Multicrystalline Fine Ceramics (also known as "advanced ceramics") possess a microstructure of crystal grain boundaries and microscopic pores which diffuses light and makes it difficult to pass through.
In contrast, single-crystal sapphire contains no grain boundaries or pores, making it as clear as glass. It also exhibits far superior strength and thermal conductivity than glass. As a result, single-crystal sapphire is an excellent material for making windows for high power LCD projectors, among other things.
Additionally, semiconductive and dielectric crystals are employed in products that make use of the tonal and refractive changes in light which result from interactions between crystals and magnetic fields.
Applications: Windows for high power LCD projectors, fluorescent lights, light sensors and other related products.
Fine Ceramics are sintered materials consisting of microscopic crystal particles separated by boundary elements. Fine Ceramics can be made translucent by minimizing pores and boundary elements after sintering, and by increasing crystal size in order to reduce boundary interfaces.
In addition, some varieties of Fine Ceramic crystals have semiconductive, ferrodielectric and ferromagnetic properties. These exhibit changes in fluorescence, phosphorescence, color tone and birefringence due to interactions with light and electric / magnetic fields.
The term "Fine Ceramics" is interchangeable with "advanced ceramics," "technical ceramics" and "engineered ceramics." Use varies by region and industry.
Characteristics of Fine Ceramics