scholarly journals Influence of Rare Earth Element (Y) on Microstructure and Corrosion Behavior of Hot Extrusion AZ91 Magnesium Alloy

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3651 ◽  
Author(s):  
Yanan Cui ◽  
Yonghai Wang ◽  
Zhongyu Cui ◽  
Wenlong Qi ◽  
Jidong Wang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Rare Earth ◽  
Corrosion Behavior ◽  
Rare Earth Element ◽  
Earth Element ◽  
Volume Fraction ◽  
Reduction Rate ◽  
Mg Alloy ◽  
Second Phase ◽  
Az91 Magnesium Alloy

The influence of rare earth element (RE) Y on the microstructure and corrosion behavior of extruded AZ91 Mg alloy was surveyed via morphology characterization and corrosion performance measurements. The results indicate the corrosion resistance of the transversal section of AZ91 Mg alloy containing Y was improved compared with AZ91 Mg alloy without Y. The corrosion resistance of the longitudinal section of AZ91 Mg alloy with Y was lower than that of AZ91 Mg alloy without Y. The change of corrosion resistance can be attributed to the dispersion and volume fraction of the second phase, the effect of cathodic reduction rate, and the refined second phase.

Influence of rare earth element Ce and La addition on corrosion behavior of AZ91 magnesium alloy

2009 ◽  
Vol 60 (10) ◽  
pp. 795-803 ◽  
Author(s):  
W. Liu ◽  
F. Cao ◽  
L. Zhong ◽  
L. Zheng ◽  
B. Jia ◽  
...  
Keyword(s):  
Rare Earth ◽  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Rare Earth Element ◽  
Earth Element ◽  
Az91 Magnesium Alloy ◽  
Az91 Magnesium ◽  
La Addition

scholarly journals Effect of Rare Earth Element La on Corrosion Resistance of Powder Zinc Coating: Experiment and First Principle Calculation

2021 ◽  
Vol 2101 (1) ◽  
pp. 012058
Author(s):  
J P Xin ◽  
S Y Zhang ◽  
S P Hu
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Salt Spray ◽  
Zinc Coating ◽  
Chemical Heat Treatment ◽  
Chemical Heat ◽  
The Rare Earth

Abstract Using a combination of first-principles calculations and experimental studies to study the effect of La on the corrosion resistance of Powder sherardizing layer in metal structures. Compared to other sherardizing rare earth elements (Re), La has better adsorption with the iron matrix and has the lowest binding energy on the adsorption surface (111) of the Fe matrix. Therefore, the rare earth element La is added to the powder sherardizing process for the rare earth chemical heat treatment to reduce the defects of the powder sherardizing faults formed, improve the surface uniformity and the quality of the permeation layer. On the basis of calculation, La element was added in the process of powder sherardizing, and the corrosion performance of the formed powder galvanizing layer was studied. After alternating salt spray experiments, the degree of corrosion of the layer is relatively small and the corrosion products are predominantly layered and spherical. Electrochemical tests of the layer show that the corrosion resistance of the layer after the rare earth chemical heat treatment has improved.

Effect of trace rare earth element Er on Al-Zn-Mg alloy

2006 ◽  
Vol 16 (3) ◽  
pp. 598-603 ◽  
Author(s):  
Guo-fu XU ◽  
Shen-zhou MOU ◽  
Jun-jun YANG ◽  
Tou-nan JIN ◽  
Zuo-ren NIE ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Mg Alloy

The Effects of Rare Earth Element on the Al-Ti-B Master Alloy Second Phase

2014 ◽  
Vol 574 ◽  
pp. 380-385
Author(s):  
Hua Hu ◽  
Zhi Liu Hu ◽  
Liang Jie Wei ◽  
Jian Bao Yin
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Master Alloy ◽  
Mass Fraction ◽  
Earth Element ◽  
Intermediate Phase ◽  
Second Phase ◽  
Second Phase Particles ◽  
Master Alloys

Al-Ti-B-RE master alloy is an efficient long-term new refiner. Al-Ti-B-RE refiner was prepared by Al-Ti-B master alloy doped with LaF3, La-rich RE carbonate and Ce respectively. This paper studies the effect of different type and mass fraction of RE on the Second Phase Particles distributions and shape in Master Alloys. The addition of RE have a certain effect of refining TiAl3 and TiB2 intermediate phase. Moreover, it prevents aggregation of TiB2 intermediate phase. As the different type and addition of RE has an effect on the microstructure of master alloy, then the reasonable addition of RE is put forward.

Corrosion behavior of rapidly solidified Mg–Zn–rare earth element alloys in NaCl solution

2007 ◽  
Vol 49 (1) ◽  
pp. 255-262 ◽  
Author(s):  
Michiaki Yamasaki ◽  
Naoyuki Hayashi ◽  
Shogo Izumi ◽  
Yoshihito Kawamura
Keyword(s):  
Rare Earth ◽  
Corrosion Behavior ◽  
Rare Earth Element ◽  
Earth Element ◽  
Nacl Solution ◽  
Rapidly Solidified
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