Preparation of refractory materials.

摘要

A process for preparing a refractory material comprises subjecting a blank of a precursor composition to pyrolysis under isostatic pressure conditions in the absence of a separate hermetically sealed envelope enveloping the blank, the precursor composition comprising a thermoformable carbon precursor component is described. Also disclosed are processes for preparing refractory materials from thermoformable carbon precursors; the use of selected precursors for preparing refractory materials; and refractory materials obtainable by the processes of the invention.