Varistors are special electronic components
like resistors used for protection, operation or current control.
Such components are critical elements in mobile phones, in computers
and in the power industry in general.
This project was aimed at improving the quality
and reliability of varistor discs. It involved the development of
high-homogeneity doped ZnO ceramic powders used in varistor production.
New preparation methods were developed using wet chemistry routes.
Some new software was also produced.
The result is a high performance varistor body
capable of absorbing two to three times more energy as compared
to present materials. The manufacturing process was optimised resulting
in the use of less material, increasing yield and reducing energy
There is a world-wide market for varistor
powders, with opportunities for European producers in Japan and
especially in the United States. Partners see further applications
for their highly competitive products in areas such as the food