High-corrosion-resistance Al-TM-RE amorphous aluminum alloy

An aluminum alloy and high corrosion resistance technology, which is applied in the field of high corrosion resistance Al-TM-RE series amorphous aluminum alloys, can solve the problems of non-replaceable on-site, difficult to meet the actual needs of engineering, and reduced protection, so as to improve the corrosion resistance etch ability, good glass forming ability, and the effect of passivation film thickness

Inactive Publication Date: 2020-03-31
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF13 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are also many deficiencies: such as the lack of active corrosion inhibitors, the protection in high pH environment is greatly reduced; it is invalid in the process of partial surface repair; it cannot be replaced on site
However, at present, the research on aluminum-based amorphous coatings at home and abroad is in its infancy, and it is difficult to meet the actual needs of engineering.

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
  • High-corrosion-resistance Al-TM-RE amorphous aluminum alloy
  • High-corrosion-resistance Al-TM-RE amorphous aluminum alloy
  • High-corrosion-resistance Al-TM-RE amorphous aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The compositional design of the highly corrosion-resistant Al-TM-RE series amorphous aluminum alloy provided in this example is specifically as follows: two kinds of alloy compositions are designed: alloy b and alloy c, wherein: alloy b chemical composition (molar percentage content): Al 86 %, Ni 6.0%, Co2.0%, Y 4.5%, La 0.75%, Ce 0.75%; alloy c chemical composition (molar percentage content): Al 86%, Ni6.0%, Co 2.0%, Y 4.5%, Ce 1.5%; the purity of raw material Al is ≥99.99%, and the purity of other elements is ≥99.999%. After the master alloy is prepared in a high-purity argon environment, a strip sample is prepared by a single-roll melt quenching method, and the final solidification structure is completely non-metallic. Crystalline structure with a thickness of 25-35 μm and a width of about 2.5-3.5 mm.

[0023] The aluminum-based strip sample designed and prepared in Example 1 has a completely amorphous structure, such as figure 1 As shown in the curves b and c in th...

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
thicknessaaaaaaaaaa
widthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a high-corrosion-resistance Al-TM-RE amorphous aluminum alloy, and belongs to the technical field of amorphous alloy materials. The designed Al-TM-RE amorphous aluminum alloy comprises chemical components including, by mole percent, 85-87% of Al, 5.5-6.5% of Ni, 1.5-2.5% of Co, 4.0-5.0% of Y and 0.5-1.5% of RE, wherein RE is Ce or a combination of La and Ce. The Al-TM-RE amorphous aluminum alloy is high in amorphous forming ability, and also has high corrosion resistance. Compared with a traditional Al-TM-RE pentabasic aluminum-based amorphous alloy system, the pittingpotential is increased by 60-140 mVSCE in a 3.5wt.% NaCl solution environment, a passivation film formed by anode polarization is thicker, and the corrosion resistance is better.

Description

technical field [0001] The invention relates to the technical field of amorphous alloy materials, in particular to a highly corrosion-resistant Al-TM-RE series amorphous aluminum alloy. The invention can also provide scientific guidance for the regulation and control of the corrosion resistance of other amorphous alloys. Background technique [0002] Generally, the corrosion resistance of aluminum alloy is manifested in that a denser oxide film formed on its surface has better atmospheric corrosion resistance, but its resistance to local corrosion is poor in harsh environments (such as containing chloride ions), especially The local corrosion damage of high-strength aluminum alloys used in aerospace is one of the main failure modes. The traditional corrosion protection methods for aluminum alloys mainly include the following three types: mechanical coating, coating of corrosion inhibiting paint and chromate conversion coating. The mechanical aluminum cladding method is a wi...

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): C22C45/08
CPCC22C45/08
Inventor 王建强杨番杨柏俊吕威闫张锁德孙文海
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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