Transparent Ceramics Review

Sapphire to remain popular in electrical and electronic applications.

Transparent ceramics review. This review was aimed to summarize the latest progress in processing materials and applications of transparent ceramics. Transparent γ alon spinel ceramic has been considered as an important optical material due to its high strength and hardness highly resistant to rain and sand damage and excellent optical properties comparative to single crystal sapphire well known as the strongest and hardest transparent ceramics the transmission range of alon extends from 0 2 μm in the uv through the. Such devices have found widespread use for various applications in the electro optical field including. 1 2 pp.

Transparent ceramics present significant advantages in terms of practicality exceptional hardness resistance to heat functionality and economics in diverse fields such as optics electronics laser technology and communication. The transparent ceramic systems which are explored currently include transparent alumina as polycrystalline submicron alumina and single crystal sapphire al 2 o 3 aluminium oxynitride alon spinel mgal 2 o 4 and zinc sulphide zns ceramics. Optical fibers for guided lightwave transmission optical switches. These transparent ceramics have a polycrystalline structure with a transmittance rate that has been measured in the visible light to middle infrared spectrum at approximately 84 for yag and 81 for y 2 o 3 which is equivalent to the transparency ratios calculated according to the materials refractive index.

I powder preparation ii green body formation and iii sintering. Belyakov a and a. The fabrication particularities of optically transparent ceramic materials for different applications are examined. 14 20 january february 1995.

Ceramic processing involves three main steps. This review summarizes the status of the development of these ceramics and a case study on. The technologies used for compacting and sintering transparent ceramics are described. Sukhozhak translated from steklo i keramika nos.

These steps are critical to transparent ceramics with high optical properties. It is arranged by starting with a brief introduction followed by a detailed description on various sintering technologies used to develop transparent ceramics. Cold pressing followed by sintering in different media hot pressing hot isostatic pressing spark plasma sintering and slip casting. Production of transparent ceramics review a.