Abstract
The Sendust alloy sheet (Fe-Al-Si system) is too hard to make thin sheet by rolling. The authors succeeded previously in the manufacturing of Sendust sheets by the powder-rolling. (The Journal of the Japan Society of Powder and Powder Metallurgy. Vol.14, No.1, 1967).
The authors have tried to apply the new process of electric discharge sintering to the production of the Sendust alloy thin sheet and have succeeded. This process does not need both special atmosphere and furnace, and can produce thin sheets with free size and thickness. The sintering time in air is shorter as much as a few minutes.
The characteristics of Sendust sheets produced by electric discharge sintering process were compared with those by powder rolling and vacuum sintering (powder metallurgy) and it has been cleared that the electric discharge sintering process is best.
The optimum operating conditions in this process, such as discharging current, discharging time, and pressing pressure are very important to get the best sheets.
In this report, the optimum operating condition to make the Sendust alloy thin sheet and, the measured characteristics, such as (μm, BHe, Br, B10), electric (ρ), and mechanical (hardness) properties are described.
