Sandwich structure giant magneto-impedance effect composite material and preparation method
A technology of giant magneto-impedance and composite materials, applied in the field of magnetic sensitive components, can solve the problems such as the inability of the giant magneto-impedance value to be significantly improved and the magnetic flux path to be unable to be well closed, to enhance the GMI effect, suitable for mass production, The effect of increasing sensitivity
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[0028]Example 1
[0029]Step 1: Take iron-based amorphous Fe73.5Cu1Nb3Si13B9.5One strip
[0030]Step 2: Place the iron-based amorphous ribbon of step 1 in a tube furnace, set the vacuum to 1.5pa, heat up to 540°C, pass in 5 sccm of hydrogen, and anneal for 20 minutes to obtain the iron-based nanocrystalline ribbon;
[0031]Step 3: Place the iron-based nanocrystalline strips obtained in step 2 in 0.4M NaOH, 0.5 M Na2CO3And 0.7M Na3PO4·12H2Degreasing and cleaning treatment in the O mixed solution, the treatment time is 10 minutes;
[0032]Step 4: Place the strip obtained in step 3 in a 5M HCl solution for acidification treatment, the treatment time is 20 minutes;
[0033]Step 5: Place the strip obtained in step 4 in 0.3M SnCl2· 2H2Sensitization is carried out in a mixed solution of O and 0.6M HCl, and the treatment time is 20 minutes;
[0034]Step 6: Place the strip obtained in step 5 on 2.5×10-4M PdCl2Activate it in a mixed solution of 0.6M HCl, and the processing time is 20 minutes;
[0035]Step 7: Disp...
Example Embodiment
[0042]Example 2
[0043]Step 1: Take iron-based amorphous Fe73.5Cu1Nb3Si13B9.5One strip
[0044]Step 2: Place the iron-based amorphous ribbon of step 1 in a tube furnace, set the vacuum to 1.9pa, heat up to 540°C, pass in 5 sccm of hydrogen, and anneal for 20 minutes to obtain the iron-based nanocrystalline ribbon;
[0045]Step 3: Place the iron-based nanocrystalline strips obtained in step 2 in 0.4M NaOH, 0.5 M Na2CO3And 0.7M Na3PO4·12H2Degreasing and cleaning treatment in the O mixed solution, the treatment time is 20 minutes;
[0046]Step 4: Place the strip obtained in step 3 in a 5M HCl solution for acidification treatment, the treatment time is 20 minutes;
[0047]Step 5: Place the strip obtained in step 4 in 0.3M SnCl2· 2H2Sensitization is carried out in a mixed solution of O and 0.6M HCl, and the treatment time is 20 minutes;
[0048]Step 6: Place the strip obtained in step 5 on 2.5×10-4M PdCl2Activate it in a mixed solution of 0.6M HCl, and the processing time is 20 minutes;
[0049]Step 7: Disp...
Example Embodiment
[0056]Example 3
[0057]Step 1: Take iron-based amorphous Fe73.5Cu1Nb3Si13B9.5One strip
[0058]Step 2: Place the iron-based amorphous ribbon of step 1 in a tube furnace, set the vacuum to 2pa, heat up to 540°C, pass in 5 sccm of hydrogen, and anneal for 20 minutes to obtain the iron-based nanocrystalline ribbon;
[0059]Step 3: Place the iron-based nanocrystalline strips obtained in step 2 in 0.4M NaOH, 0.5 M Na2CO3And 0.7M Na3PO4·12H2Degreasing and cleaning treatment in the O mixed solution, the treatment time is 10 minutes;
[0060]Step 4: Place the strip obtained in step 3 in a 5M HCl solution for acidification treatment, the treatment time is 20 minutes;
[0061]Step 5: Place the strip obtained in step 4 in 0.3M SnCl2· 2H2Sensitization is carried out in a mixed solution of O and 0.6M HCl, and the treatment time is 10 minutes;
[0062]Step 6: Place the strip obtained in step 5 on 2.5×10-4M PdCl2Activate it in a mixed solution of 0.6M HCl, and the processing time is 20 minutes;
[0063]Step 7: Take a...
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