Magnesium (alloy) sacrificial anodes are mainly used in cathodic protection systems. The development trend of the industry is improving.

Magnesium sacrificial anode, also known as magnesium anode, magnesium alloy sacrificial anode, etc., is a type of magnesium-based corrosion control material in which the anode (metal) is gradually consumed as the current flows out. Common types include pure magnesium sacrificial anode and Mg-Mn alloy sacrificial anode. , Mg-Al-Zn alloy sacrificial anode, etc. Magnesium sacrificial anodes have lower corrosion potential and higher current efficiency than the metal being protected, and are often used in cathodic protection systems. The principle of cathodic protection of magnesium sacrificial anode refers to using magnesium as a protective electrode and connecting it with the protected metal to form a primary battery. When current passes through, magnesium acts as the negative electrode for oxidation reduction and sacrificial consumption, and the protected metal acts as the positive electrode to avoid corrosion.

Compared with other metal sacrificial anode materials, magnesium sacrificial anodes have the advantages of good electronegativity, high chemical activity, low current efficiency, high driving potential, no maintenance, and easy installation. It is the mainstream sacrificial anode material in the market and is mainly used in high-voltage applications. Cathodic protection of metal structural parts in resistive fresh water, salt water and soil environments. Specific application scenarios include cathodic protection of buried natural gas pipelines, city gas pipelines, oil pipelines, water pipelines, and ship hulls and ship hulls in fresh water and sea water media. Cathodic protection of steel structures such as submarine valves and seawater pipelines.

According to 《2023-2028 Magnesium released by the Industrial Research Center The sacrificial anode industry market in-depth research and investment prospect forecast analysis report》 shows that magnesium sacrificial anodes are one of the common anti-corrosion materials. As its application fields continue to expand, its market demand continues to increase and its consumption gradually increases. In 2022, the domestic magnesium sacrificial anode market consumption will exceed 4,000 tons, the market penetration rate is continuously increasing, and the industry development prospects are good.

At the same time, the current development of my country’s magnesium sacrificial anode industry is also benefited by the gradual improvement of relevant standards. For example, the international standard ISO 26202: 2019 “Magnesium and Magnesium Alloys—Magnesium Alloy Sacrificial Anodes” formulated under the leadership of China in 2019 stipulates the grades of magnesium alloy anodes. and related requirements; the national standard GB/T24488-2021 “Magnesium Alloy Sacrificial Anode Electrochemical Performance Test Method” issued by the State Administration for Market Regulation and the National Standardization Administration Committee in 2022 stipulates that magnesium alloy sacrificial anode samples are tested in saturated calcium sulfate and Test method for electrochemical properties when operating in magnesium hydroxide medium.

In recent years, the team of magnesium sacrificial anode manufacturers in my country has become increasingly large. The main companies include Longyi Anti-corrosion, Libo Light Alloy, Rongxuan Light Alloy, Huayu Magnesium, Huanlong Anti-corrosion Technology, Hongkun Cathodic Protection Anti-corrosion, Huilong Alloy Materials, Bogao cathodic protection, Xinhongda light alloy, Amnes Technology, Furuixin non-ferrous metals, etc.

Industry analysts said that magnesium sacrificial anodes are a commonly used cathodic protection material for pipelines and ships. Against the background of increasing market demand and the gradual establishment and improvement of relevant standards, its market penetration rate is continuously increasing, its development speed is accelerating, and the industry development trend is improving. At present, most enterprises in my country have deployed in the field of magnesium sacrificial anode R&D and production. In the future, under the background of continuous optimization of local enterprise technology, the magnesium sacrificial anode industry is expected to continue to upgrade in the direction of high-end.