Ceramic foam-reinforced Al-based micro-composites

The mechanical properties of co-continuous Si3N4/Al composites manufactured by squeeze casting

“…It should also have a higher thermal conductivity and higher fracture toughness than the ceramic matrix composite with the same volume fraction of ductile metal as the toughening phase distributed as discrete, isolated particles in the ceramic matrix [10,14]. Due to a unique combination of high stiffness of the ceramic and plastic deformation capability of the metal phase, or the presence of synergistic effects for some properties, this kind of composite is expected to acquire good properties from both the continuous ductile metal network and in the ceramic preform [13,15]. So, the co-continuous Si 3 N 4 /Al composites are emerging as materials with potential for structural applications where higher strength, specific modulus and superior wear characteristics are desirable.…”

“…It has been proposed rather recently that the fabrication of interpenetrating phase ceramic-metal composites, defined as cocontinuous ceramic-metal composites in which each phase is topologically interconnected, might yield some advantages over discontinuously composites, resulting from the interconnectivity of the phases [12,13]. The co-continuous ceramic-metal composite is expected to possess outstanding advantages such as a lower coefficient of thermal expansion, higher stiffness and higher wear resistance over the MMCs (Metal Matrix Composites) with the same volume fraction of ceramic reinforcement as the strengthening phase distributed as discrete, isolated particles in the metal ceramic matrix.…”

Impact of Carbon Foam Cell Sizes on the Microstructure and Properties of Pressure Infiltrated Magnesium Matrix Composites

“…Ceramic–metal interpenetrating network materials are a group of composite materials that have previously defined component distribution and a defined microstructure that can be obtained by different technologies. Manufacturing solutions for the sintering of ordered ceramic–metal powder mixtures include conventional [ 1 , 2 ] or SHS (self-propagating high temperature synthesis) [ 3 , 4 ] methods as well as infiltration of the porous preforms formed by sintered ceramic particles or short fibers [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ] and infiltration of open-celled foams of defined geometry and smooth walls on a microscopic scale [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. The mechanism of ceramic network formation imposes and limits foam characterization features such as cell size, geometry, wall thickness and roughness as well the fraction of open pores; this defines the maximum volume fraction of the second component in interpenetrating network composite materials.…”

In Situ Reinforcement of Ti6Al4V Matrix Composites by Polymer‐Derived‐Ceramics Phases

“…Another technique to produce 3D interpenetrating composites consists on using PPs in the form of a foam network to be infiltrated by a metal or a metal alloy. [17,18] In Yiajima et al's [9] investigations, concerning the mixing of Fe-Cr powders and PCS (polycarbosilane), the oxidation resistance of the composite was studied in comparison to the standard Fe-Cr alloy, and the weight change after heating in air at 1000°C was almost zero for the composite containing 10 wt% of polymer. In ref., [10] the use of PPs was tested for the production of functionally graded materials using Cu and Al powders as metallic matrix and polycarbosilane as PP.…”