| 摘要 |
A sinterable refractory composition characterised in that it comprises:… a major proportion, by weight, of unmelted baddeleyite;… a major proportion, by weight, of the unmelted baddeleyite being present in the form of particles having effective particle sizes of greater than 5 microns (0.005 mm); and… a composition thermally decomposable into an oxide of zirconium or hafnium at a temperature above 100 DEG C, but below a sintering temperature of the sinterable refractory composition, in an amount effective to improve the thermal shock resistance of an article sintered from the refractory composition is disclosed. …<??>The present invention provides advantages over the prior art particularly in terms of reduced costs and improved resistance to thermal shock. |
