Magnesium diffusion preparation method for magnesium diboride superconducting wire rod based on MgB<4> precursor powder
A technology of magnesium diboride and superconducting wire, which is applied in the usage of superconductor elements, cable/conductor manufacturing, superconductive devices, etc. High density, high density, and the effect of increasing the filling rate of superconducting phase
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Embodiment 1
[0030] Step 1. According to MgB 2 MgB in wire preparation process 4 Magnesium, boron and carbon molar ratios required for powder generation Weigh magnesium powder, amorphous boron powder and nano-carbon powder into a ball mill and mix them, and then mix them according to MgB 2 MgB in wire preparation process 4 The mass ratio of raw materials and grinding balls required for powder generation is put into the grinding balls, and finally the ball mill tank containing the raw materials and grinding balls is sealed and fixed to the planetary ball mill, according to MgB 2 MgB in wire preparation process 4 The ball milling rate and ball milling time required for powder generation are used for ball milling the raw material mixed powder, and after the ball milling, the grinding balls are screened out to obtain the raw material mixed powder after ball milling;
[0031] The purity of magnesium powder is 95%, the particle size is 5μm, the purity of amorphous boron powder is 95%, the par...
Embodiment 2
[0045] Step 1. According to MgB 2 MgB in wire preparation process 4 Magnesium, boron and carbon molar ratios required for powder generation Weigh magnesium powder, amorphous boron powder and nano-carbon powder into a ball mill and mix them, and then mix them according to MgB 2 MgB in wire preparation process 4 The mass ratio of raw materials and grinding balls required for powder generation is put into the grinding balls, and finally the ball mill tank containing the raw materials and grinding balls is sealed and fixed to the planetary ball mill, according to MgB 2 MgB in wire preparation process 4 The ball milling rate and ball milling time required for powder generation are used for ball milling the raw material mixed powder, and after the ball milling, the grinding balls are screened out to obtain the raw material mixed powder after ball milling;
[0046] The purity of magnesium powder is 99%, the particle size is 10μm, the purity of amorphous boron powder is 98.5%, the ...
Embodiment 3
[0060] Step 1. According to MgB 2 MgB in wire preparation process 4 Magnesium, boron and carbon molar ratios required for powder generation Weigh magnesium powder, amorphous boron powder and nano-carbon powder into a ball mill and mix them, and then mix them according to MgB 2 MgB in wire preparation process 4 The mass ratio of raw materials and grinding balls required for powder generation is put into the grinding balls, and finally the ball mill tank containing the raw materials and grinding balls is sealed and fixed to the planetary ball mill, according to MgB 2 MgB in wire preparation process 4 The ball milling rate and ball milling time required for powder generation are used for ball milling the raw material mixed powder, and after the ball milling, the grinding balls are screened out to obtain the raw material mixed powder after ball milling;
[0061] The purity of magnesium powder is 99.8%, the particle size is 20μm, the purity of amorphous boron powder is 98.5%, th...
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