protection properties were compared in this paper. The potentiodynamic curves and electrochemical impedance spectroscopy (EIS) of the coated magnesium alloy in 3.5% NaCl solution showed