The country's vigorous development of new infrastructure, for many new materials, is a very rare opportunity. In recent years, a new materialZhou Kechao, vice president of the Central South University, said that combining the two ancient metals, copper and iron, is expected to bring new vitality and new wide applications, and copper iron alloy materials will bring a technological revolution in the application of a generation of materials.

1.seize the opportunity of the times, "copper-iron Alloy" attracted attention to the industry held two professional seminars, so that "copper-iron alloy" gradually into the public eye. In particular, the publicity title of the two meetings, "copper-iron Alloy, has great potential" , "copper-iron Alloy, set sail" , is striking and relevant, and not only points out the purpose of the meetings, it also explains the attention and expectation of the current market to the "copper-iron Alloy" new material. From the Ministry of Industry and Information Technology Related Initiatives and industry associations of the New Material Technology R & D, we can feel this concern. In 2020, the Ministry of Industry and Information Technology commissioned the China non-ferrous Metal Industry Association to carry out a strategic study on expanding the consumption of copper high-end materials. In the same year, miit also carried out the first batch of application insurance compensation mechanism work for the application of new materials, in order to expand the new application fields of products, ministry of Industry and Information Technology put forward the initiative and encourage: "I hope that through the opportunity of the seminar, upstream and downstream expansion of cooperation, to jointly enhance the development level of copper-iron alloy materials, to contribute to China's Non-ferrous metal industrial construction. ".

2.Copper-iron alloy is a copper-iron alloy system based on copper with iron added, which is composed of a certain proportion of copper-iron alloy with high conductivity of copper, high thermal conductivity and high magnetic permeability of iron, it is a typical composite material with integrated structure and function. The advantages of copper-iron alloy are numerous, from the product performance, it has excellent mechanical properties, thermal conductivity and electromagnetic shielding properties. For example, the conductivity of CUFE10 is 4 times as high as that of Phosphor Bronze, and its mechanical properties are higher than that of phosphor bronze. In particular, its wide spectrum of high-efficiency electromagnetic shielding performance is unmatched by other copper alloys. All over the world, copper-iron alloys can easily solve many problems and failures caused by electromagnetic fields in automobiles, pcs, electrical and electronic machines, industrial machinery, robot control equipment and other high-end equipment. In addition, the latest research results reveal that cu-fe alloy has excellent bacteriostatic and bactericidal functions due to its special electrochemical characteristics. From the point of view of production cost, iron is the most easily available and cheapest product in the metal raw materials, and the raw material cost of copper-iron alloy with high iron content is relatively low in the current copper alloy system. From the production link, the addition of iron will not produce harmful substances, the same does not exist when recycling harmful substances. Based on the above performance advantages, expert analysis, copper-iron alloy products have great application prospects. For example, copper-iron strip can be used in 5G mobile phone radiator board, shield cover, large size OLED backplane material, large size LED display panel radiator board (already used in Japan) , electrical connector connector connectors, wireless charging circuit board, air conditioning condenser tube, etc. Copper-iron Alloy Rod, Bar, wire, wire can be used for electromagnetic shielding wire, high-fidelity audio wire, electromagnetic shielding wire for high-speed motor of UAV, high-voltage cable, robot communication control wire, radio frequency wire, braided electromagnetic shielding net/tape, sea water breeding net box, welding wire, etc. Cu-fe alloy powder can be used in brake pads, absorbing shielding paint, 3d printing, medical antibacterial (such as diabetes wound healing) , etc. Copper-iron alloys also have potential applications in three-phase Induction Motors, injection molds, Electrical discharge machining, soldering iron heads and electrical contacts.

3. from the lab to the industrialized production of "one step" for decades in the past hundred years of research and development process, although it was found that the copper alloy has many excellent properties and application prospect, but due to poor compatibility of copper and iron, copper and iron liquid has no solvent separation phenomenon, copper and iron are called of "oil" and "water" in metal materials, therefore, Has not been able to produce a real use of copper and iron alloy. However, scholars around the world did not stop the pace of copper and iron alloy research. The world's largest research on copper and iron alloy is in Japan, has more than 30 years of research experience, mainly focused on the alloy preparation technology and market application, such as new energy automobile parts, piston head, electronic control box electromagnetic shielding materials, brake disc, etc. New medical machine manufacturing, shielding box, shielding room, sanitary clothing, etc. New generation of electronic communication field, communication base station shielding materials, thermal diffusion materials, connectors, etc. And all kinds of aerospace electromagnetic shielding wire, welding rod for ship propeller repair, heat dissipation mold, discharge machining wire and other fields. But the industrial production of copper and iron alloy has not been realized. Domestic study of copper and iron starts late, the original mainly concentrated in universities and colleges, such as dalian railway institute of Cu - 20 ? in situ composite materials research, chongqing university of science and technology of with high strength and high conductivity of Cu - Fe alloy research progress of Shanghai university of science and technology, microstructure and properties of different composition of copper alloy change research, zhejiang university, the study of copper alloy homogenization heat treatment, In Central South University, the research on the manufacture of copper and iron alloy, the evolution of microstructure and properties, etc., mostly stays in the laboratory stage. It was not until the active participation of enterprises that the fate of copper and iron alloy really changed.

