Manufacturing method of mnal alloy
A manufacturing method and alloy technology, applied in the direction of electrolytic components, electrolytic process, etc., to achieve the effect of reducing uneven composition and high magnetic properties
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[0055]
[0056] First, prepare to have figure 1 The electrodeposition setup of the structure shown. The cathode 5 used a Cu plate with a thickness of 3 mm cut so that the area immersed in the molten salt 3 was 5 cm×8 cm, and the anode 6 used an Al plate with a thickness 3 mm cut so that the area immersed in the molten salt 3 was 5 cm×8 cm.
[0057] Next, the anhydrous AlCl as the Al compound 3 and NaCl as other halides were weighed 50mol% respectively, and 0.1mass% of pre-dehydrated MnCl was weighed as a Mn compound 2 , was thrown into the alumina crucible 2 so that the total weight became 1200 g. Therefore, MnCl 2 The amount is 1.2g. Dehydration treatment by MnCl 2 Hydrate in N 2 It is performed by heating at about 400° C. for 4 hours or more in an inert atmosphere such as gas.
[0058] The alumina crucible 2 loaded with the material was moved to the inside of the airtight container 1 , and the material was heated at 350° C. in the electric furnace 4 to obtain the mo...
Embodiment 1～5
[0064] In addition to adding MnCl as a Mn compound in the electrolysis 2 Except that, the samples of Examples 1-5 were produced similarly to Comparative Examples 6-10, respectively.
[0065] MnCl 2 The additional input of is carried out as follows. First, the MnCl 2 Hydrate in N 2 In an inert atmosphere such as gas, dehydration treatment is carried out at about 400°C for more than 4 hours, and the obtained anhydrous MnCl 2 Crush using a mortar under an inert atmosphere. The obtained powder was molded into cylindrical pellets with a diameter of 5 mm to produce anhydrous MnCl 2 particle. The pellets thus obtained are additionally charged into the molten salt 3 during electrolysis. The additional injection of pellets was performed every 10 minutes, and the amount of injection per one time was all 0.38 g in Examples 1-5.
[0066] like figure 2 As shown, the samples of Examples 1 to 5 exhibited ferromagnetism, and had higher remanence magnetization than the corresponding ...
Embodiment 6～10
[0071] In addition to adding MnCl as a Mn compound in the electrolysis 2 Except that, the samples of Examples 6-10 were produced similarly to Comparative Examples 11-15, respectively. The particles used and the feeding conditions were the same as in Examples 1-5, respectively.
[0072] like figure 2 As shown, the samples of Examples 6 to 10 also exhibited ferromagnetism, and their remanence magnetization was larger than those of Comparative Examples 11 to 15, respectively. In addition, in any of Examples 6 to 10, the form of the MnAl alloy precipitated on the cathode 5 was not in the form of a film, but mostly in the form of powder. In addition, in the samples of Examples 6 to 10, the evaluations of density unevenness were all ◯.
[0073] In this manner, in Examples 6 to 10, both the ferromagnetic film-like electrodeposit and the powdery electrodeposit were obtained. The remanent magnetization of the obtained ferromagnetic electrodeposit increases up to an initial concent...
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