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Corrosion-resistant Pb-Li-Zr lead-lithium alloy with high-temperature thermostability

A stable and corrosion-resistant technology, applied in the field of alloys, can solve the problems of complex smelting and pouring equipment and processes, pollution of the environment by toxic gases, and damage to the performance of alloys, so as to improve the operating life of the system, ensure safe operation, and overcome problems in specific gravity differences. Effect

Inactive Publication Date: 2018-07-06
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods have their unavoidable defects, such as easy to produce toxic gas to pollute the environment and cause flux inclusions to damage the properties of the alloy
In addition, the smelting and pouring equipment and processes are complicated, which increases the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A corrosion-resistant Pb-Li-Zr lead-lithium alloy with high temperature thermal stability smelted at 350 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.6wt.%, Zr: 0.3wt.%, Sm: 0.2wt.%, In: 0.4wt.%, Ni: 0.4wt.%, Sn: 0.4wt .%, and the balance is lead. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heat to 350 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy liquid in After standing at 350°C for 10 minutes, it is cast into the equipment at the same level as the hot top for semi-continuous casting into the required square and round ingots. The ingot moves down at a speed of 12m / min. The ingot is deformed at room temperature, and the amount of rolling in each pass is 10%; every 3 passes of rolling requires an intermediate heat treatme...

Embodiment 2

[0022]A corrosion-resistant Pb-Li-Zr lead-lithium alloy with high temperature thermal stability smelted at 370 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 2.0wt.%, Zr: 0.2wt.%, Sm: 0.2wt.%, In: 0.3wt.%, Ni: 0.4wt.%, Sn: 0.4wt .%, and the balance is lead. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heat to 370 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy liquid in After standing at 370°C for 10 minutes, it is cast into the equipment at the same level as the hot top for semi-continuous casting into the required square and round ingots. The ingot moves down at a speed of 10m / min. The ingot is deformed at room temperature, and the amount of rolling in each pass is 12%; every 3 passes of rolling requires an intermediate heat treatmen...

Embodiment 3

[0025] A corrosion-resistant Pb-Li-Zr lead-lithium alloy with high temperature thermal stability smelted at 390 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.5wt.%, Zr: 0.2wt.%, Sm: 0.2wt.%, In: 0.4wt.%, Ni: 0.4wt.%, Sn: 0.3wt .%, and the balance is lead. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heat to 390 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy liquid in After standing at 390 degrees for 10 minutes, it is cast into the equipment at the same level as the hot top for semi-continuous casting into the required square and round ingots. The ingot moves down at a speed of 12m / min. The ingot is deformed at room temperature, and the amount of rolling in each pass is 14%; every 3 passes of rolling need to be subjected to an inte...

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Abstract

The invention discloses a corrosion-resistant Pb-Li-Zr lead-lithium alloy with high-temperature thermostability and a processing technology thereof. The alloy comprises the ingredients of, by weight,1.2-2.5% of Li, 0.2-0.4% of Zr, 0.2-0.3% of Sm, 0.3-0.5% of In, 0.4-0.5% of Ni, 0.2-0.5% of Sn, and the balance lead. The lead-lithium alloy has the high-temperature thermostability which is not possessed by a lead alloy used for a traditional shielding material and has the high corrosion resistance; and the lead-lithium alloy is used for the fields such as nuclear pile, medical radioactive sourceshielding and nuclear waste disposal in the tropical environment, safe running of a nuclear reactor system can be effectively ensured, and the running life of the system is prolonged.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a lead-lithium alloy. Background technique [0002] In the 21st century when energy is increasingly scarce, nuclear power will become the most important clean, efficient and reliable energy source. During the operation of a nuclear reactor, the core will produce radiation. Among them, gamma rays and neutrons have strong penetrating power, which can cause radiation damage to surrounding objects and personnel. Therefore, effective shielding of gamma rays and neutrons is a necessary requirement for improving the safety and reliability of nuclear reactors, and is of great significance in both national defense and civilian fields. [0003] The use of nuclear energy shows the comprehensive strength of a country and marks the country's national defense strength and national economic level. In order to ensure the safe operation of the nuclear reactor system and improve the operating li...

Claims

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Application Information

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IPC IPC(8): C22C11/02C22C1/02C22F1/12C22F1/02G21F1/08
CPCC22C11/02C22C1/02C22F1/02C22F1/12G21F1/085
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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