4. The future of "copper-iron Alloy" as for the future development of copper-iron Alloy, the reporter felt during the interview that everyone's ideas were basically the same, the new copper-iron alloy material has broad prospects and now has world-leading technology, but in the field of application also need to make great efforts to research and development, promotion. At present, China is facing the problem of "choking up" of basic materials, opening up the domestic industrial supply chain, and constructing a new situation in which the domestic and international double-circulation mutually promote the development pattern, with the domestic large-circulation as the main body, the research, development and industrial application of new copper-iron Alloy materials will be a golden opportunity. At present, the industrialized preparation technology of copper-iron Alloy in China, Li Zhou, dean of the Central South University, told reporters, in particular, the preparation and processing of copper-iron master alloys, copper-iron alloy sheets, strips and foils, copper-iron alloy bars and wires and ultra-fine wires are at the leading international level, and the research on their related mechanisms is in the forefront, remarkable progress has been made in the declaration of relevant intellectual property rights. However, at present, the application research of the alloy is mainly conducted by Japanese and Korean enterprises, and there is still a big gap between domestic universities and manufacturers in the study of service properties of the alloy and its popularization and application. He believes that universities and research institutes can carry out systematic and in-depth research on the short-flow preparation technology, special physical properties and bacteriostatic properties of cu-fe alloys, and based on the special comprehensive properties of cu-fe alloys, carry out the application research under the different scene. Some enterprises say that the current environment is a very good opportunity for the development of copper-iron alloys, because the country is constantly putting forward localization, which shows that there are still many materials that are dependent on imports, "following" foreign countries, and copper-iron Alloy is one of the few new materials that can "lead the way, " which is why we need to invest more manpower and material resources to study in the future to maintain this lead. He thinks that the development direction of cu-fe alloy in the future is mainly applied research, such as new infrastructure field, new generation of communication and electronics field, all kinds of aerospace electromagnetic shielding field applications, etc. . For Shaanxi Sirui, in the future, they will focus on production and manufacturing, market research, standardization construction, and invest in more advanced manufacturing equipment and manufacturing technology, copper-iron alloys achieve high purity, high consistency, high uniformity and low-cost manufacturing. At present, the Enterprise has obtained 6 patents of copper-iron Alloy, and submitted to the National Standard Commission copper-iron Alloy Ingot, copper-iron Alloy Strip, copper-iron alloy bar and wire industry standard documents. High Iron Content copper-iron alloy material is a new system. More than 20 research institutions have been found to be engaged in related research abroad, especially in Japan, according to visible reports, especially in electromagnetic shielding, conduction and heat dissipation, weldability, bacteriostasis and other research areas have many achievements, and China in this regard almost blank. Now our breakthrough in material industrialization is only the first milestone of the Long March, and a great deal of work and investment is needed in its research and application. "We all shoulder an important historical mission, " Zheng told reporters, they plan to attract more application enterprises, production enterprises, research institutes, etc. to join the company on the basis of "close cooperation promoter" such as Ningbo Jintian copper industry, Shaanxi Sirui, and Central South University, focus on shielding, lead frame, welding materials, such as the application of clear needs, the development of target planning, division of Labor to enhance the efficiency of research and development. He also suggested that the media, through professional and in-depth coverage of the material, arouse the interest of professionals in a wide range of application fields in the country, in order to promote the "use, production, research, science, politics" broader R & D ALLIANCE AND GOVERNMENT POLICIES, projects (funds) and so on, to promote China's scientific and technological progress to make due contributions. In the industry held two consecutive professional seminars, many downstream enterprises also expressed the expectation of new copper-iron alloy materials. Some enterprises have expressed concern about the development of new copper-iron alloy materials and hope that they can be used in new energy, batteries and other fields as soon as possible. It is hoped that the new copper-iron alloy material can be applied to the production of high current cables and special vehicles as soon as possible, and can be replaced by domestic production as soon as possible. Mandy Wong, an associate professor at Hunan University, described the use of Eddy current Directional dampers in civil engineering and the need for new copper iron alloy materials for super high rise and super long span bridges. More enterprises have tried to use copper-iron alloy materials in the micro-motor opto-mechatronics, instead of the original SPCC materials (stamping + electroplating) idea. 

Source: Color News, by Zhang Xiaohong

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