The Impact of Composition and Sintering Temperature for Stainless Steel Foams (SS316L) Fabricated by Space Holder Method with Urea as Space Holder
Autor: | Musfirah Ramli, Zulaikha Abdullah, Sufizar Ahmad |
---|---|
Rok vydání: | 2017 |
Předmět: |
Materials science
Scanning electron microscope 020502 materials Mechanical Engineering Metallurgy Sintering Green body 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 0205 materials engineering Mechanics of Materials Powder metallurgy Phase (matter) Particle General Materials Science Tube furnace Composite material 0210 nano-technology Porosity |
Zdroj: | Materials Science Forum. 888:413-417 |
ISSN: | 1662-9752 |
Popis: | Metal foams are a cellular structure that has a solid matrix made of metal and has pores in their structure. Metal foams offer excellent combination of properties which led researchers interested in investigation in recent years. Closed-cell stainless steel (SS316L) foams for biomedical application were prepared by space holder method and the physical and morphological properties of SS316L foams were studied. Stainless steel (SS316L) powders as metallic material, polyethylene glycol (PEG) as a binder and Urea as a space holder material were mixed homogenously to avoid the particle wrecked. This mixture was compacted using uniaxial pressing machine and pressurized to 8 tons to formed the green body. By using tube furnace, the SS316L foams was two-stage sintered, the first phase at 600°C for 2 hours to decompose the urea, and the second phase at 1000°C, 1100°C, and 1200°C respectively to sinter the steel. The porosity and density test was carried out by applying Archimedean principles, while morphological observation was done by using Field Emission Scanning Electron (FESEM). The samples with 40wt.% SS316L composition and sintered at temperature of 1100°C, leads to porosities of about 44.539% and show the potential as the best metal foams. |
Databáze: | OpenAIRE |
Externí odkaz: |