Nowadays, zirconia ceramics are advanced high-tech materials, which not only have the excellent characteristics of traditional fine ceramics, such as high strength, high hardness, high temperature resistance, acid and alkali corrosion resistance and high chemical stability, but also have toughness far beyond ordinary ceramics. The material is used in a wide range of applications, from shaft seal bearings, cutting tools, molds, automotive parts to industrial applications, and even to the medical field, such as artificial joints.
In the consumer electronics industry, zirconia ceramics are only a quarter of the cost because of their hardness comparable to sapphire, their flexural resistance exceeds that of glass and sapphire, the dielectric constant is between 30-46, and it is non-conductive, and will not have a shielding effect on the signal, so it has become the preferred material for fingerprint recognition module patches and mobile phone backsheets.
From a chemical point of view, zirconia ceramics are extremely inert, able to withstand extreme acid-base environments and do not age, and their performance far exceeds that of plastics and metals.
In terms of communication performance, zirconia has three times the dielectric constant of sapphire and a sharper signal response, making it ideal for applications such as fingerprint recognition patches. Due to its non-metallic properties, zirconia ceramics do not have a shielding effect on electromagnetic signals, which is very advantageous for the layout of internal antennas and enables more convenient integrated molding.
In terms of physical properties, ceramics show great potential as structural materials for consumer electronics. In particular, zirconia ceramics have proven their excellent performance as structural materials in many fields such as optical communications, industry, and medical treatment. With the reduction of costs and the improvement of brittleness, its application in the field of consumer electronics has become a natural trend.