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A high-strength, toughness, and corrosion-resistant zirconium-cobalt binary alloy and its preparation method

A binary alloy and cobalt alloy technology, applied in the field of zirconium alloy, can solve the problems affecting the shape memory behavior of B2 phase and reduce the martensitic transformation temperature, so as to facilitate research, development and utilization, improve compressive strength and toughness, and facilitate The effect of forging and deformation

Active Publication Date: 2022-05-27
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A high-strength, toughness, and corrosion-resistant zirconium-cobalt binary alloy and its preparation method
  • A high-strength, toughness, and corrosion-resistant zirconium-cobalt binary alloy and its preparation method
  • A high-strength, toughness, and corrosion-resistant zirconium-cobalt binary alloy and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0041] (2) Put the prepared material in the water-cooled copper crucible of the WK-II type non-consumable vacuum arc melting furnace, close the valve to wash the gas, open the side pumping valve and the vacuum gauge, and observe the vacuum gauge. When the reading of the vacuum gauge is less than 10pa, close the side pumping valve and open the flapper 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 arc furnace cavity with high-purity argon with a purity of 99.999% and 0.06MPa as a protective gas before arc smelting, place the upper electrode and the lower electrode in a good position, turn on the power swi...

Embodiment 2

[0047] (1) Take 29.9029g of industrial-grade zirconium sponge with a purity of 99.4% and 0.0971g of cobalt sheet with a purity of 99.995% and soak them in absolute ethanol, respectively. After ultrasonic cleaning, according to Zr 99.5 Co 0.5 The design ratio is batched;

[0048] (2) Put the prepared material in the water-cooled copper crucible of the WK-Ⅱ type non-consumable vacuum arc melting furnace, close the valve to wash the gas, open the side pumping valve and the vacuum gauge, and observe the number of the vacuum gauge. When the reading of the vacuum gauge is less than 10pa, close the side pumping valve and open the flapper 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 arc furnace cavity with high-purity argon with a purity of 99.999% and 0.06MPa as a protective gas before arc smelting, place the upper electrode and the lower electrode in a good position...

Embodiment 3

[0054] (1) Take 29.8055g of industrial-grade zirconium sponge with a purity of 99.4% and 0.1945g of cobalt flakes with a purity of 99.995% in absolute ethanol, respectively. After ultrasonic cleaning, according to Zr 99 Co 1 The design ratio is batched;

[0055] (2) Put the prepared material in the water-cooled copper crucible of the WK-Ⅱ type non-consumable vacuum arc melting furnace, close the valve to wash the gas, open the side pumping valve and the vacuum gauge, and observe the number of the vacuum gauge. When the reading of the vacuum gauge is less than 10pa, close the side pumping valve and open the flapper 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 arc furnace cavity with high-purity argon with a purity of 99.999% and 0.06MPa as a protective gas before arc smelting, place the upper electrode and the lower electrode in a good position, turn on the pow...

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Abstract

The invention is a high-strength, toughness and corrosion-resistant zirconium-cobalt binary alloy. The alloy is a zirconium-cobalt alloy, and the atomic ratios of the two elements are: Zr 98-99.5%, Co 0.5-2%, and impurities are negligible. The hardness of the zirconium-cobalt binary alloy is 273.6-336.3HV, the elastic modulus is 43.76-49.22GPa, the yield strength is 321.1-412.8MPa, and the pitting potential is 0.57-1.42V. The invention solves the deficiencies and some problems faced in the zirconium alloy technology, and the researched alloy has good comprehensive performance and relatively low 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 of zirconium-cobalt alloys. Background technique [0002] High strength and high ductility are one of the basic criteria for engineering material selection. In order to make engineering materials have a high safety factor in the use of various fields, materials with high strength and high ductility are required 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 shortcomings, such as low strength and easy pitting. According to existing research, zirconium alloy has been widely used in many fields of national economy and national defense const...

Claims

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Application Information

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Patent Type & Authority Patents(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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