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Anti-corrosion block rare earth-based metal glass and annealing method thereof

A base metal and corrosion-resistant technology, applied in the field of preparation of amorphous alloy materials, can solve problems such as weak resistance to crystallization, and achieve the effects of strong amorphous forming ability, increased corrosion resistance, and simple annealing process.

Inactive Publication Date: 2015-05-20
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of weak resistance to crystallization of existing metallic glasses; the present invention provides a bulk rare earth-based metal glass with good resistance to crystallization and corrosion resistance

Method used

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  • Anti-corrosion block rare earth-based metal glass and annealing method thereof
  • Anti-corrosion block rare earth-based metal glass and annealing method thereof
  • Anti-corrosion block rare earth-based metal glass and annealing method thereof

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Effect test

Embodiment 1

[0040] According to the atomic percentage of 29.31% cerium, 21.83 lanthanum, 3.53 praseodymium, 7.08% samarium, 3.25% gadolinium, 25% cobalt and 10% aluminum (purity ≥ 99.5%, mass ratio), a total of 50g was weighed. Put the metal raw material in a copper mold cooled by circulating water, pass in 0.6MPa argon gas under vacuum conditions, and adjust the distance between the tungsten electrode and the metal raw material to be 1cm under the voltage of 380v; turn on the power, and start arcing the material ; Repeated melting 3 times to ensure that the alloy components are mixed evenly. Turn off the power, open the suction casting valve at the same time, control the pressure difference at 0.4MPa and start the suction casting to obtain a corrosion-resistant rare earth-based bulk metallic glass sample.

Embodiment 2

[0042] Put the corrosion-resistant rare earth-based metal glass sample prepared in Example 1 into a low-temperature atmosphere tube furnace (argon protection condition), keep it warm at 100°C for 1 hour, quickly take out the sample and put it into a beaker filled with water at 0°C middle. After the amorphous alloy sample is cooled, the corrosion-resistant rare earth-based bulk metallic glass is obtained. After detection, the alloy after annealing treatment is still completely amorphous.

Embodiment 3

[0044] Put the corrosion-resistant rare earth-based metal glass sample prepared in Example 1 into a low-temperature atmosphere tube furnace (argon protection condition), heat it at 100°C for 4 hours, quickly take out the sample and put it into a beaker filled with water at 0°C middle. After the amorphous alloy sample is cooled, the corrosion-resistant rare earth-based bulk metallic glass is obtained. After detection, the alloy after annealing treatment is still completely amorphous.

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Abstract

The invention relates to anti-corrosion block rare earth-based metal glass and an annealing method thereof, belonging to the technical field of preparation of amorphous alloy materials. Specific to the problem of poor crystallization resistance of the existing metal glass, the invention provides an anti-corrosion block rare earth-based metal glass with good crystallization resistance; and the composition is CexLayPrzSmsGdtComAln, wherein x, y, z, s, t, m and n represent the atom percentage content; x is 29.31%, y is 21.83%, z is 3.53%, s is 7.08%, t is 3.25%, m is 25% and n is 10%. The anti-corrosion block rare earth-based metal glass provided by the invention is a single amorphous phase and has strong amorphous forming ability; the anti-corrosion block rare earth-based metal glass after annealing treatment is still in an amorphous state; the corrosion resistance is obviously enhanced by 49.5%; and the hardness is remarkably improved.

Description

technical field [0001] The invention relates to a corrosion-resistant bulk rare earth-based metal glass and an annealing method thereof, belonging to the technical field of preparation of amorphous alloy materials. Background technique [0002] Amorphous alloy refers to a metal or alloy with an amorphous structure similar to glass. It has the metastable structural characteristics of short-range order and long-range disorder. It is a new type of metal material. Different from traditional metal materials, its internal atomic arrangement presents a disordered state similar to glass, so it is also called metallic glass. Amorphous alloys have no dislocations, no phase boundaries, and are therefore solids without crystal defects. Amorphous alloys have high strength, high toughness, good wear resistance, corrosion resistance, and ideal magnetic properties, and have attracted widespread attention in the material industry. [0003] Bulk rare-earth-based metallic glasses not only ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/00C22F1/16
Inventor 王艳郑州张伟固有地
Owner UNIV OF JINAN
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