Novel high-performance magnesium alloy galvanic anode material

Abstract

The invention relates to a novel cathode protection used high-performance magnesium alloy galvanic anode material, and belongs to the technical field of new materials. The material provided by the invention is prepared by alloying and smelting an AZ31 magnesium alloy, which is used as a base material, with eight types of alloy elements Ce, Ca, Cd, Y, Sn, Ga, In and Ti added. The prepared novel high-performance magnesium alloy galvanic anode material overcomes the defects such as low current efficiency of a current internationally-used galvanic anode material. Compared with the performance of GB / T17731-2004 magnesium alloy anode series, the material provided by the invention has the characteristics of low open circuit potential, high current efficiency, a low self-corrosion rate and the like.

Description

technical field [0001] The invention belongs to the technical field of new materials. Background technique [0002] Statistics show that the economic loss caused by metal corrosion is staggering, accounting for about 3% of the gross national product. Therefore, it is of great significance to study new anti-corrosion technologies and develop new anti-corrosion materials. [0003] Electrochemical protection is an effective method to prevent metal corrosion. Sacrificial anode protection is a kind of electrochemical protection method. This method is electrically connected to the protected body (metal component) by means of an alloy electrode with a more negative potential than the protected body. At the expense of this more negative alloy ionization, the protected body achieves corrosion protection. Therefore, this alloy with a more negative potential is called a sacrificial anode. The electrochemical performance of the sacrificial anode determines the feasibility, applica...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to develop a new type of high-performance magnesium alloy sacrificial anode material for the shortcomings of the current magnesium alloy sacrificial anode with small effective current capacity and low current efficiency. Compared with the GB / T17731-2004 series magnesium alloy anode, it has an open circuit potential Low, high current efficiency, low self-corrosion rate, etc.