New Applications of Zirconia Ceramics
At present, intelligent wearable devices are mainly used in the field of sports and health, such as recording the amount of exercise and heart rate detection. With the development of artificial intelligence technology, intelligent wearable devices are becoming more intelligent and will become indispensable supplies in our life.
The shell of the existing intelligent wearable device is usually made of metal or plastic. Although the heat dissipation effect of metal is better, it is also a double-edged sword, because the thermal conductivity of metal may make the equipment hot and affect the hand feel. Moreover, the metal is usually treated by anodizing and multi-color painting. If physical collision occurs, it is very easy to fall off and oxidize, reducing the gloss and affecting the appearance; The quality of plastic is poor, and the premium feeling produced by metal and glass is relatively bleak. Even if the manufacturers continue to add different design elements such as patterns and imitation leather, it is still inferior in terms of hand feel. The heat dissipation effect is general, and the heat may not be dissipated in time, which may affect the operation effect of the equipment.
As an intelligent wearable material, ceramic has the following advantages:
High hardness and wear resistance
From the hardness of zirconia ceramics, the Mohs hardness of zirconia ceramics is about 8.5, which is very close to the Mohs hardness of sapphire 9. It is higher than the hardness of daily used metals and glasses, and is not easy to generate scratches or abrasion marks. Compared with plastic spraying, anode and PVD, it overcomes the uncomfortable problems such as peeling, discoloration and wear, and has comparative advantages.
Skin friendly, non allergic
Steel watches contain nickel and other substances. The chemical components (salt ions) in sweat will make these metal elements on the case more active (ionized) and cause skin abnormalities. The ceramic material will not have metal ions precipitated, and because of its low thermal conductivity, it is not easy to cause allergy when wearing. Compared with metal and plastic, it is more skin friendly, has good compatibility with the human body, and is not easy to produce bacteria.
Good heat dissipation and heat equalization
It has good heat dissipation and heat equalizing property, which can effectively solve the heat conduction problem of equipment. It is the best heat dissipation solution material.
Jade texture, warm color
Ceramics have the color and texture of jade. By adding rare earth elements and artificial color matching, the color is changeable and beautiful, which can improve the product grade and consumer attraction. After polishing, zirconia has the texture of jade. It is a high-end decorative material second only to gems and has a visual aesthetic feeling.
The dielectric constant is 3 times that of sapphire. The signal is more sensitive and electrically insulated. It can realize wireless charging without signal shielding. It supports intelligent device positioning, telephone, payment and subway meter brushing signal functions.
Suitable for mass production, low cost
The key technology of the localization of nano powder has been broken through to meet the mass production of ceramics. The mass production molding methods include dry pressing, injection, casting, gel injection molding and so on, and the production cost is low.