Ceramic Materials

Silicon carbide ceramics (SiC ceramic) offer a unique combination of high hardness, excellent high-temperature resistance, superior wear resistance, and outstanding corrosion resistance, making them an essential material in refractory applications, mechanical seals, heat exchangers, and high-power electronic components. However, their brittleness, poor thermal shock resistance, and high production costs pose certain limitations. Despite these challenges, high-hardness silicon carbide remains a key material in industries requiring durability, strength, and thermal efficiency, proving its significance in modern engineering and advanced manufacturing.

Silicon nitride ceramic (Si3N4) offers a wide range of advantages such as high hardness, excellent thermal stability, corrosion resistance, and low density, making it suitable for demanding applications across various industries. However, its brittleness, machining challenges, and poor electrical conductivity are factors to consider when choosing it for specific applications. Despite these drawbacks, the material's unique properties continue to drive its adoption in fields like aerospace, automotive, and electronics.

Based on the phase transformation toughening effect of metastable tetragonal zirconia under stress induction, zirconia phase transformation toughening ceramics mainly include Tetragonal Zirconia Polycrystalline (TZP), Partially Stabilized Zirconia (PSZ), and Zirconia Toughened Ceramics (ZTC).

Silicon carbide ceramics produced using different sintering techniques each have their unique advantages, leading to variations in microstructure, performance, and application areas. But can you clearly differentiate between these types of silicon carbide ceramics?

High-temperature ceramic materials are essential in modern industries where extreme conditions are common, such as aerospace, energy production, electronics, and advanced manufacturing. These materials exhibit exceptional properties like high thermal resistance, mechanical strength, and durability under harsh conditions.

Boron Nitride is an advanced ceramic material synthesized from hexagonal boron nitride and is often referred to as "white graphite" due to its white appearance. Boron nitride exists in various structural forms and manufacturing processes, resulting in different types of boron nitride materials, such as hot-pressed boron nitride and pyrolytic boron nitride, each with distinct properties and applications.

Among the various forms of AlN ceramics, mirror-polished AlN ceramic plates stand out due to their remarkable surface smoothness, enhanced flatness, and precise dimensional tolerances. These attributes significantly improve the material’s functional performance, making it a preferred choice for applications that demand high precision, reliability, and aesthetic quality.

Macor ceramic, fully known as "Machinable Ceramic," is a type of machinable glass ceramic. This unique engineering material is widely used in aerospace, semiconductor, laboratory equipment, and other high-tech fields due to its excellent machinability, thermal stability, and electrical insulation properties.

Common colors of zirconia ceramics include white, black, pink, and blue. These colors correspond to different chemical compositions and crystal structures, leading to variations in their properties.

Since Garvie et al. published "Ceramic Steel" in the journal Nature in 1975, research on phase transformation ceramic toughening related to zirconia has been receiving significant attention. One of the most classic examples is the introduction of zirconia into alumina ceramics, resulting in Zirconia Toughened Alumina (ZTA) ceramics.