Каковы свойства циркониевой керамики

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Циркониевая керамика, as an advanced structural and functional ceramic material, are known as “ceramic steel” and “universal ceramics” due to their combination of numerous outstanding properties. It not only performs well in traditional industrial fields, but also plays an indispensable role in modern high-tech and medical fields. This article will systematically analyze the core properties of zirconia ceramics and explore in depth how these properties can be transformed into the ability to solve practical problems.

Core Physical and Mechanical Properties
The most remarkable feature of zirconia ceramics is their excellent mechanical properties, making them an ideal choice for demanding applications.

1. Extremely high strength and toughness
   Performance description: The bending strength and compressive strength of zirconia ceramics are much higher than other types of engineering ceramics (such as alumina ceramics), and its fracture toughness is one of the highest among all ceramic materials.
   Problem solving: This feature perfectly solves the inherent “brittleness” pain point of ceramic materials. It enables zirconia components to withstand high loads, withstand impact and vibration, and is less prone to cracking, crushing or fracture, greatly improving the reliability and service life of the product.
2. Excellent hardness and wear resistance
   Performance description: The Mohs hardness of zirconia is as high as 8.5, close to sapphire and silicon carbide. It has a low coefficient of friction and excellent wear and scratch resistance.
   Problem solving: Suitable for working conditions with severe friction and wear. Solved the problem of premature failure of key components of equipment due to wear and significantly reduced maintenance costs and downtime, making it particularly suitable for manufacturing wear-resistant parts such as bearings, shaft sleeves, nozzles, and cutting tools.
3. Excellent fracture resistance
   Performance description: This is mainly attributed to its unique “phase transition toughening” mechanism. When external stress attempts to trigger the propagation of microcracks, the zirconia crystal phase undergoes a transformation accompanied by volume expansion, effectively suppressing further crack propagation and even “self-healing” microcracks.
   Problem solving: Provides extremely high safety and stability for use, avoiding catastrophic sudden breakage, especially in the medical and precision fields.

Surface and chemical properties
In addition to mechanical properties, the surface and chemical properties of zirconia ceramics are also excellent.

1. Низкий коэффициент трения и самосмазывающиеся свойства
   Performance description: Zirconia has a smooth surface, extremely low friction coefficient when paired with metals or other materials, and has certain self-lubricating properties.
   Problem solving: It reduces the frictional resistance and energy loss between moving parts, reduces the generation of operating noise and heat, and achieves “dry operation” without the need for lubricating oil or a small amount of lubrication. It is very suitable for industries such as food and medical that require high cleanliness.
2. Отличная коррозионная стойкость
   Performance description: Zirconia is an inert material with strong resistance to most acids, bases, solvents, and molten metals. Its chemical stability is superior to most metals and alloys.
   Problem solving: Perfectly solves the problem of metal parts being easily corroded, rusted, and contaminated in highly corrosive chemical environments (such as chemical and semiconductor manufacturing), ensuring the long-term stable operation of equipment and the purity of products.
3. Biocompatibility
   Performance description: Medical grade zirconia is non-toxic, non allergenic, and non repulsive to human tissues, and has good biocompatibility.
   Problem solving: Make it an ideal material for surgical tools, dental implants, dental crowns, bridges, and artificial joints (such as hip joint ball heads), safe and reliable in the human body, and capable of long-term stable service.

Thermal and Electrical Properties
Zirconia ceramics also perform well in high temperatures and special electrical environments.

1. Low thermal conductivity and high temperature resistance
   Performance description: Zirconia is an excellent thermal insulator, with a thermal conductivity only 1/10 of stainless steel. At the same time, it can work stably in high temperature environments (up to 2400 ° C).
   Problem solving: As a high-temperature furnace lining, engine component, and thermal barrier coating (such as aviation engine blade coating), it can effectively isolate heat, protect internal metal structures, and improve thermal efficiency and equipment performance.
2. High resistivity and ionic conductivity
   Performance description: It is an excellent electrical insulator at room temperature. But at high temperatures, certain doped zirconia (such as yttrium stabilized zirconia) can become excellent conductors of oxygen ions.
   solve the problem:
   Insulation: Used for manufacturing insulators and sensor bases in high-temperature environments.
   Ionic conductivity: This characteristic makes it the core material (electrolyte) of solid oxide fuel cells (SOFCs), used for efficient energy conversion and solving clean energy problems; It is also a key component of oxygen sensors (such as automobile exhaust lambda sensors), used for real-time monitoring and control of air-fuel ratio, solving environmental and fuel efficiency problems.

Zirconia ceramics are not only a material, but also an empowering technology. It provides high-performance, high reliability, and long-life solutions for various industries through its outstanding comprehensive performance, continuously driving technological progress and industrial upgrading.

Керамика Brudeze поставляет и продает широкий ассортимент высококачественного кварцевого стекла, включая глиноземистую керамику, циркониевую керамику, керамику из нитрида кремния, керамику из нитрида алюминия, керамику из карбида кремния, керамику из карбида бора, биокерамику, обрабатываемую керамику и т.д. Мы можем удовлетворить требования заказчика к различным керамическим изделиям.