scholarly journals Effect of melting method on the bio-corrosion resistance of Mg67Zn28Ca5 cast magnesium alloy in simulated body fluid

2020 ◽  
Vol 7 (1) ◽  
pp. 015409
Author(s):  
Guoqing Wang ◽  
Hao Ding ◽  
Hongyan Ding ◽  
Hong Li ◽  
Guanghong Zhou
Alloy Digest ◽  
1967 ◽  
Vol 16 (6) ◽  

Abstract Magnesium MSR-B is a heat-treatable magnesium alloy with highest yield strength of any cast magnesium alloy up to 480 F. It is pressure tight and weldable by argon-arc. It is recommended for aircraft nose wheels, missile components, transmission cases, etc. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Mg-63. Producer or source: Magnesium Elektron Ltd.


Alloy Digest ◽  
1962 ◽  
Vol 11 (7) ◽  

Abstract Magnesium MSR-A is a heat-treatable magnesium alloy with highest yield strength of any cast magnesium alloy up to 480 F. It is pressure tight and weldable by argon-arc. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, and joining. Filing Code: Mg-52. Producer or source: J. Stone & Company Ltd.


2004 ◽  
Vol 366 (1) ◽  
pp. 74-86 ◽  
Author(s):  
Guangling Song ◽  
Amanda L Bowles ◽  
David H StJohn

2014 ◽  
Vol 891-892 ◽  
pp. 267-272 ◽  
Author(s):  
Sajjad Jafari ◽  
R.K. Singh Raman

Use of Magnesium alloys as body implants are breaking into a new paradigm of biomedical engineering as they are biocompatible, biodegradable and have mechanical properties close to that of bone. Even though corrosion fatigue (CF) and stress corrosion cracking (SCC) failures are among the most common concerns for metallic implants, CF behaviour of magnesium alloys in physiological environments has received little attention. This article reports the CF results of a common cast magnesium alloy (AZ91D) in modified simulated body fluid (m-SBF). Results showed that there was a remarkable difference in fatigue strength of Mg alloys when tests were performed in m-SBF.


2016 ◽  
Vol 852 ◽  
pp. 113-119
Author(s):  
Chun Yan Zhang ◽  
Ming Bo Yang ◽  
Cheng Long Liu

Fluoride conversion films were synthesized on cast magnesium alloy AZ31 by immersion in hydrofluoric acid for different days to improve the corrosion resistance of Mg alloys as degradable implant material. The effects of the films on the corrosion behavior of the mg substrates were investigated by immersion tests. The results showed the fluoride conversion film was affected by the distribution of the chemical component of cast AZ31 alloy and the film on the second phases has more pores and micro-crack, but the bottoms of the pores were also covered by the conversion film and the substrate was not exposed through the pores. The fluoride conversion coatings significantly improved the corrosion resistance of cast AZ31 alloy. The film on the second phase with more pores is the first to dissolve. The most improved corrosion protection was achieved by 15 days treatment with the thickest film in terms of hydrogen evolution rate and damage morphology.


2014 ◽  
Vol 633 ◽  
pp. 418-421 ◽  
Author(s):  
Chen Ma ◽  
Yan Gao ◽  
Li Jie Qu ◽  
Mu Qin Li ◽  
Jin Long Yue ◽  
...  

In order to improve the corrosion resistance and bioactivity of magnesium alloy coated by ultrasound micro-arc oxidation (UMAO), different content of n-TiO2 was added into silicate electrolyte. Electrochemical corrosion and simulated body fluid (SBF) soaking were conducted, and the surface morphology, phase structure and composition also were analyzed. The results indicated that Ecorr and Icorr of UMAO biocoatings with n-TiO2 increased and decreased an order of magnitude with increase of n-TiO2, respectively. The corrosion resistance of coatings with adding 4.8g/L n-TiO2 into electrolyte was the best. After soaking in SBF, the samples increased loose weight firstly and then increased weight to form Mg3Ca (CO3)4, Mg10Cl (OH)18·5H2O and Na4Mg2(PO4) ·2H2O new phases and Mg, MgO, MgSiO3 were still exit, which showed that good bioactivity of the UMAO coatings with n-TiO2.


2013 ◽  
Vol 747-748 ◽  
pp. 295-300
Author(s):  
Kai Yang Yin ◽  
Tian Feng Lu ◽  
Qing Dong ◽  
Bing Yi Sun ◽  
Bin Chen

The effects of micro-arc oxidation (MAO) on corrosion resistance of Mg-Gd-Y-Zr magnesium alloy have been studied. The Mg-Gd-Y-Zr with thicker oxide coating presented higher corrosion resistance in simulated body fluid (SBF). The corrosion rates were measured by several methods including hydrogen evolution volume measurement, weight-loss method and determination of pH as an auxiliary reference. The surfaces of specimens were observed by SEM and white light confocal microscopy before and after the corrosion. Besides the effects of MAO, the pitting resulted from breakage of oxide coating played a notable role as well. This provided a new direction towards the enhancement of corrosion resistance of magnesium alloy.


Sign in / Sign up

Export Citation Format

Share Document