A kind of nickel-iron-based nitrogen-containing alloy magnetostrictive material and preparation method thereof
A technology of magnetostrictive material and nickel-iron alloy, which is applied in the direction of material selection for magnetostrictive devices, metal material coating process, device material selection, etc., which can solve the problem that pure alloy materials are easily oxidized and corroded, which affects device performance. and other problems, to achieve the effect of good corrosion resistance, simple preparation process and high resistivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] Embodiment 1: Preparation of nickel-iron-based nitrogen-containing alloy magnetostrictive material
[0029] (1) First, according to the molar ratio of nickel: iron of 1:2, weigh nickel nitrate and iron nitrate, put the weighed samples into a beaker, add distilled water, stir magnetically at 60°C to dissolve completely, and then add lemon Acid and ethylene glycol, then add ammonia water dropwise to adjust the PH value to make PH = 7; then mechanically stir in a water bath at 80°C until the sample becomes a gel, put the sample into an oven to fume at 200°C, take out the sample and put it in a muffle In the furnace at 800 ° C, sintering at high temperature for 4 hours, the nickel iron oxide (NiFO) with good crystallization state was obtained.
[0030] (2) the prepared nickel iron oxide in H 2 / N 2 (4%N 2 +96%H 2 ,500sccm) atmosphere, and reduced at 800°C for 4h to obtain a single-phase nickel-iron alloy (NiFe).
[0031] (3) Divide the prepared nickel-iron alloy into 8...
Embodiment 2
[0032] Example 2: Verification of nickel-iron-based nitrogen-containing alloy magnetostrictive material
[0033] 1. Verify the purity of the intermediate products nickel-iron oxide and nickel-iron alloy
[0034] With X-ray diffractometer (XRD; DX-2000SSC) the nickel iron oxide (NiFe 2 o 4 ) and H2 / N 2 The nickel-iron alloy (NF) obtained after mixed atmosphere reduction, the corresponding X-ray diffraction pattern, see figure 1 .
[0035] Depend on figure 1 The position and relative intensity of each diffraction peak in the standard PDF card (NiFe 2 o 4 (No.74-2081), NiFe 2 (No.38-0419)) compared as known, what the present invention experiment makes is pure nickel-iron-oxygen and nickel-iron alloy.
[0036] 2. Confirm the nickel-iron-based nitrogen-containing alloy magnetostrictive material
[0037] With X-ray diffractometer (XRD; DX-2000SSC) test the nickel-iron alloy that embodiment 1 prepares in NH 3 The sample after medium series temperature annealing obtains the...
Embodiment 3
[0040] Embodiment 3: Corrosion experiment and magnetostrictive coefficient test of nickel-iron-based nitrogen-containing alloy magnetostrictive material
[0041] 1. Corrosion test
[0042] After the nickel-iron alloy (NF) and NFN samples in Example 1 were pressed into discs, they were calcined at 1000° C. for 4 hours under the protection of nitrogen atmosphere, and then the surface and sides of the calcined discs were smoothed with sandpaper, and the corrosion test was carried out.
[0043] Put nickel-iron alloy NF and NFN in 0.1M H 2 SO 4 solution, 0.1M NaOH solution, and 3.5%wt Nacl solution for 24 hours. Scanning electron micrographs (SEM) of NF and NFN samples without any corrosion and NF and NFN samples corroded in acid, alkali, and salt solutions for 24 h are shown in Figure 4. It can be seen from Figure 4 that compared with NF, NFN samples have good corrosion resistance to acids, alkalis, and salts.
[0044] 2. Magnetostriction coefficient test
[0045] The magneto...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More