Preparation method of low-melting-point metal alloy
A low-melting-point metal and high-melting-point metal technology is applied in the field of preparation of low-melting-point metal alloys, which can solve the problems of preparation technology and production safety defects, segregation of alloy product components, affecting product quality, etc., and achieves easy industrialization and promotion. The effect of less energy consumption and avoidance of alloy composition segregation
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Embodiment 1
[0022] The La 0.8 Ni 3 The alloy was prepared as a thin ribbon with a thickness of 100 μm. 98.33gLa 0.8 Ni 3 Alloy and 1.67gMg are loaded into a closed container, wherein the raw material particle size of Mg is about 100μm, and make Mg and La 0.8 Ni 3 Alloy isolation to ensure that Mg can only interact with La in gaseous form 0.8 Ni 3 alloy contacts. Place the airtight container in a heat treatment furnace for heat treatment at 1000°C for 4h.
[0023] After the prepared alloy was cooled, it was taken out, crushed and ground into particles with a particle size of 200 mesh under the air atmosphere, and X-ray diffraction test was carried out. The test results were as follows: figure 1 shown. It can be seen from the diffraction results that after being processed by the preparation method of the present invention, the phase structure of the alloy has undergone significant changes, indicating that Mg has entered into La during the heat treatment process. 0.8 Ni 3 Inside t...
Embodiment 2
[0025] The Nd 0.8 Ni 3 The alloy was prepared as thin strips with a thickness of 1500 μm. 97.56gLa 0.8 Ni 3 Alloy and 2.44gMg are packed into a closed container, wherein the raw material particle size of Mg is about 3cm, and make Mg and Nd 0.8 Ni 3 Alloy isolation to ensure that Mg can only interact with Nd in gaseous form 0.8 Ni 3 alloy contacts. Place the airtight container in a heat treatment furnace for heat treatment at 1100°C for 60h. In the same airtight container, repeat the above preparation process 10 times without cleaning the inner wall of the container.
[0026] The prepared 10 samples were respectively subjected to inductively coupled plasma emission spectrometry (ICP) to detect the content of Mg element in the alloy, and the detection results are listed in figure 2 middle. From the results of Mg content detection, it can be seen that the percentage of Mg element in the alloy in the first preparation process is only 1.44wt.%, which is far from the targ...
Embodiment 3
[0028] The Fe 0.2 Ni 2.3 The alloy was prepared as a thin ribbon with a thickness of 300 μm. 97.66gLa 0.8 Ni 3 Alloy and 2.34gLi are loaded into a closed container, wherein the raw material particle size of Li is about 500μm, and make Li and Fe 0.2 Ni 2.3 Alloy isolation ensures that Li can only interact with Fe in gaseous form 0.2 Ni 2.3 alloy contacts. Place the airtight container in a heat treatment furnace for heat treatment at 850 °C for 1 h. In the same airtight container, repeat the above preparation process 10 times without cleaning the inner wall of the container. Due to the active chemical properties of the Li element, an inert gas protection is required during the process of loading into a closed container.
[0029] The prepared 10 samples were respectively subjected to inductively coupled plasma emission spectrometry (ICP) to detect the content of Li element in the alloy, and the detection results are listed in image 3middle. It can be seen from the det...
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