Method for preparing bulk amorphous alloy under non-vacuum condition and equipment

A non-vacuum, amorphous technology, applied in the field of bulk amorphous alloy preparation, can solve problems such as unfavorable large-scale production and popularization and application of bulk amorphous alloys, cost and operation constraints, and achieves easy control of process conditions and convenient operation. , The effect of preparation equipment is simple

Inactive Publication Date: 2009-11-18
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

Its disadvantage is that vacuuming operation is required during the smelting process, and vacuum conditions will cause many

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  • Method for preparing bulk amorphous alloy under non-vacuum condition and equipment
  • Method for preparing bulk amorphous alloy under non-vacuum condition and equipment

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Embodiment Construction

[0019] Smelting example

[0020] Four high-purity pure metals are selected, namely Zr (99.99wt%), Ni (99.99wt%), Al (99.99wt%), Cu (99.99wt%). According to the ratio of Zr55, Ni5, Al10 and Cu30 in atomic percentage, the master alloy is prepared by arc melting under the protection of argon with a purity of 99.8%. In order to ensure the uniformity of each component in the master alloy, the master alloy is remelted three times to make button material. Grind and polish the surface of the button material to remove the scale on the surface, and then clean the surface with alcohol. Use attached figure 1 The device shown, according to the working principle as mentioned above, can produce an amorphous rod with a diameter of 5 mm. Utilize X-ray diffractometer inspection, this amorphous rod diffraction spectrum is as attached figure 2As shown, there is only one diffuse amorphous diffusion peak on the curve, and there is no obvious diffraction peak corresponding to the crystalline ph...

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Abstract

The invention provides a method for preparing bulk amorphous alloy under the non-vacuum condition and equipment. The equipment are characterized by consisting of an upper furnace chamber (10) and a lower furnace chamber (3), wherein, the upper furnace chamber is a tube type resistance furnace, a heating element (8) is a silicon carbon tube, and the highest heating temperature is 1500 DEG C; a furnace tube (9) is made of corundum material, a crucible (16) is arranged inside a constant temperature area of the furnace tube, is made of high purity graphite materials, and has the outside dimension of 20-40mm and the height of 300-500mm; a round orifice with the diameter of 5-10mm is arranged at the lower part of the crucible and is plugged up by a graphite plug (14) when smelting alloy; a graphite sleeve (17) passes through the upper and the lower furnace chambers; during suction casting, an elevating gear (2) is started, a water-cooling copper mold rises, is connected with the graphite sleeve (17) and rises together with the graphite sleeve to open the graphite plug (14); meanwhile, a capacity pump is started, the suction casting operation is completed, amorphous master alloy is absorbed into the copper mold, and the bulk amorphous alloy is prepared through rapid cooling by utilizing the strong capacity of heat transmission of the copper mold. The method has the advantage that molten slag smelting technology is integrated with the copper mold suction casting method, thus realizing preparation of the bulk amorphous alloy under the non-vacuum condition.

Description

technical field [0001] The invention relates to the preparation of a bulk amorphous alloy, which adopts the covering slag technology to realize the preparation of the bulk amorphous alloy under non-vacuum conditions. The invention belongs to the technical field of metallurgy, material forming and preparation. Background technique [0002] Amorphous alloys refer to metal alloys whose internal atomic structure is disordered in the long range and ordered in the short range. Amorphous alloys have much higher mechanical strength, corrosion resistance, magnetic properties and superplasticity at a certain temperature than ordinary crystalline metal materials. It is precisely because of their excellent characteristics that amorphous alloys have extremely broad application prospects. With the continuous development of the bulk amorphous alloy system and the improvement of the preparation process, it has become a structural and functional material with broad application prospects in ...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C45/00C22C45/10
Inventor 薛庆国曹立军王静松黄书友王精华
Owner UNIV OF SCI & TECH BEIJING
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