Composition and method for producing ceramic powders of composite boron carbide and titanium diboride using a boron carbide substrate.

摘要

POWDER CERAMIC COMPOSITE CARBIDE B diboride IT OCCURRED MIXING CARBIDE BY SOURCE OF IT AS THE AVERAGE SIZE OF PARTICLE reactant is less than 20 microns and substantially all of reaction DISCRETAS are less than micrometres, followed by heating MIXTURE, SO THE carbide particles B FORMAN SUBSTRATES TOGETHER TO pARTICLE IT diboride. RESULTING DUST HAS BY carbide particles IT diboride under 20 micrometres in diameter. DUST MAY BE densified THEN TO FORM A PART IN WHICH IT diboride BEANS HAVE AN AVERAGE SIZE OF 20 micrometres MENOD AND BEANS VARBURO OF B have a size of 50 microns. BECAUSE OF UNIFORM INITIAL Dispersion, the densified part shows a microstructure which is also UNIFORM IN DISTRIBUTION OF CARBIDE BY IT diboride.