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High-toughness corrosion-resistant zirconium-cobalt binary alloy and preparation method thereof

A binary alloy, corrosion-resistant technology, applied in the field of zirconium alloy, can solve the problems of affecting the shape memory behavior of B2 phase, reducing the martensitic transformation temperature, etc. low cost effect

Active Publication Date: 2022-04-12
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies in recent years have shown that Co is an alloying element suitable for low-temperature stability of B2-phase Zr-based alloys. In addition, the addition of a small amount of Co also reduces the martensitic transformation temperature, thereby affecting the shape memory behavior of B2 phase.

Method used

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  • High-toughness corrosion-resistant zirconium-cobalt binary alloy and preparation method thereof
  • High-toughness corrosion-resistant zirconium-cobalt binary alloy and preparation method thereof
  • High-toughness corrosion-resistant zirconium-cobalt binary alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) 30 g of industrial-grade zirconium sponge with a purity of 99.4% is immersed in a beaker filled with absolute ethanol and ultrasonically cleaned for 5 minutes, dried after cleaning, and put into a vacuum electric arc furnace for smelting;

[0041] (2) Put the prepared material in the water-cooled copper crucible of the WK-II non-consumable vacuum arc melting furnace, close the valve for air washing, open the side pumping valve and vacuum gauge, and observe the vacuum gauge reading, when it is low When the reading of the vacuum gauge is less than 10pa, close the side pumping valve and open the gate valve. When the reading of the high vacuum gauge is also less than 10pa, turn on the molecular pump and pump the high vacuum to 5×10 -3 Pa;

[0042](3) Fill the electric arc furnace cavity with 0.06MPa high-purity argon gas with a purity of 99.999% as a protective gas before arc smelting, position the upper electrode and the lower electrode, turn on the power switch, and p...

Embodiment 2

[0047] (1) Take 29.9029g of industrial-grade zirconium sponge with a purity of 99.4%, and 0.0971g of cobalt flakes with a purity of 99.995% and soak them in absolute ethanol respectively. 99.5 co 0.5 The design ratio is used for batching;

[0048] (2) Put the prepared material in the water-cooled copper crucible of the WK-II non-consumable vacuum arc melting furnace, close the valve for air washing, open the side pumping valve and vacuum gauge, and observe the vacuum gauge reading, when it is low When the reading of the vacuum gauge is less than 10pa, close the side pumping valve and open the gate valve. When the reading of the high vacuum gauge is also less than 10pa, turn on the molecular pump and pump the high vacuum to 5×10 -3 Pa;

[0049] (3) Fill the electric arc furnace cavity with 0.06MPa high-purity argon gas with a purity of 99.999% as a protective gas before arc smelting, position the upper electrode and the lower electrode, turn on the power switch, and press the...

Embodiment 3

[0054] (1) Take 29.8055g of industrial-grade zirconium sponge with a purity of 99.4%, and 0.1945g of a cobalt sheet with a purity of 99.995% and soak them in absolute ethanol respectively. 99 co 1 The design ratio is used for batching;

[0055] (2) Put the prepared material in the water-cooled copper crucible of the WK-II non-consumable vacuum arc melting furnace, close the valve for air washing, open the side pumping valve and vacuum gauge, and observe the vacuum gauge reading, when it is low When the reading of the vacuum gauge is less than 10pa, close the side pumping valve and open the gate valve. When the reading of the high vacuum gauge is also less than 10pa, turn on the molecular pump and pump the high vacuum to 5×10 -3 Pa;

[0056] (3) Fill the electric arc furnace cavity with 0.06MPa high-purity argon gas with a purity of 99.999% as a protective gas before arc smelting, position the upper electrode and the lower electrode, turn on the power switch, and press the au...

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Abstract

The invention relates to a high-toughness corrosion-resistant zirconium-cobalt binary alloy. The alloy is a zirconium-cobalt alloy, the atomic ratio of Zr is 98-99.5%, the atomic ratio of Co is 0.5-2%, and impurities are negligible. According to the zirconium-cobalt binary alloy, the hardness ranges from 273.6 HV to 336.3 HV, the elasticity modulus ranges from 43.76 GPa to 49.22 GPa, the yield strength ranges from 321.1 MPa to 412.8 MPa, and the pitting potential ranges from 0.57 V to 1.42 V. The zirconium-cobalt binary alloy has the beneficial effects that the hardness ranges from 273.6 HV to 336.3 HV; according to the method, the defects and some problems in the zirconium alloy technology are overcome, and the researched alloy has good comprehensive performance and is relatively low in cost.

Description

technical field [0001] The invention belongs to the field of zirconium alloys, in particular to a high-strength and high-toughness zirconium-cobalt binary alloy and a preparation method thereof, which can be widely used in experimental research on zirconium-cobalt series alloys. Background technique [0002] Having high strength and high ductility is one of the basic criteria for engineering material selection. In order to make engineering materials have a higher safety factor in the use of various fields, the materials are required to have higher strength and higher ductility when selecting materials. [0003] Zirconium alloys have many advantages, such as: low thermal expansion coefficient and thermal neutron absorption cross-sectional area, good machinability, biocompatibility and stable size effect. But it also has disadvantages, such as low strength and easy pitting. According to the existing research, zirconium alloys have been widely used in many fields of national ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C16/00C22C1/02C22F1/18
Inventor 夏超群刘毅伟李强杨泰宋天朔刘芊莹张一凡李夏瑾
Owner HEBEI UNIV OF TECH
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