Surface deliquescence-resistant aluminum-lithium-based ternary alloy powder and preparation method thereof

A ternary alloy, anti-deliquescent technology, used in metal processing equipment, explosives, transportation and packaging, etc., can solve problems such as increased difficulty in use, reduced storage activity and stability, and poor stability, and achieves improved stability. The effect of maintaining activity and stability, preventing deliquescence

Active Publication Date: 2022-08-09
BEIJING INSTITUTE OF TECHNOLOGYGY +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, lithium oxide on the surface of aluminum-lithium alloy powder easily interacts with water molecules in the air, causing deliquescence on the surface of the alloy powder to generate lithium aluminate. As the lithium content increases, The stability of the surface of aluminum-lithium alloy powder becomes poor, resulting in a decrease in storage activity and stability. In order to maintain activity and improve stability, aluminum-lithium alloy powder with a large lithium content needs to be stored in an oxygen-free and anhydrous liquid alkane, which also increases Difficulty

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surface deliquescence-resistant aluminum-lithium-based ternary alloy powder and preparation method thereof
  • Surface deliquescence-resistant aluminum-lithium-based ternary alloy powder and preparation method thereof
  • Surface deliquescence-resistant aluminum-lithium-based ternary alloy powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] Preparation of AlLi3Zn2 ternary alloy powder:

[0128] Use system devices such as figure 1 shown.

[0129] 1. Alloy smelting

[0130] Under the condition of positive argon pressure of 105kPa, the oxygen volume content in the silicon carbide crucible melting furnace is not more than 0.01% by vacuuming and filling with argon gas, the melting temperature is 750 ° C, and 100 kg of aluminum-lithium binary alloy ingot (AlLi20) is melted. Store for later use.

[0131] 2. Alloy melting

[0132] Take the aluminum-lithium binary basic alloy ingot (AlLi20), remove the scale and weigh 6.0kg. According to formula (5) and formula (6), it can be seen that 33.2kg of aluminum and 0.8kg of zinc should be added. 40 kg of raw material were placed in melting furnace 2 . The first time to evacuate to 0.1kPa, fill with argon to 101.3kPa and stir; the second time to evacuate to 10kPa, fill with argon to 101.3kPa and stir, the detection value of oxygen content in the furnace is 0.009%. H...

Embodiment 2

[0144] Preparation of AlLi5Zn4 ternary alloy powder:

[0145] Use system devices such as figure 1 shown.

[0146] 1. Alloy smelting

[0147] Under the condition of argon positive pressure of 103kPa, the oxygen volume content in the silicon carbide crucible melting furnace is not more than 0.01% by vacuuming and filling with argon twice, and the melting temperature is 800 ℃, and the aluminum-lithium binary alloy ingot (AlLi20) is melted. 100kg, ready for storage after preparation.

[0148] 2. Alloy melting

[0149] Take the aluminum-lithium binary basic alloy ingot (AlLi20), remove the oxide scale and weigh 10.0kg. According to formula (5) and formula (6), it can be seen that 28.4kg of aluminum and 1.6kg of zinc should be added. 40 kg of raw material were placed in melting furnace 2 . The first time to evacuate to 0.1kPa, fill with argon to 101.3kPa and stir; the second time to evacuate to 10kPa, fill with argon to 101.3kPa and stir, the detection value of oxygen content ...

Embodiment 3

[0160] Preparation of AlLi8Zn5 ternary alloy powder:

[0161] Use system devices such as figure 1 shown.

[0162] 1. Alloy smelting

[0163] Under the condition of positive argon pressure of 103kPa, the oxygen volume content in the silicon carbide crucible melting furnace is not more than 0.01% by vacuuming and filling with argon twice, and the melting temperature is 850 ℃, and the aluminum-lithium binary alloy ingot (AlLi20) is melted. 100kg, ready for storage after preparation.

[0164] 2. Alloy melting

[0165]Take the aluminum-lithium binary basic alloy ingot (AlLi20), remove the oxide scale and weigh 16.0kg. According to formula (5) and formula (6), it can be seen that 22.0kg of aluminum and 2.0kg of zinc should be added. 40 kg of raw material were placed in melting furnace 2 . The first time to evacuate to 0.1kPa, fill with argon to 101.3kPa and stir; the second time to evacuate to 10kPa, fill with argon to 101.3kPa and stir, the detection value of oxygen content i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
heating valueaaaaaaaaaa
melting pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses surface deliquescence-resistant aluminum-lithium-based ternary alloy powder as well as a preparation method and a system of the surface deliquescence-resistant aluminum-lithium-based ternary alloy powder. The ternary alloy powder comprises aluminum, lithium and zinc, and the mass content of the aluminum is 70%-98%; the mass content of lithium is 1-20%, and the mass content of zinc is 1-10%. The preparation method comprises the steps that under the argon positive pressure condition, metal containing aluminum and lithium is smelted in a silicon carbide crucible smelting furnace, an aluminum-lithium binary alloy ingot is obtained, then the aluminum-lithium binary alloy ingot, aluminum and zinc are smelted in the silicon carbide crucible smelting furnace, an aluminum-lithium-zinc ternary alloy feed liquid is obtained, the aluminum-lithium-zinc ternary alloy feed liquid is conveyed to an atomization tank through a niobium alloy pipeline, and the atomization tank is used for atomization. And carrying out disc type centrifugal atomization and screening to obtain the surface deliquescence-resistant aluminum-lithium-based ternary alloy powder. The surface of the prepared aluminum-lithium-based ternary alloy powder has the characteristics of corrosion resistance and deliquescence resistance, and high activity and stability can be kept under common storage conditions.

Description

technical field [0001] The invention relates to the technical field of alloy powders, and further relates to a surface deliquescence-resistant aluminum-lithium-based ternary alloy powder and a preparation method thereof. Background technique [0002] Aluminum-lithium binary alloy powder is a series of aluminum-lithium alloy powder made from aluminum-lithium alloys with different lithium content by atomization into spheres. Compared with aluminum powder, aluminum-lithium binary alloy powder has higher calorific value and higher activity than aluminum, and burns faster and reacts more completely in various energetic materials such as high-energy explosives, solid propellants and pyrotechnics. , is a kind of high calorific value and high reaction rate alloy fuel with wide application potential. [0003] However, the lithium oxide on the surface of the aluminum-lithium alloy powder easily interacts with water molecules in the air, causing the surface of the alloy powder to deli...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/10B22F9/10B22F1/065C06B27/00
CPCC22C21/00C22C21/10B22F9/10C06B27/00Y02E60/10
Inventor 赵婉君焦清介朱艳丽乐威欧亚鹏曾鑫刘大志
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap