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Novel corrosion-resistant zirconium-based alloy and preparation method thereof

A zirconium-based alloy and corrosion-resistant technology, which is applied in the field of new corrosion-resistant zirconium-based alloy and its preparation, can solve the problems of inability to adjust the performance characteristics of elements, restricting the application of alloys, and being highly toxic to the human body.

Inactive Publication Date: 2019-08-23
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing alloy components that precipitate a single dendritic phase in Zr-based amorphous alloys all contain Be elements. As we all know, Be and its alloys are highly toxic to the human body. During the mass production of Zr alloys, it is easy to produce huge In addition, the addition of Be elements will greatly limit the application of alloys in biomedical and other fields; in addition, in the existing Zr-based amorphous composite materials with endogenous dendrite phase, the components are highly sensitive, so the components are extremely sensitive. Single non-adjustable, cannot adjust the element content to change its performance characteristics

Method used

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  • Novel corrosion-resistant zirconium-based alloy and preparation method thereof
  • Novel corrosion-resistant zirconium-based alloy and preparation method thereof
  • Novel corrosion-resistant zirconium-based alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Press Zr 60 Cu 21 al 10 Fe 5 Nb 4 Component ratio Weigh pure zirconium, pure copper, pure aluminum, pure iron, pure niobium with a purity of 99.9%, put the raw materials into the electric arc melting furnace after weighing;

[0033] (2) Vacuumize the arc melting furnace to 5×10 -3 After the Pa is filled with argon, under the protective atmosphere, the raw materials prepared in step (1) except pure aluminum are heated to 2500 °C for 15 minutes in an electric arc melting furnace. After the melting is completed, the alloy ingot is turned over with a manipulator in the furnace, Repeat the melting 6 times to ensure that the components are evenly distributed;

[0034] (3) Mix the alloy ingot smelted in step (2) with pure aluminum and heat it to 1400°C for 15 minutes in an electric arc melting furnace. A good master alloy is broken and ultrasonically cleaned with distilled water and alcohol;

[0035] (4) The sample dried in (3) is packed into a quartz tube, and plac...

Embodiment 2

[0038] Other steps are with embodiment 1, difference is by Zr 60 Cu 17 al 10 Fe 5 Nb 8 Component ratio: Weigh pure zirconium, pure copper, pure aluminum, pure iron, and pure niobium with a purity of 99.9%.

Embodiment 3

[0040] Other steps are with embodiment 1, difference is by Zr 60 Cu 13 al 10 Fe 5 Nb 12 Component ratio: Weigh pure zirconium, pure copper, pure aluminum, pure iron, and pure niobium with a purity of 99.9%.

[0041] Through the above examples combined with the attached figure 1 , attached figure 2 , attached image 3 , attached Figure 4 And attached Figure 5 It can be seen that sharp crystal peaks have occurred on the XRD spectrum of Example 2, indicating that a crystalline phase has occurred; the exothermic peaks on the DSC curves of Examples 1 and 2 indicate that crystallization exothermic phenomenon has occurred, which proves that the presence of an amorphous phase. Therefore in Zr 60 Cu 25 al 10 Fe 5 Zirconium-based alloys with completely amorphous structure, amorphous composite structure and completely crystalline structure can be prepared by adding different amounts of Nb elements in Zr, and the crystalline phase is dendritic, so the room temperature pla...

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Abstract

The invention relates to a novel corrosion-resistant zirconium-based alloy and a preparation method thereof. The composition of the alloy is Zr60Cu(25-a)Al10Fe5Nba, and the atomic percentage a of theelemental composition is equal to 1-12; and in the preparation process, a rod-shaped bulk alloy with the diameter being 2 mm-4 mm is prepared through vacuum melting and copper die casting technologies, a microstructure of the bulk alloy can have an amorphous phase so as to improve the strength compared with a traditional zirconium alloy, a crystal phase exists to improve the plasticity of the amorphous alloy, and the crystal phase is single so that influences of more uncertain factors on the performance can be avoided. According to the novel corrosion-resistant zirconium-based alloy and the preparation method, the Nb content is added, the corrosion resistance of the alloy is improved, and meanwhile use of the highly toxic Be element in an existing Zr alloy is avoided.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a novel corrosion-resistant zirconium-based alloy and a preparation method thereof. Background technique [0002] Zirconium alloys are widely used in the chemical industry and biomedical materials due to their good corrosion resistance and biocompatibility. In addition, the low neutron absorption coefficient of zirconium atoms also has broad application prospects in the nuclear industry, and its corrosion resistance also needs to be improved. Due to its excellent corrosion resistance, zirconium-based alloys can be widely used in key components in extremely special corrosive environments, such as replacing stainless steel in transmission components, reactors, and pipelines for high-concentration acids, alkalis, salts, and heavily polluted wastewater treatment Valves, etc. In addition, it is also very well used in a large number of construction projects such as coastal s...

Claims

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Application Information

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IPC IPC(8): C22C45/10C22C16/00C22C1/02
CPCC22C45/10C22C16/00C22C1/02C22C1/11
Inventor 夏超群姜英奇李强刘日平杨泰朱德民杨志道
Owner HEBEI UNIV OF TECH
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