Procedure for the production of ceramic ferroelectric materials. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for the production of ferroelectric ceramic materials, of the type consisting of a ternary solid solution having the general formula Pb (Mg1/3Nb2/3) xTiyZrzO3, X, Y and Z representing the molar ratios of the components, characterized by comprising the steps de: intimately mix with distilled water the starting materials including PbO or Pb3O4 or MgCO3, Nb205 or Nb (OH) 5-, TiO2 and ZrO2, preferably together with at least one additive chosen from the group including MnO2, CoO, NiO, Fe2O3 and Cr2O3; dry the mixture; mold it under high pressure into specific shapes; calcining these forms and pulverizing them wet; drying the powder thus obtained; mold it under high pressure and in the desired shapes; polish and coat two opposing surface areas of these shapes with silver paint; cook them to form electrodes therein and finally polarize them by means of a direct voltage applied to said electrodes. (Machine-translation by Google Translate, not legally binding)