A niobium-based bulk amorphous alloy and its preparation method
An amorphous alloy and niobium-based technology, applied in the field of niobium-based amorphous alloy materials, can solve problems such as weak forming ability and limited application fields, and achieve the effects of improving processing technology, expanding applications, and excellent corrosion resistance
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Embodiment 1
[0045] In this embodiment, the molecular formula of the niobium-based bulk amorphous alloy is Nb 42 Ni 39co 18 B 1 .
[0046] The preparation method of the niobium-based bulk amorphous alloy is as follows:
[0047] Use raw materials Nb, Ni, Co, and B with a purity of more than 99.5%, and prepare them in a molar ratio of 42:39:18:1; put the prepared raw materials into an electric arc furnace with an argon atmosphere adsorbed by titanium, and melt for 4 More than one time, to ensure that the composition of the master alloy is uniform, and the master alloy ingot of the Nb-Ni-Co-B quaternary alloy is obtained after cooling; The suction casting device sucks the master alloy melt into the water-cooled copper mold to obtain the composition of Nb 42 Ni 39 co 18 B 1 , a niobium-based bulk amorphous alloy with a diameter of 1 mm, such as figure 1 In (a) shown.
[0048] The X-ray diffraction (XRD) pattern of the niobium-based bulk amorphous alloy is shown in figure 2 In (a) s...
Embodiment 2
[0053] In this embodiment, the molecular formula of the niobium-based bulk amorphous alloy is Nb 42 Ni 38 co 18 B 2 .
[0054] The preparation method of the niobium-based bulk amorphous alloy is as follows:
[0055] Use raw materials Nb, Ni, Co, and B with a purity of more than 99.5%, and prepare them in a molar ratio of 42:38:18:2; put the prepared raw materials into an electric arc furnace with an argon atmosphere adsorbed by titanium, and melt for 4 More than one time, to ensure that the composition of the master alloy is uniform, and the master alloy ingot of the Nb-Ni-Co-B quaternary alloy is obtained after cooling; In the suction casting device, the master alloy melt is sucked into the water-cooled copper mold, and the composition is Nb 42 Ni 38 co 18 B 2 , a niobium-based bulk amorphous alloy with a diameter of 1 mm, such as figure 1 In (b) shown.
[0056] The X-ray diffraction (XRD) pattern of the niobium-based bulk amorphous alloy is shown in figure 2 As s...
Embodiment 3
[0061] In this embodiment, the molecular formula of the niobium-based bulk amorphous alloy is Nb 42 Ni 37 co 18 B 3 .
[0062] The preparation method of the niobium-based bulk amorphous alloy is as follows:
[0063] Use raw materials Nb, Ni, Co, and B with a purity of more than 99.5%, and prepare them in a molar ratio of 42:37:18:3; put the prepared raw materials into an electric arc furnace with an argon atmosphere adsorbed by titanium, and melt for 4 More than one time, to ensure that the composition of the master alloy is uniform, and the master alloy ingot of the Nb-Ni-Co-B quaternary alloy is obtained after cooling; In the suction casting device, the master alloy melt is sucked into the water-cooled copper mold, and the composition is Nb 42 Ni 37 co 18 B 3 , a niobium-based bulk amorphous alloy with a diameter of 1 mm, such as figure 1 In (c) shown.
[0064] The X-ray diffraction (XRD) pattern of the niobium-based bulk amorphous alloy is shown in figure 2 As s...
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