Zirconia ceramic is a new type of high-tech ceramic known for its high strength, hardness, high-temperature resistance, and resistance to acid and alkali corrosion, along with excellent chemical stability. It also boasts greater toughness than standard ceramics, making it applicable in various industries such as shaft seals, cutting components, molds, automotive parts, and even in human applications like artificial joints.
In the consumer electronics sector, zirconia ceramic, with its hardness close to that of sapphire but at a total cost less than a quarter of sapphire, boasts a higher fracture resistance than glass and sapphire. Its dielectric constant ranges from 30 to 46, is non-conductive, and doesn't block signals, making it popular for fingerprint recognition module substrates and smartphone backs.
1. In terms of chemical properties: Zirconia ceramic exhibits excellent inertness, acid and alkali resistance, and non-aging, far surpassing plastics and metals.
2. In terms of communication performance: Zirconia has a dielectric constant three times that of sapphire, offering greater signal sensitivity and is particularly suitable for applications like fingerprint recognition chips. Regarding shielding effectiveness, zirconia ceramic, as a non-metallic material, does not shield electromagnetic signals, ensuring it won't interfere with internal antenna layouts and allows for easy one-piece molding.
3. From a physical perspective: Ceramics have a strong vitality as structural components in consumer electronics. Particularly, zirconia ceramics have been proven to be a very nice material for components in fields such as optical communication and industry. Entering the consumer electronics market is simply a natural progression after their costs have decreased and brittleness has been improved. In terms of hardness, the Mohs hardness of zirconia ceramics is around 8.5, very close to sapphire's 9 on the Mohs scale, while polycarbonate has a Mohs hardness of 3.0, toughened glass has a Mohs hardness of 5.5, aluminum-magnesium alloy has a Mohs hardness of 6.0, and Corning glass has a Mohs hardness of 7.
