When it comes to ceramics, everyone will feel very familiar. It has penetrated into all aspects of our lives. There are many ceramic products in our daily pots and pans, and our Chinese ceramics are world-renowned and are the works of art that many people dream of. And collectibles, the Chinese English word "china" also means ceramics. However, today's ceramics are not only used in life, but also occupy an increasingly important position in many fields such as industry, scientific research, food, medical care, etc. They have a new name called special ceramics. So what is special ceramics? How is it different from ordinary ceramics?
The term special ceramics first appeared in the UK in the 1950s. At that time, people were called refractory materials, electronic ceramics, electric ceramics, atomic energy ceramics and so on due to their different properties and uses. It refers to the use of high-precision selected raw materials, with a chemical composition that can be precisely controlled, manufactured and processed according to methods that facilitate structural design and controlled manufacturing, and have excellent properties. Nowadays, it has many different names in different countries and regions. In the UK, it is called technical ceramics. In the United States, it is called advanced ceramics, modern ceramics or high-efficiency ceramics. In Japan, it is called fine ceramics and new ceramics. In our China, the name of special ceramics is widely known, but in addition, people also call it industrial ceramics and advanced ceramics.
There are obvious differences between special ceramics and ordinary ceramics, mainly in the following aspects.
1. Different raw materials: traditional ceramics use natural minerals as raw materials, such as clay, quartz, feldspar, etc.; while special ceramics use less or no clay, but use various processed chemicals or synthetic minerals as raw materials, such as alumina , zirconia, etc.
2. Different structure: traditional ceramics have many impurities and pores due to the relationship between materials and processes; while special ceramics are fine in texture and have excellent characteristics in terms of hardness, strength, high temperature, corrosion, oxidation, wear, etc. .
3. Different properties: Most traditional ceramics are mainly used for viewing and daily use; while special ceramics are often used in different aspects due to their own characteristics, such as high temperature resistance, oxidation resistance, corrosion resistance and other characteristics. .
4. Different production processes: The traditional ceramic production process is simple. After grouting, it can be shaped, and it can be simply fired if it is more complicated; and a series of complex production methods for special ceramics, whether it is pre-pressing, It takes a long time for injection, lamination or later isostatic pressing. If nothing else, it is much more complicated and stricter than traditional ceramics in terms of molding, not to mention the final cutting, Punch, grind and polish.
5. Different applications: traditional ceramics are mostly used in daily life, such as cups, bottles, pots, etc., which are commonly used in our daily life. Some of the more exquisite ones are used as handicrafts, and most of them have ornamental value; while special ceramics are different. Different characteristics, applied in various aspects, completely break the use restrictions of traditional ceramics, can be widely used, and bring convenience to people's lives.
