Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Zinc-free aluminum alloy sacrificial anode

A sacrificial anode, aluminum alloy technology, applied in the field of anti-corrosion, can solve the problems of reducing the quality of aquatic products in the mariculture industry, hindering the growth and maturity of individuals, hindering the movement of biological breathing, etc. Effect

Pending Publication Date: 2022-02-18
SUNRUI MARINE ENVIRONMENT ENG
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although zinc is an essential element, when the content of zinc in organisms exceeds a certain threshold, it will hinder the breathing movement of organisms, and hinder the growth and maturity of individuals. If the content of zinc in fish and molluscs is too high, their body surface There will be blue spots appearing on the surface, resulting in a reduction in the production of mariculture and a decline in the quality of aquatic products

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
  • Zinc-free aluminum alloy sacrificial anode

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0042] The formula of the zinc-free aluminum alloy sacrificial anode is (mass percentage): Sn 0.01%, In 0.005%, wherein impurity elements Fe 0.058%, Si 0.056%, Cu 0.004%, and the balance is Al.

[0043] Put the aluminum ingot into a heating device (melting furnace, crucible or heating furnace, etc.) and heat the aluminum ingot to 720 ° C ~ 750 ° C to completely melt the aluminum ingot to obtain aluminum liquid (no solid aluminum ingot visually); then use a small Scoop aluminum liquid from the crucible, wrap the tin block and indium block with aluminum foil, add them to the aluminum liquid in the small crucible, stir them with a graphite rod to dissolve them, and then pour them into a high-temperature heating device to obtain a mixture of aluminum tin and indium liquid; continue to heat the aluminum-tin-indium mixture, and stir it to make it fully melt, and remove the dross in the aluminum-tin-indium mixture; stop heating after the aluminum-tin-indium mixture is fully melted, an...

example 2

[0046] The formula of the zinc-free aluminum alloy sacrificial anode is (mass percentage): Sn 0.01%, In 0.03%, wherein impurity elements Fe 0.058%, Si 0.062%, Cu 0.004%, and the balance is Al.

[0047] Put the aluminum ingot into a heating device (melting furnace, crucible or heating furnace, etc.) and heat the aluminum ingot to 720 ° C ~ 750 ° C to completely melt the aluminum ingot to obtain aluminum liquid (no solid aluminum ingot visually); then use a small Scoop aluminum liquid from the crucible, wrap the tin block and indium block with aluminum foil, add them to the aluminum liquid in the small crucible, stir them with a graphite rod to dissolve them, and then pour them into a high-temperature heating device to obtain a mixture of aluminum tin and indium liquid; continue to heat the aluminum-tin-indium mixture, and stir it to make it fully melt, and remove the dross in the aluminum-tin-indium mixture; stop heating after the aluminum-tin-indium mixture is fully melted, and...

example 3

[0050] The formula of the zinc-free aluminum alloy sacrificial anode is (mass percentage): Sn 0.04%, In 0.005%, wherein impurity elements Fe 0.058%, Si 0.062%, Cu 0.004%, and the balance is Al.

[0051] Put the aluminum ingot into a heating device (melting furnace, crucible or heating furnace, etc.) and heat the aluminum ingot to 720 ° C ~ 750 ° C to completely melt the aluminum ingot to obtain aluminum liquid (no solid aluminum ingot visually); then use a small Scoop aluminum liquid from the crucible, wrap the tin block and indium block with aluminum foil, add them to the aluminum liquid in the small crucible, stir them with a graphite rod to dissolve them, and then pour them into a high-temperature heating device to obtain a mixture of aluminum tin and indium liquid; continue to heat the aluminum-tin-indium mixture, and stir it to make it fully melt, and remove the dross in the aluminum-tin-indium mixture; stop heating after the aluminum-tin-indium mixture is fully melted, an...

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

No PUM Login to View More

Abstract

The invention provides a zinc-free type aluminum alloy sacrificial anode which comprises aluminum, tin and indium, and the zinc-free type aluminum alloy sacrificial anode comprises the components in percentage by mass: 0.01%-0.04% of tin, 0.005%-0.03% of indium and the balance being aluminum. In the zinc-free aluminum alloy sacrificial anode, the mass fraction of impurity iron is smaller than or equal to 0.06%, the mass fraction of impurity silicon is smaller than or equal to 0.07%, and the mass fraction of impurity copper is smaller than or equal to 0.005%. The zinc-free type aluminum alloy sacrificial anode does not contain zinc, the influence of zinc element dissolution in the sacrificial anode on marine ecology is avoided, the open circuit potential of the zinc-free type aluminum alloy sacrificial anode is -1.23 V to -1.1 V, the working potential of the zinc-free type aluminum alloy sacrificial anode is -1.11 V to -1.04 V, and the capacitance of the zinc-free type aluminum alloy sacrificial anode is greater than or equal to 2500 A*h / Kg, so that the working potential of the zinc-free type aluminum alloy sacrificial anode meets the standard requirement, and the capacitance of the zinc-free type aluminum alloy sacrificial anode is high. And meanwhile, the zinc-free type aluminum alloy sacrificial anode is uniform in surface dissolution, corrosion products are easy to fall off, and the zinc-free type aluminum alloy sacrificial anode can be widely applied to cathode protection engineering of ocean structures, submarine pipeline engineering, ocean equipment and the like.

Description

technical field [0001] The invention relates to the field of anti-corrosion technology, in particular to a zinc-free aluminum alloy sacrificial anode. Background technique [0002] The sacrificial anode cathodic protection method is a commonly used corrosion protection method for marine structures. It has the advantages of simplicity, reliability, low cost, and maintenance-free. Its protective effect is closely related to the material of the sacrificial anode. Aluminum alloy sacrificial anode has the advantages of light weight, high capacitance, and low price, and is widely used in the corrosion protection of various steel structures. At present, the most widely used in marine environment is Al-Zn-In (aluminum-zinc-indium) series alloy anode. [0003] With the large number of marine projects such as offshore platforms, port engineering wharves, offshore wind power, and submarine pipelines, the use of aluminum alloy sacrificial anodes has increased dramatically. Taking the c...

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): C23F13/14C22C1/02C22C21/00
CPCC23F13/14C22C21/00C22C1/026
Inventor 于林刘朝信王海涛丁慧王廷勇
Owner SUNRUI MARINE ENVIRONMENT ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com