Preparation method of thorium-containing iridium alloy
A technology of alloy and hydrogen, which is applied in the field of preparation of thorium-iridium alloys, can solve the problems of complex preparation process and difficulty in controlling the uniformity of trace elements, and achieve the effects of simplifying the preparation process, improving plasticity and reducing losses
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[0022] The iridium alloy of this embodiment is composed of the following components by mass percentage: W3400ppm, Th68ppm, the balance being Ir and unavoidable impurities.
[0023] The preparation of the iridium alloy of the present embodiment may further comprise the steps:
[0024] Step (1), taking by weighing 35g of iridium powder with a purity of 99.95%, transferring to a mold and placing it in a cold isostatic press for pressing, the pressing force is 80MPa;
[0025] Step (2), transfer the pressed iridium block to a hydrogen furnace for pre-sintering, the working parameters are: sintering temperature 1000°C, sintering time 1h, sintering atmosphere is hydrogen:
[0026] The sintered iridium block is transferred to a vacuum high-temperature sintering furnace for sintering. The working parameters are: sintering temperature 1500°C, sintering time 4h, vacuum degree less than 1.0×10 -2 Pa.
[0027] In step (3), the iridium block is transferred to a vacuum arc melting furnace,...
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