What are the chemical properties of lithium disilicate glass ceramics

The chemical properties of lithium disilicate glass ceramics are quite stable, which is reflected in the following aspects:

First, composition and structure

Main components: The main components of lithium disilicate glass ceramics include silicon oxide (SiO2), lithium oxide (Li2O), alumina (Al2O3), etc., and may contain a small amount of other metal oxides, such as potassium oxide (K2O), calcium oxide (CaO), sodium oxide (Na2O), etc. Among them, the content of lithium oxide accounts for a relatively large, usually between 15% and 25%.

Structural characteristics: lithium disilicate glass ceramics is a polycrystalline material composed of lithium disilicate crystal phase and glass phase. This special structure makes lithium disilicate glass ceramics have the advantages of both glass and ceramic materials.

Second, chemical stability

Acid and alkali resistance: lithium disilicate glass ceramics show good chemical stability under strong acid, strong alkali and other conditions, and are not easy to be corroded and dissolved.

Thermal stability: the material has a high thermal stability, sintering temperature reached 900℃ or more can still maintain a stable form, no deformation and thermal cracking.

Third, other chemical properties

Light transmittance: The light transmittance of lithium disilicate glass ceramics is as high as 90%, which is more transparent than ordinary ceramics. This excellent light transmittance makes it have a wide application prospect in optical devices and other fields.

Biocompatibility: Lithium disilicate glass ceramics have good compatibility and biosafety with human tissues, so they are widely used in the medical field, such as dental fillers, artificial bone substitutes, cochlear implants and so on.

Fourth, application field

Electronic industry: Lithium disilicate glass ceramics can be used to prepare high-density capacitors, high-speed electronic components and microwave electronic components.

Photoelectric industry: This material plays a key role in areas such as laser technology and optical communications.

Medical industry: Due to its good biocompatibility, lithium disilicate glass ceramics occupy an important position in the manufacturing of medical devices.

Other industries: In addition, the material can also be used in aerospace, energy batteries and other fields.

In summary, lithium disilicate glass ceramics have excellent chemical stability, thermal stability, good light transmission and biocompatibility, and these excellent chemical properties provide a solid foundation for its application in many fields.