To be considered an electrical insulator, there must be an absence of electrical conduction, with the emphasis on the word “absence.” Alumina is often the ceramic of choice as it is not only inherently non-conductive, it also possesses a high mechanical strength. However, many critical applications require much more than just these inherent material properties. They require the knowledge Ceramco engineers into all highly specialized custom ceramic parts fulfilling these needs.
Ceramics – More than a High Voltage Insulator
High voltage devices require insulators not only to contain the electric current, but also to not interfere with it. Such applications for which Ceramco manufactures custom ceramic parts include: high voltage spark arrestors and spark plug gap insulators.
One device of note produces a 300kV electrical spark. A spark so strong, it finds any defect in the insulator, leading to the corona effect, or corona discharge, or worse, a conduction path other than the one intended for the current. Recalling the word “absence” mentioned earlier, such defects negate the intended purpose of the insulator. When encountered in a high voltage application, the corona discharge can result in:
- Power loss
- Audible noise
- Electromagnetic interference
- Purple glow
- Ozone production
- Insulation damage
Ceramco’s A96 alumina is an engineered blend providing defect-free custom ceramic insulators for high voltage insulation applications. Our quality assurance system assures every batch of A96 alumina is consistent, fully documented and traceable. Ceramco’s custom ceramic insulators are tested under a vacuum for leaks. In addition, we test our custom ceramic insulators for cracks with a dye penetrant and also visually inspect them under magnification, ensuring a defect-free product.
Ceramics – More than a Medium to Low Voltage Insulator
Analyzing substances on the molecular level defines the word: “exacting.” The use of highly sensitive analytical devices such as a GC/MS (Gas Chromatograph Mass Spectrometer) requires an equally exacting Ceramco custom ceramic electrical insulator. The high purity of Ceramco’s A998 alumina makes it the ideal material for these applications.
During analysis, the substance being analyzed typically is evaporated, or ionized (electron ionization) into individual particles. Ultimately, the particles are translated into an electrical signal which is interpreted to identify the substance. This electrical signal, typically 70 eV (electron volts) cannot be interfered with in any way whatsoever. Custom ceramic insulators made of Ceramco’s high purity A998 alumina are non-conductive, gas-tight (non-outgassing) and inert, assuring non-interference with the sample and helping to assure successful analysis.
Another factor is thermal insulation. Analytical processes often operate at elevated temperatures, easily breaking down plastics. A Ceramco custom ceramic part serves double-duty, providing the necessary electrical insulation as well as a highly effective thermal barrier. Ceramco already serves numerous areas of the electronics and instrumentation market.
People Making it Happen
Ceramco’s custom ceramic insulators deliver on the promise of 0.0% electrical conduction. Keeping this promise for our customers requires 100% commitment. That is the promise all the skilled workers at Ceramco make to you. From your very first contact with Ceramco you can also be assured of 100% involvement for the long term, regardless of the size of your order.
Ready to Make it Happen for You
Do you need a quotation on your print for a custom ceramic part? Contact Ceramco. You'll be greeted by a courteous customer service specialist ready to provide immediate, personal assistance. Ceramco specializes in manufacturing custom ceramic parts with complex geometries, matching the appropriate forming process to your order's specifications and quantity: