Talking about the difference between zirconia and 99 porcelain
Many friends still can't tell the difference between zirconia ceramics and 99 porcelain, so let's talk about the difference between the two.
Zirconia ceramics is a new type of ceramic product. It is manufactured with high-tech technology and has many characteristics. For example, it has high strength and hardness. Compared with alumina ceramics, its quality is better Reliable. At the same time, the wear resistance of zirconia ceramics is also very good. Everyone knows that ceramic products will inevitably be worn and bumped in daily life. If the quality is not good, it may look old or broken, but The wear resistance of zirconia ceramics will be very strong. In addition to these, zirconia ceramics have phase transformation toughening and microcrack toughening, so they have high strength and toughness, known as "ceramic steel", and its fracture toughness is the highest among all ceramics. Has excellent room temperature mechanical properties. On this basis, we optimized the formula and process of zirconia, and obtained zirconia ceramics with fine grain structure, high hardness, high strength and high toughness. High hardness, high strength and high toughness ensure that zirconia ceramics have incomparable wear resistance than other traditional structural ceramics. Ceramics with a fine-grained structure can be processed to obtain very low surface roughness (<0.1um). Therefore, the coefficient of friction of the ceramic surface is reduced, thereby reducing friction and improving the quality of wire drawing (the wire drawn is smooth and burr-free, and is not easy to break).
99 ceramic is an alumina ceramic material with α-Al2O3 as the main crystal. It is a high-temperature structural ceramic material developed relatively early, and the content of Al2O3 is generally around 75--99.9%. It is usually used to classify according to the content of Al203 in the ingredients. If the content of Al203 is about 75%, let everyone call it 75 porcelain; if the content is about 85%, let everyone call it 85 porcelain; if the content is about 95%, let everyone call it It is called 95 porcelain, and if the content is about 99%, let everyone call it 99 porcelain.
α-Al2O3 also belongs to the three-point crystal system, and the unit crystal packet is a pointed rhombohedron. Only α-Al2O3 exists in nature, such as: natural corundum, ruby, sapphire and other minerals. However, the industrial 1AL203 is used for the preparation of bauxite and diaspore, and then pre-fired with various additives, which is the raw material for the preparation of Al2O3 porcelain.
Zirconia ceramics have excellent properties such as high melting point and boiling point, high hardness, excellent wear resistance, insulator at room temperature, and electrical conductivity at high temperature. So let people widely use: 1. mobile phone 3c electronics field, 2. smart wearable field, 3. optical communication field, 4. jewelry field, 5. automobile field, 6. daily life field, 7. other fields.
99 porcelain has high mechanical rigidity and high insulation resistance. It is used as vacuum device, device porcelain, thick film and thin film circuit substrate, thyristor and solid circuit shell, spark plug insulator, etc. With the advancement of science and technology, new varieties of alumina ceramics are emerging, such as transparent alumina ceramics, which are widely used in optics.
Through the above introduction of the editor, there is a big difference between oxide ceramics and 99 porcelain , first: different materials; second: different application fields; third: different content components; fourth: different hardness; It is better in terms of hardness, but each has its own advantages.