What is 702 zirconium?
702 Zirconium is a zirconium alloy material that plays an important role in the industrial field, especially in the nuclear industry. The main component of 702 Zirconium is zirconium (Zr), which has a relatively high purity and generally contains a small amount of other elements as impurities or added elements to improve the material properties. Usually, its zirconium content is generally above 99%, and other elements that may exist include iron (Fe), chromium (Cr), nickel (Ni), etc. The content of these elements is usually low, generally at a level of a few tenths of a percent or even lower.
702 zirconium plate is a metal plate with zirconium as the main component, which has the following characteristics:
- Excellent corrosion resistance
Resistance to corrosion in various media: 702 zirconium plate shows excellent tolerance to many corrosive media, especially in chloride environments, high-temperature and high-pressure water, and various acidic and alkaline solutions. For example, in the coolant environment of a nuclear reactor, which contains a large amount of chloride and high-temperature and high-pressure water, 702 zirconium plate can work stably for a long time without obvious corrosion, which is one of the important reasons for its wide application in the nuclear industry.
Forming a stable oxide film: Zirconium easily reacts with oxygen in the air to form a dense zirconium oxide film on the surface. This oxide film has good stability and protection, which can prevent oxygen and other corrosive substances from further contacting the metal matrix, thereby effectively preventing corrosion. Even in some harsh chemical environments, this oxide film can remain intact, providing long-lasting protection for the zirconium plate.
- Good high-temperature resistance
High melting point: The melting point of zirconium plate is relatively high, generally around 1852℃, which enables it to maintain good physical and mechanical properties in high-temperature environments. In some occasions where processing or use at high temperatures is required, such as engine component manufacturing in the aerospace field, lining materials for high-temperature furnaces, etc., zirconium plate can withstand high temperatures without deformation or melting, ensuring the normal operation of the equipment.
High-temperature strength retention: Under high-temperature conditions, zirconium plates can still maintain high strength and hardness. For example, in the core of a nuclear reactor, the temperature can reach hundreds of degrees Celsius. Components such as fuel cladding made of 702 zirconium plates can maintain their structural integrity at such high temperatures, withstand the pressure of internal fuel and the scouring of external coolant, and ensure the safe operation of the nuclear reactor.
- Good mechanical properties
High strength and toughness: 702 zirconium plate has high strength and good toughness, and can withstand large external forces and impacts. This enables it to provide reliable support and protection in various structural applications and is not prone to breakage or damage. For example, in the aerospace field, when used to manufacture aircraft wings, fuselage structures, and other parts, it can meet the requirements of strength and safety while ensuring the lightweight of the aircraft structure.
Good processing performance: It has good plasticity and processability. It can be made into parts of various shapes and sizes through rolling, forging, stamping, welding, and other processing processes to meet the needs of different industries. For example, in the manufacture of chemical equipment, zirconium plates can be processed into various complex shapes of parts such as reactors, pipes, valves, etc., providing reliable equipment support for chemical production.
- Small neutron absorption cross-section
Nuclear performance advantages: In the nuclear industry, an important feature of the 702 zirconium plate is its small absorption cross section for neutrons. This means that it has little effect on the neutron flux in the nuclear reactor, which can make neutrons more effectively chain react in the reactor, and improve the operating efficiency and safety of the reactor. Therefore, 702 zirconium plate is widely used in key components such as fuel cladding and core structural materials of nuclear reactors and is one of the important materials to ensure the normal operation of nuclear reactors.
- Good biocompatibility
Potential for medical applications: 702 zirconium plate has good biocompatibility with human tissue and will not cause an immune response or other adverse reactions in the human body. This makes it have certain application potential in the medical field, such as the manufacture of artificial joints, dental implants, and other medical devices. Compared with traditional metal materials, medical devices made of 702 zirconium plates can better integrate with human tissue, and improve treatment effects and patients' quality of life.
