Hot strength corrosion-resistant cemented refractory boride materials and their production

Claim 1

A HARD, SUBSTANTIALLY HOMOGENEOUS SOLID MATERIAL CONSISTING ESSENTIALLY OF CEMENTED PARTICLES OF A MAJOR INGREDIENT AND OF AN ADDITION INGREDIENT MIXED THEREWITH AND COMPACTED UNDER PRESSURE AND HEATED AT AN ELEVATED TEMPERATURE BETWEEN ABOUT 1200*C. AND 2500* C. AT WHICH A LIQUID PHASE IS FORMED OF THE SUBSTANCE OF AT LEAST SAID ADDITION INGREDIENT, SAID MAJOR INGREDIENT CONSTITUTING 97% TO 65% OF SAID MATERIAL AND CONSISTING ESSENTIALLY OF AT LEAST ONE BORIDE OF AT LEAST ONE METAL OF THE CLASS CONSISTING OF ZIRCONIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, MOLYBDENUM AND TUNGSTEN, SAID ADDITION INGREDIENT CONSTITUTING 3 TO 35% OF SAID MATERIAL AND CONSISTING ESSENTIALLY OF AT LESS REFRACTORY BORIDE OF THE CLASS CONSISTING OF COBALT BORIDE, TITANIUM BORIDE, NICKEL BORIDE AND IRON BORIDE, SAID MATERIAL CONSTITUTING A SYSTEM COMBINING THE CHEMICAL ELEMETS OUT OF WHICH SAID INGREDIENTS ARE CONSTITUTED IN PROPORTIONS IN WHICH THEY ARE PRESENT IN SAID INGREDIENTS.