Beryllium Oxide Ceramic Insulators

Comparing theoretical density values beo is 3 01g cc while al 2 o 3 is 4 00 g cc and aln is 3 26 g cc.

Beryllium oxide ceramic insulators.

Although beryllium oxide is toxic beryllium oxide ceramics are not toxic. Beryllium oxide insulators have a high dielectric strength which allows safe operating voltages of 1500 volts or more. Beryllium oxide beo also known as beryllia is an inorganic compound with the formula beo. The coefficient of thermal expansion for beo is comparable to many other oxide ceramics and many metals as well at approximately 7 5 in in c for the range from 25 c.

Beryllium oxide is used in high technology ceramics electronic heat sinks electrical insulators microwave oven components gyroscopes military vehicle armor rocket nozzles crucibles thermocouple tubing laser structural components substrates for high density electrical circuits automotive ignition systems and radar electronic. For applications involving high frequency or high pulse rate circuitry the inherent low electrical capacitance of these. This colourless solid is a notable electrical insulator with a higher thermal conductivity than any other non metal except diamond and exceeds that of most metals. Beryllium oxide versus aluminum nitride when thermal conductivity and heat dissipation are critically important considerations the differences between beryllium oxide beo also known as beryllia and aluminum nitride aln can mean the difference between long term performance and early failure.

As an amorphous solid beryllium oxide is white its high melting point leads to its use as a refractory material.