It is understood that zirconia ceramic is a new type of high-tech ceramic. In addition to precision ceramics, it should have high strength, hardness, high temperature resistance, and Due to conditions such as acid and alkali corrosion and high chemical stability, and having higher toughness than ordinary ceramics, zirconia ceramics are also used in various industries, such as shaft seal bearings, cutting components, molds, automobile parts, etc., and can even be used on the human body , such as among artificial joints.
In the field of consumer electronics, zirconia ceramics have a hardness close to sapphire, but the total cost is less than 1/4 of sapphire, and its bending resistance is higher than Glass and sapphire, with a dielectric constant between 30-46, are non-conductive and will not block signals, so they are favored by fingerprint recognition module patches and mobile phone backplanes.
1. From the perspective of chemical properties: zirconia ceramics are absolutely inert, resistant to acid and alkali, and do not age, far exceeding plastics and metals.
2. From the perspective of communication performance: the dielectric constant of zirconia is three times that of sapphire, the signal is more sensitive, and it is more suitable for fingerprint recognition patches wait. From the perspective of shielding effectiveness, zirconia ceramics, as a non-metallic material, has no shielding effect on electromagnetic signals, does not affect the internal antenna layout at all, and can be conveniently formed in one piece.
3. From the perspective of physical properties: Ceramics are the structure of consumer electronicsComponents have great vitality. Especially for zirconia ceramics, it has been proven to be an extremely excellent structural material in many fields such as optical communications, industry, and medicine. Its entry into the field of consumer electronics is just a natural result of its cost reduction and brittleness improvement. From the perspective of hardness, the Mohs hardness of zirconia ceramics is around 8.5, which is very close to the Mohs hardness of sapphire 9, while the Mohs hardness of polycarbonate is only 3.0, the Mohs hardness of tempered glass is 5.5, and the Mohs hardness of aluminum-magnesium alloy 6.0, Corning glass has a Mohs hardness of 7.
