abstract |
COMPOSITES COMPRISING FIBROUS ZIRCONIA IN A MATRIX OF ZIRCONIA ARE PREPARED BY SUBJECTING FIBROUS ZIRCONIA IMPREGNATED WITH A MIZTURE OF A LIQUID CONTAINING A ZIRCONIUM COMPOUND AND A REFRACTORY POWDER TO A TEMPERATURE SUFFICIENT TO INSURE CONVERSION OF SUBSTANTIALLY ALL OF THE ZIRCONIUM COMPOUND TO ZIRCONIA. THE COMPOSITES ARE USEFUL AS HEAT SHIELDS, IINSULATION AND THE LIKE. |