Amorphous alloy coating has excellent physical and chemical properties and great industrial application value

Amorphous alloy coating is made of amorphous alloy and prepared by thermal spraying technology. It has excellent physical and chemical properties, such as high strength, high hardness, high wear resistance, high corrosion resistance, etc. In addition, it also has excellent magnetic properties. Amorphous alloy coatings can be used in the manufacturing of drill pipes, water pumps, ball valves, impellers, engines, steam turbines and other products, and are widely used in oil and gas extraction, hydropower generation, industrial equipment, shipbuilding, marine engineering and other industries.

According to the“China Amorphous Alloy Coating Industry Market In-depth Research and Development Prospects Forecast Report 2022-2027” released by the Industrial Research Center It shows that in the manufacturing industry, many equipment need to operate in harsh environments with high friction and strong corrosiveness for a long time, and are easily damaged. To ensure the long-term stable operation of these equipment, coating protection is indispensable. Amorphous alloys do not have problems such as grain boundaries and dislocations. Compared with traditional coating materials, they have outstanding advantages such as wear resistance and corrosion resistance. Thermal spraying technology can be used to form high-quality coatings, so they have great application value in the industrial field.

Thermal spraying technologies that can be used for amorphous alloy coatings include hypersonic flame spraying (HVOF), plasma spraying (PS), electric arc spraying (EAS), cold spraying (CGDS), laser cladding (LC), and spray deposition (SD). ), etc. Each of these technologies has its own advantages and disadvantages. At present, the key issues of amorphous alloy coating are to reduce the porosity of the coating and improve the bonding strength between the coating and the substrate. Among them, plasma spraying has more competitive advantages in terms of coating density and bonding strength with the substrate.

The concept of amorphous alloy coating appeared in the mid-1980s. Flame spraying technology was first used to spray iron-based amorphous alloy powder onto the surface of a metal copper plate to prepare an iron-based amorphous alloy coating. After that, research on amorphous alloy coatings continued to deepen. Scientists used supersonic flame spraying technology to prepare micron-level amorphous alloy coatings on the surface of stainless steel materials for marine pumps, and sprayed iron-based amorphous alloy coatings on the surface of nuclear waste storage tanks. The discovery that the long-term protective effect of equipment can be improved has promoted the continuous expansion of the application scale of amorphous alloy coatings.

Industry analysts said that amorphous alloy coatings generally use amorphous alloy powder as material, such as plasma spraying, and amorphous alloy coatings are also used. Alloy wire is a material such as arc spray. my country’s amorphous alloy industry is becoming increasingly mature and has highly competitive amorphous alloy powder production companies, such as Yunlu Co., Ltd. In 2013, Yunlu Co., Ltd. achieved large-scale production of amorphous alloy powder, and in 2021, it will achieve kilogram-level preparation of spherical amorphous alloy powder. This has laid a solid foundation for the development of my country’s amorphous alloy coating industry.

The technical barriers to low-end amorphous alloy powder are low, and the number of companies entering the market in my country is increasing. Most companies are insufficient in strength and have poor product performance and quality. In order to ensure the quality of the coating, the amorphous alloy powder used in the amorphous alloy coating has higher quality requirements, such as plasma spraying technology. In the future, competition in my country’s amorphous alloy powder market will become increasingly fierce, which will have a certain impact on the development of the amorphous alloy coating industry, but the extent of the impact will be limited.