| abstract |
PROCESS USING RELATIVELY LOW-HIGH PRESSURES. IT CONSISTS OF PLACING IN A CUP 13 A MASS OF SOLID EUTECTIFIER ALLOY, RICH IN SILICON 12, A MASS OF DIAMOND CRYSTALS 13 AND A SUBSTRATE OF CARBIDE OR SILICON NITRIDE 14; TO DISPOSE OF THE ASSEMBLY IN A PRESSURE TRANSMISSION POWDER MEDIUM; A COLD PRESSING OF THE ASSEMBLY TO OBTAIN A SYSTEM STABILIZED IN DIMENSION, A HOT PRESSING THE SYSTEM STABILIZED IN DIMENSION TO ENSURE THE SILICON-RICH ALLOY INTO THE DIAMOND GROUND AND AT THE INTERFACE BETWEEN THE DIAMOND MASS AND THE SUBSTRATE, TO MAINTAIN SUFFICIENT PRESSURE DURING COOLING TO KEEP SIZE STABILITY AND RECOVER THE COMPOSITE FORM. APPLICATION TO THE MANUFACTURING OF CUTTING TOOLS. |