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Properties of lithium disilicate glass ceramics
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Properties of lithium disilicate glass ceramics

Views: 4     Author: Site Editor     Publish Time: 2024-10-21      Origin: Site

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Properties of lithium disilicate glass ceramics

Lithium disilicate glass ceramics, also known as lithium glass ceramics, is a high-performance engineering ceramic material, its performance characteristics mainly include the following aspects:

First, high mechanical properties

Bending strength and hardness: lithium disilicate glass ceramics have excellent bending strength and hardness, and their bending strength can reach 360MPa and hardness can reach 5.45Gpa, which is significantly higher than general glass materials and ordinary ceramic materials. This gives it a significant advantage in the manufacture of high-strength composite materials.

Wear resistance: The material has excellent wear resistance and can maintain good stability in high pressure or friction environments.

Second, excellent heat resistance

High temperature stability: lithium disilicate glass ceramics can withstand high temperatures, and its thermal expansion coefficient is close to that of metal, which can effectively prevent structural disorders and cracks caused by temperature changes.

Low coefficient of thermal expansion: The thermal expansion coefficient of the material matches the metal size well, which is suitable for manufacturing electronic devices and medical devices for high temperature work.

Third, good insulation performance

Electrical insulation performance: lithium disilicate glass ceramics have excellent electrical insulation properties, and the double-layer capacitors made can withstand voltages up to 400V. This makes it have a wide application prospect in the field of electronics industry.

Fourth, good biocompatibility

Biocompatibility: The material's biocompatibility is very good, and it has good compatibility and biosafety with human tissues. Therefore, it is widely used in the manufacture of artificial joints, artificial teeth, cochlear implants and other medical devices.

Fifth, stable optical performance

Optical transmittance: lithium disilicate glass ceramics have good transmittance in multiple optical bands such as visible light, infrared light and ultraviolet light, and their optical properties can remain relatively stable. This allows it to have a wide range of applications in the photoelectric industry, such as the preparation of various optical devices.

Sixth, other performance

Enhanced elastic modulus and Poisson's ratio: Lithium disilicate can enhance the elastic modulus and Poisson's ratio of glass ceramics, improving the strength and stability of the material. The results show that the elastic modulus and Poisson's ratio of glass ceramics are increased by 20% and 30% respectively after adding a certain amount of lithium disilicate.

Seventh, application field

Electronics industry: Used to manufacture electronic components such as insulators, high voltage capacitors, thermistors and PTC resistors.

Medical equipment: Used to manufacture artificial joints, artificial teeth, cochlear and other medical equipment.

Optoelectronics industry: Key materials for the preparation of various optical devices, such as laser technology and optical communications.

Aerospace: Due to its excellent performance, it is also considered for use in the aerospace field.

Energy batteries: There are also potential applications in the field of energy batteries.

In summary, lithium disilicate glass ceramics have shown a wide range of application prospects in many fields due to their excellent physical and chemical properties.


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