A kind of gadolinium block material and preparation method thereof
A technology of bulk material and gadolinium block, which is applied in the field of gadolinium bulk material and its preparation, can solve the problems of difficult preparation and difficult to prepare nanoparticles, etc., and achieves the effects of easy availability of raw materials, simple preparation process and convenient operation.
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Embodiment 1
[0030] Preparation method of Gd block material 1:
[0031] (1) 4 grams of metal gadolinium powder raw materials and 120 grams of stainless steel metal grinding balls (ball-to-material ratio is 30:1) are put into a 250ml stainless steel grinding jar together, and the argon (Ar) that fills into 1 bar is protected; Then put The ball milling tank with the raw material sample installed, that is, the above grinding tank is placed on a ball mill for ball milling, the ball milling conditions: the ball milling speed is 400rpm, and the ball milling time is 40 hours;
[0032] (2) In a pretreatment chamber (oxygen concentration of 0.4ppm) protected by high-purity argon (purity above 99.99%), put the ground gadolinium powder into a WC cemented carbide mold, and then pre-press it under a pressure of 2Mpa ;
[0033] (3) Put the mold containing gadolinium powder into spark plasma sintering (SPS for short) equipment (model SPS-5.40-IV / ET) to sinter it into metal gadolinium bulk material. The...
Embodiment 2
[0043] Preparation method of Gd block material 2:
[0044] (1) 4 grams of metal gadolinium powder raw materials and 200 grams of stainless steel metal grinding balls (ball-to-material ratio is 50:1) are put into a 250ml stainless steel grinding jar together, and the argon (Ar) that fills into 3bar is protected; Then put The ball milling tank with the raw material sample installed, that is, the above grinding tank is placed on a ball mill for ball milling, the ball milling conditions: the ball milling speed is 500rpm, and the ball milling time is 60 hours;
[0045] (2) In the pretreatment chamber (oxygen concentration is 0.3ppm) protected by high-purity argon gas (purity reaches more than 99.99%), put the ground gadolinium powder into the WC cemented carbide mold, and then pre-press it under 2Mpa pressure ;
[0046] (3) Put the mold containing gadolinium powder into spark plasma sintering (SPS for short) equipment (model SPS-5.40-IV / ET) to sinter it into metal gadolinium bulk ...
Embodiment 3
[0052] Preparation method of Gd block material 3:
[0053] (1) 4 grams of metal gadolinium powder raw materials and 240 grams of stainless steel metal grinding balls (the ball-to-material ratio is 60:1) are put into a 250ml stainless steel grinding jar together, and the argon (Ar) that fills into 3bar is protected; Then put The ball milling tank with the raw material sample installed, that is, the above grinding tank is placed on a ball mill for ball milling, the ball milling conditions: the ball milling speed is 300rpm, and the ball milling time is 20 hours;
[0054] (2) In the pretreatment chamber (oxygen concentration is 0.3ppm) protected by high-purity argon gas (purity reaches more than 99.99%), put the ground gadolinium powder into the WC cemented carbide mold, and then pre-press it under 2Mpa pressure ;
[0055] (3) Put the mold containing gadolinium powder into spark plasma sintering (SPS for short) equipment (model SPS-5.40-IV / ET) to sinter it into metal gadolinium b...
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