scholarly journals Porous magnesium alloys prepared by powder metallurgy

2016 ◽  
Vol 50 (6) ◽  
pp. 917-922 ◽  
Author(s):  
Pavel Salvetr ◽  
Pavel Novák ◽  
Dalibor Vojtech
Keyword(s):  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Porous Magnesium

Effect of Multiwalled Carbon Nanotubes (MWCNTs) on the Micro-Hardness and Corrosion Behaviour Mg-Zn Alloy Prepared by Powder Metallurgy

2020 ◽  
Vol 1000 ◽  
pp. 115-122
Author(s):  
Nono Darsono ◽  
Murni Handayani ◽  
Franciska Pramuji Lestari ◽  
Aprilia Erryani ◽  
I Nyoman Gede Putrayasa ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Corrosion Behaviour ◽  
Density Ratio ◽  
High Strength ◽  
Multiwalled Carbon ◽  
Corrosion Properties ◽  
Biodegradable Implant ◽  
Zn Alloy

Magnesium Alloys have the potential to be applied in the various fields of applications including biomaterials. Magnesium Alloys are an interesting alloy due to its high strength to density ratio. They have been proposed as a biodegradable implant material due to its friendly effect to human body compared to another alloy. Besides its good biodegradable properties, it has a disadvantage of low hardness and corrosion properties. In order to overcome this, it has been combined with other metals such as Zinc (Zn) or Copper (Cu). To increase mechanical properties, we used Carbon Nanotubes (CNT) as reinforcement. Magnesium-Zinc (Mg-xZn) CNTs composites with several compositions was prepared by using powder metallurgy and sintered in the presence of flowing Argon (Ar) gas in tube furnace. Mg-Zn Alloy with the composition of 4% and 6% of Zn and the variation of CNTs at 0.1%, 0.3 %, and 0.5% was also prepared. Hardness testing by using microvickers showed that CNTs can increase the alloy hardness which the maximum hardness is 53.6 HV. The corrosion rates as low as 175.5 mpy exhibited for the Mg-Alloy with the composition of Mg-4-Zn with 0.1 wt.% of CNTs

scholarly journals Properties of boride-added powder metallurgy magnesium alloys

2009 ◽  
Vol 176 ◽  
pp. 012045
Author(s):  
Atsushi Tanaka ◽  
Syota Yoshimura ◽  
Takuya Fujima ◽  
Ken-ichi Takagi
Keyword(s):  
Powder Metallurgy ◽  
Magnesium Alloys

scholarly journals Mechanical Properties of Magnesium Alloys Produced by Powder Metallurgy Method.

1996 ◽  
Vol 43 (11) ◽  
pp. 1350-1353 ◽  
Author(s):  
Hajime Iwasaki ◽  
Kisho Yanase ◽  
Takasuke Mori ◽  
Mamoru Mabuchi ◽  
Kenji Higashi
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Powder Metallurgy Method

Microstructural Evolution and Mechanical Properties of AZ91 and SiCp/AZ91 Magnesium Alloys upon Rapid Solidification/Powder Metallurgy Followed by Hot Extrusion

2010 ◽  
Vol 146-147 ◽  
pp. 734-737
Author(s):  
Hui Yu ◽  
Hua Shun Yu ◽  
Zhen Ya Zhang ◽  
Guang Hui Min ◽  
Cheng Chen
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Rapid Solidification ◽  
Microstructural Evolution ◽  
Hot Extrusion ◽  
Interface Debonding ◽  
Porosity Level ◽  
Az91 Magnesium ◽  
Sic Particulates

In this study, AZ91 and SiC particulates reinforced AZ91 (SiCp/AZ91) magnesium alloys were successfully fabricated using rapid solidification/powder metallurgy technique followed by hot extrusion. Microstructural evolution and mechanical properties of the monolithic AZ91 and SiCp/AZ91 magnesium alloys were evaluated. SiC particulates were well distributed with only few agglomerated particles. The porosity level and microhardness increased as SiCp content increased because the increased surface area of SiCp, harder ceramic phases and SiCp acted obstacles to the motion of dislocations. In addition, an increase in particulate reinforcement content was observed to decrease mechanical properties of the composite compared with the unreinforced counterpart due to increasing agglomerating regions and porosity, brittle interface debonding between matrix and SiCp.

Superplastic deformation mechanism in powder metallurgy magnesium alloys and composites

2001 ◽  
Vol 49 (11) ◽  
pp. 2027-2037 ◽  
Author(s):  
H. Watanabe ◽  
T. Mukai ◽  
M. Mabuchi ◽  
K. Higashi
Keyword(s):  
Powder Metallurgy ◽  
Magnesium Alloys ◽  
Deformation Mechanism ◽  
Superplastic Deformation

Porous Magnesium for Medical Applications - Influence of Powder Size on Mechanical Properties

2013 ◽  
Vol 592-593 ◽  
pp. 342-345 ◽  
Author(s):  
Jaroslav Čapek ◽  
Dalibor Vojtěch
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Ammonium Bicarbonate ◽  
Spherical Particles ◽  
Flexural Properties ◽  
Medical Applications ◽  
Powder Size ◽  
Magnesium Powder ◽  
Space Holder ◽  
Porous Magnesium

Porous magnesium materials appear to be promising candidates for scaffold production. In this work we prepared porous magnesium samples by powder metallurgy using ammonium bicarbonate as space-holder particles. We focused on the influence of the magnesium powder size and shape on product characteristics. Samples prepared using magnesium chips showed significantly worse flexural properties than samples with similar porosities prepared from an equi-axed magnesium powder. Therefore, we can conclude that spherical particles are more suitable for the preparation of porous objects by powder metallurgy.

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