Continuous metallic glass fiber and preparing method thereof

Abstract

The invention provides a continuous metallic glass fiber and a preparing method thereof. The alloy component of the metallic glass fiber is one of palladium base, platinum base, gold base, calcium base, magnesium base, copper base, aluminum base, titanium base, iron base, cobalt base, nickel base, zirconium base, hafnium base, yttrium base and lanthanide series rare earth base, the diameter of the cross section of the fiber is 2 to 50 mu m, the length thereof is more than 100m, and the volume content of amorphous phase thereof is not less than 90 percent. Super-cooled metallic glass alloy melt is drawn into the metallic glass fiber of a certain diameter at a tremendous speed through a porous wire-drawing bushing. The metallic glass fiber has excellent comprehensive mechanical property. The continuous metallic glass fiber can be made into primary products such as rope, cloth, net, felt, short-cut yarn, and the like, in the application mode which is similar to that of oxide glass fiber; or on the basis, the fiber can be used as fiber reinforcing material to be combined with resin, ceramics, metal, cement, plaster, asphalt, and the like, thus producing various composite materials with rich and changeful performances.

Description

technical field [0001] The invention relates to the fields of amorphous alloy (metallic glass) and glass fiber manufacturing technology, and in particular to a new type of continuous metal glass fiber that can be used as a composite material reinforcement and a preparation method thereof. Background technique [0002] Metallic glass is a new material developed since the 1960s. It refers to an amorphous alloy in which the nucleation and growth of the crystalline phase of certain alloy melts whose main constituent elements are metals are completely inhibited under supercooling at a certain cooling rate, and continue to cool to room temperature and retain a liquid structure. Like ordinary amorphous oxide glass, metallic glass also undergoes glass transition at a certain temperature when the temperature is continuously raised (this temperature is called T g ), the viscosity decreases sharply and enters a supercooled liquid state with very high plastic rheology. These essential...

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Problems solved by technology

So far, no bulk metallic glass alloy can exhibit 1% tensile plastic deformation

[0021] (2) Even though the alloys of many systems that have been discovered can obtain amorphous rods with a diameter of more than one centimeter by copper mold casting, the bulk metallic glass with this forming ability is far from being able to manufacture architectural structures. components (such as bridge components, etc.)

[0022] (3) Even if the bulk metallic glass discovered in the future can be made larger than imagined now, since its fracture is generally controlled by "defects", as long as a slightly larger defect appears in the entire sample and causes local stress concentration , the entire material is likely to fracture at a certain lower stress

However, compared with the production process of oxide glass fibers, the production process costs of the above-mentioned metal fibers are relatively high, and the obtained metal fibers are discontinuous and have uneven diameters. It is conducive to the subsequent large-scale reproduction through the existing technology of the textile industry, which seriously limits its wide industrial application

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