FIELD: chemistry.
SUBSTANCE: invention relates to chemically stable materials, particularly used for lining reaction vessels, reactors, mills, die moulds etc, which are used in making anodes of electrolytic capacitors with solid electrolyte. Described is a sintered body which contains from 30 to 100 mol % NbOx, where 0.5<x<1.5, and up to 70 mol % MgO, characterised by porosity of less than 30 vol. %. The sintered body preferably consists of microstructures which include homogeneous regions rich in niobium superoxide or magnesium oxide with maximum size of 1.5 mcm and preferable maximum size of 1.0 mcm.
EFFECT: improved mechanical properties and chemical stability of the material.
8 cl, 1 ex
