Effect of ambient temperature on microstructure and properties of Fe3Al intermetallic compound porous materials
Fe3Al porous metal filter element is especially suitable for precision filtration and gas-solid separation under high-temperature high-pressure and corrosive environment.In order to meet the usage requirements of the filter element,in addition to considering its pore characteristics,its mechanical properties are also crucial.Fe3Al intermetallic compounds porous materials were prepared by powder metallurgy technology in this paper.The effects of ambient temperature on the pore characteristics,,mechanical properties and microstructure of the porous materials were studied by XRD,SEM,pore structure and mechanical properties.It shall provide a reliable basis for the use of Fe3Al porous materials at high temperature.The experimental results show that Fe3Al porous materials have good tensile strength and permeability properties at medium and high temperature.The tensile strength reaches the maximum at 300 ℃ and then decreases with the increase of temperature,and decreases obvi-ously when the temperature is higher than 700 ℃.The fracture belongs to brittle fracture.The order degree of the Fe3Al intermetallic compounds porous materials changes with the increase of temperature.
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