Electroceramic materials and glasses. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Electroceramic materials and glasses. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Electricity for beginners

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Electroceramic materials are artificial solids obtained as a result of heat treatment (firing) of the initial ceramic masses, consisting of various minerals (clay, talc, etc.) and other substances taken in a certain ratio. Various electroceramic products are obtained from ceramic masses: insulators, capacitors, etc.

In the process of high-temperature firing of these products, complex physical and chemical processes occur between the particles of the initial substances with the formation of new substances of a crystalline and glassy structure.

Electroceramic materials are divided into 3 groups: materials from which insulators are made (insulator ceramics), materials from which capacitors are made (capacitor ceramics), and ferroceramic materials with anomalously high values of dielectric constant and piezoelectric effect. The latter have been used in radio engineering.

All electroceramic materials are distinguished by high heat resistance, weather resistance, resistance to electric sparks and arcs, and have good electrical insulating properties and sufficiently high mechanical strength.

Along with electroceramic materials, many types of insulators are made of glass. Low-alkaline and alkaline glass is used for the production of insulators. Most types of high voltage insulators are made from tempered glass. Tempered glass insulators are superior in mechanical strength to porcelain insulators.

Author: Smirnova L.N.

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