Unlock instant, AI-driven research and patent intelligence for your innovation.

Magnesium alloy sacrificial anode containing Sn and Bi

A sacrificial anode and magnesium alloy technology, applied in the field of magnesium alloy sacrificial anodes, can solve the problems affecting the service life of anode materials, uneven consumption of anode materials, uneven structure, etc., and achieve uniform dissolution consumption, long service life and convenient operation. Effect

Inactive Publication Date: 2017-04-26
LUOYANG INST OF SCI & TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the composition design and preparation process, ordinary magnesium alloy anode materials (such as AZ63, etc.) tend to have coarse grains and uneven structures, and aluminum and magnesium form a network of Mg 17 Al 12 phase, it is easy to form a micro-battery with the magnesium matrix, which makes the consumption of the anode material uneven and affects the service life of the anode material

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The magnesium alloy sacrificial anode containing Sn and Bi in this embodiment is composed of the following components in mass percentage: Al 5.5%, Sn 0.5%, Bi 0.1%, and the balance is Mg and unavoidable impurities. Wherein, the total mass percentage of Si, Fe, Cu and Ni in the impurities is less than 0.2%.

[0018] The preparation method of the magnesium alloy sacrificial anode containing Sn, Bi of the present embodiment is: take raw material pure magnesium (Mg), pure aluminum (Al), pure tin (Sn), pure bismuth (Bi), adopt corundum crucible, induction furnace Smelting to get magnesium liquid; in CO 2 +SF 6 Under gas protection, the magnesium liquid is heated to 720°C and poured into a steel mold, and cooled to obtain a magnesium alloy ingot.

Embodiment 2

[0020] The magnesium alloy sacrificial anode containing Sn and Bi in this embodiment is composed of the following components in mass percentage: Al 5.6%, Sn 0.4%, Bi 0.2%, and the balance is Mg and unavoidable impurities. Wherein, the total mass percentage of Si, Fe, Cu and Ni in the impurities is less than 0.2%.

[0021] The preparation method of the magnesium alloy sacrificial anode containing Sn and Bi in this embodiment is the same as that in Embodiment 1.

Embodiment 3

[0023] The magnesium alloy sacrificial anode containing Sn and Bi in this embodiment is composed of the following components in mass percentage: Al 5.7%, Sn 0.3%, Bi 0.3%, and the balance is Mg and unavoidable impurities. Wherein, the total mass percentage of Si, Fe, Cu and Ni in the impurities is less than 0.2%.

[0024] The preparation method of the magnesium alloy sacrificial anode containing Sn and Bi in this embodiment is the same as that in Embodiment 1.

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 relates to a magnesium alloy sacrificial anode containing Sn and Bi. The magnesium alloy sacrificial anode comprises the following components including, by mass, 5.5%-5.7% of Al, 0.3%-0.5% of Sn, 0.1%-0.3% of Bi and the balance Mg and inevitable impurities. According to the magnesium alloy sacrificial anode, pure Mg, pure Al, pure Sn and pure Bi are used as raw materials and are smelted and cast. According to the magnesium alloy sacrificial anode containing Sn and Bi, the alloy components include Mg-Al-Sn-Bi, the Sn and the Bi are added for refining grains and improving textures, and the magnesium alloy sacrificial anode is uniform in texture; the corrosion prevention effect is achieved, the beneficial effects of being even in dissolving consumption, long in service life and the like are achieved, and the magnesium alloy sacrificial anode is suitable for cathode protection under corrosion environments such as soil, sea water, water heaters and the like and has the wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of magnesium-based sacrificial anodes, in particular to a magnesium alloy sacrificial anode containing Sn and Bi. Background technique [0002] Cathodic protection technology is a kind of electrochemical protection technology. Its principle is to apply an external current to the surface of the corroded metal structure, and the protected structure becomes a cathode, so that the electron migration that occurs in metal corrosion is inhibited, and the corrosion is avoided or weakened. occur. There are two types of cathodic protection: impressed current cathodic protection and sacrificial anode cathodic protection. Among them, the sacrificial anode cathodic protection technology is to use a metal or alloy with a potential that is more negative than the metal to be protected to be electrically connected to the protected metal, relying on the current generated by the continuous corrosion and dissolution of the met...

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): C23F13/14C22C23/02C22C1/02
CPCC22C1/02C22C23/02C23F13/14
Inventor 李萍赵红玲王莹赵丽君郭力
Owner LUOYANG INST OF SCI & TECH