Ultrasonic-assisted variable-speed loading extrusion infiltration method for preparing ceramic metal bicontinuous gradient composite material

• Main Authors: CHEN GANG, CHEN QIANG, QI YUSHI, WEI FANGMING
• Format: Patent
• Language: Chinese; English
• Published: 26.07.2024
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

The invention relates to the field of ceramic metal composite material preparation, in particular to an ultrasonic-assisted variable-speed loading extrusion infiltration method for preparing a ceramic metal bicontinuous gradient composite material, which comprises the following steps: preparing a porous ceramic preform; carrying out melting treatment on the pre-impregnated alloy to obtain a molten alloy; preheating an ultrasonic vibration-variable speed loading mold, preheating the ceramic preform, and putting the porous ceramic preform into the ultrasonic vibration-variable speed loading mold; the molten alloy is poured into an ultrasonic vibration-variable speed loading mold; applying ultrasonic vibration to the bottom of the ultrasonic vibration-variable speed loading mold; pressure is applied to a punch of the ultrasonic vibration-variable speed loading mold, and variable speed loading is implemented; and after infiltration is completed, taking out and cooling to room temperature to obtain the ceramic met