Improvement of corrosion resistance and biocompatibility of rare-earth WE43 magnesium alloy by neodymium self-ion implantation

2015 ◽  
Vol 94 ◽  
pp. 142-155 ◽  
Author(s):  
Weihong Jin ◽  
Guosong Wu ◽  
Hongqing Feng ◽  
Wenhao Wang ◽  
Xuming Zhang ◽  
...  
2013 ◽  
Vol 529 ◽  
pp. 407-411 ◽  
Author(s):  
Ying Zhao ◽  
Guosong Wu ◽  
Qiuyuan Lu ◽  
Jun Wu ◽  
Ruizhen Xu ◽  
...  

Alloy Digest ◽  
2015 ◽  
Vol 64 (9) ◽  

Abstract Elektron EQ21 is a casting high strength magnesium alloy developed as a heat treatable alloy with rare earth element additions. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive, shear, and bend strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, forming, heat treating, machining, joining, and surface treatment. Filing Code: Mg-80. Producer or source: Magnesium Elektron Wrought Products, North America.


2015 ◽  
Vol 44 (3) ◽  
pp. 521-526 ◽  
Author(s):  
Liang Chenghao ◽  
Wang Shusen ◽  
Huang Naibao ◽  
Zhang Zhihong ◽  
Zhang Shuchun ◽  
...  

Author(s):  
N Sivashanmugam ◽  
KL Harikrishna ◽  
S R Koteswara Rao ◽  
N Rameshbabu ◽  
P Manojkumar

Abstract Magnesium and its alloys are extensively used in the defence, aerospace and automotive industries, owing to their excellent mechanical properties. But there is a requirement of corrosion prevention treatment before using it for applications, since the corrosion resistance of Mg alloy is poor. In this work, a study on the mechanical properties of friction stir welded ZE41 rare earth magnesium alloy thick plates of 15mm and 25mm, was carried out. A metallographic examination and mechanical tests were conducted on both the welds. Furthermore, Plasma Electrolytic Oxidation (PEO), a surface conversion treatment was carried out on both the base material as well as on the friction stir butt joints. X-ray diffraction and scanning electron microscopy analysis were carried out on all the samples, with and without coating. The coated and uncoated samples were assessed by potentiodynamic polarisation (PDP) tests and electrochemical impedance spectroscopy (EIS) to study the electrochemical corrosion behaviour. An outer porous layer and an inner dense layer, have been identified from the SEM images. From the corrosion tests results it was revealed that there was an improvement in the corrosion resistance of both the base metal as well as the weldments by the PEO coating process.


2012 ◽  
Vol 187 ◽  
pp. 210-214 ◽  
Author(s):  
M.Z.M. Zain ◽  
S. Illias ◽  
M. Mat Salleh ◽  
K. Azwan Ismail ◽  
Z. Nooraizedfiza

Anodization is a useful technique for forming protective films on magnesium alloys and improves its corrosion resistance. Based on the rare earth metal (REE) salt solution, the optimum parameter was selected by comparing the anti-corrosion property of anodic film. The structure, component and surface morphology of anodic film and cross-section were analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM) coupled with Energy Dispersive Spectroscopy (EDS). The corrosion behavior was evaluated by immersion test. In this paper, a dense anodic film approximately 20 µm thick was prepared on a AZ91D magnesium alloy through anodic oxidation coating. The results show that the anodic films were mainly composed of Mg17Al12, Mg17La2, MgO and amorphous compounds. The best corrosion resistance was obtained with specimen anodized in solution containing both lanthanum nitrate and magnesium, whose corrosion resistance is approximately 3 times higher than that of as-received AZ91D magnesium alloy.


Sign in / Sign up

Export Citation Format

Share Document