Corrosion Behaviors of Fluoride Treated Cast Magnesium Alloy in Hank’s Solution

2016 ◽  
Vol 852 ◽  
pp. 113-119
Author(s):  
Chun Yan Zhang ◽  
Ming Bo Yang ◽  
Cheng Long Liu
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Az31 Alloy ◽  
Second Phase ◽  
Magnesium Alloy Az31 ◽  
Corrosion Behaviors ◽  
Second Phases ◽  
Cast Magnesium Alloy ◽  
Cast Magnesium ◽  
Hank’S Solution

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.

Particle-Stimulated Nucleation of Dynamic Recrystallization in AZ31 Alloy at Elevated Temperatures

2005 ◽  
Vol 488-489 ◽  
pp. 261-264 ◽  
Author(s):  
Lan Jiang ◽  
Guang Jie Huang ◽  
Stéphane Godet ◽  
John J. Jonas ◽  
Alan A. Luo
Keyword(s):  
Magnesium Alloy ◽  
Elevated Temperatures ◽  
Az31 Alloy ◽  
Coarse Grained ◽  
Second Phase ◽  
Compression Tests ◽  
Second Phase Particles ◽  
The Matrix ◽  
Second Phases ◽  
Cast Magnesium

Particle-stimulated nucleation (PSN) was investigated in magnesium alloy AZ31 to study the effect of the evolution of second-phases during extrusion and other metal forming processes. Compression tests were carried out on samples taken from coarse-grained as-cast magnesium alloy billets containing a lamellar Mg17All2 eutectic phase and (Al, Mn) particles. These revealed that particle-stimulated DRX nucleation (PSN) was taking place during hot deformation and that this is facilitated by the fragmentation of the Mg17All2. When Mg17All2 dissolves into the matrix at about 350°C, the (Al, Mn) particles remain effective in producing PSN at temperatures up to at least 400°C. This suggests that alloy design leading to a suitable distribution of second-phase particles can improve the properties and formability of wrought magnesium alloys.

MAGNESIUM MSR-B

Alloy Digest ◽  
1967 ◽  
Vol 16 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Magnesium Alloy ◽  
Yield Strength ◽  
Physical Properties ◽  
Heat Treating ◽  
Temperature Performance ◽  
Cast Magnesium Alloy ◽  
Cast Magnesium

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.

MAGNESIUM MSR-A

Alloy Digest ◽  
1962 ◽  
Vol 11 (7) ◽  
Keyword(s):  
Compressive Strength ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Magnesium Alloy ◽  
Yield Strength ◽  
Physical Properties ◽  
Heat Treating ◽  
Temperature Performance ◽  
Cast Magnesium Alloy ◽  
Cast Magnesium

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.

Corrosion resistance of aged die cast magnesium alloy AZ91D

2004 ◽  
Vol 366 (1) ◽  
pp. 74-86 ◽  
Author(s):  
Guangling Song ◽  
Amanda L Bowles ◽  
David H StJohn
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Alloy Az91d ◽  
Die Cast ◽  
Cast Magnesium Alloy ◽  
Cast Magnesium

Influence of Silane on Corrosion Performance of Silane-Modified Acrylate Interpenetrating Polymer Network Coating on Magnesium Alloy AZ31

2011 ◽  
Vol 686 ◽  
pp. 186-191
Author(s):  
Rong Chang Zeng ◽  
Chen Lan Liu ◽  
Ling Hong Kong ◽  
Hong Zhi Cui
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Salt Spray ◽  
Polymer Network ◽  
Az31 Alloy ◽  
Interpenetrating Polymer Network ◽  
Neutral Salt ◽  
Corrosion Performance ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

The possibility that various silane treatments may enhance the corrosion resistance of a magnesium alloy AZ31 with silane-modified acrylate interpenetrating polymer network (IPN) coating has been investigated. Potentiodynamic electrochemical tests and neutral salt spray test were applied to evaluate the corrosion performance of the alloy. The results show that silane film improves corrosion resistance of the AZ31 alloy with and without IPN coating. The silane-modified IPN coatings improved more than 4 orders of magnitude of the corrosion resistance of the substrate.

Phosphoric Conversion Coating and Chromic Conversion Coating for Die-Cast Magnesium Alloy ZM5

2005 ◽  
Vol 488-489 ◽  
pp. 831-834 ◽  
Author(s):  
Yong Hu ◽  
Nan Du ◽  
Qing Zhao ◽  
Ya Zhou ◽  
Linggang Meng
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Conversion Coating ◽  
Conversion Coatings ◽  
Die Cast ◽  
Cast Magnesium Alloy ◽  
Cast Magnesium

In the present paper, phosphoric and chromic conversion coatings were prepared for the die-cast magnesium alloy ZM5. Both two kinds of chemical converting coatings are of evident corrosion resistance. Their compositions, morphologies and crystal characteristics were discussed.

Microstructure and second-phase particles in low- and high-pressure die-cast magnesium alloy AM50

2005 ◽  
Vol 36 (8) ◽  
pp. 1989-1997 ◽  
Author(s):  
Val Y. Gertsman ◽  
Jian Li ◽  
Su Xu ◽  
James P. Thomson ◽  
Mahi Sahoo
Keyword(s):  
High Pressure ◽  
Magnesium Alloy ◽  
Second Phase ◽  
Die Cast ◽  
Second Phase Particles ◽  
Cast Magnesium Alloy ◽  
Alloy Am50 ◽  
Cast Magnesium
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