Ti-Al Membranes for Microfiltration

Abstract:

Porous membranes made of Ti – 48 at. % Al intermetallic compound was obtained by elemental powder synthesis. These disks can be used as microfiltration membranes due to their low pores size and interconnected porosity. During this study titanium (purity 99.5%) and aluminum (purity 99 %) with low particle size range were mixed in corresponding ratios. The powder mixture was pressed at 500 MPa and the samples were heat treated in two stages. In the first step is the forming of Al₃Ti compound by a solid state reaction at a temperature of 640 °C, slightly below the melting point of aluminum. In the second step the Ti-Al compound was formed at the temperature of 1300 °C and the sintering the porous structure was accomplished too. The obtained membranes were characterized by X-ray diffraction and scanning electron microscopy (SEM).

• Periodical: Solid State Phenomena (Volume 254)
• Pages: 8-13
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.254.8
• Online since: August 2016
• Authors: Silvia Şuta*, György Thalmaier, Niculina Sechel, Ioan Vida-Simiti, Valentin Petrescu
• Keywords: Elemental Powder Synthesis, Porous Material, Ti-Al Intermetallic

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