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Ceramic armor and other structures manufactured using ceramic nano-pastes
A method of making a ceramic matrix composite (CMC) part such as armor, in which a mixture, including a preceramic polymer, particles such as ceramic microparticles and/or nanoparticles, and organic compounds such as a surfactant and a solvent, are mixed to form a paste and printed or molded. The part is then cured and densified by polymer infiltration and pyrolysis (PIP) using the preceramic polymer with a varying amount and size of ceramic particles and different temperatures in some of the cycles. The CMC can contain silicon carbide, boron carbide, boron suboxide, alumina, or any other ceramic. The process is compatible with sacrificial materials, enabling the creation of parts with hollow portions or overhangs. The mixture preferably has a high loading of particles, for example between 70 wt % and 90 wt % of the mixture, in order to minimize shrinkage. Curing and pyrolyzing the part can be performed by microwaving. Two such CMC parts can be joined together by using the paste, having the same or a different concentration of particles, as an adhesive.
Ceramic armor and other structures manufactured using ceramic nano-pastes
A method of making a ceramic matrix composite (CMC) part such as armor, in which a mixture, including a preceramic polymer, particles such as ceramic microparticles and/or nanoparticles, and organic compounds such as a surfactant and a solvent, are mixed to form a paste and printed or molded. The part is then cured and densified by polymer infiltration and pyrolysis (PIP) using the preceramic polymer with a varying amount and size of ceramic particles and different temperatures in some of the cycles. The CMC can contain silicon carbide, boron carbide, boron suboxide, alumina, or any other ceramic. The process is compatible with sacrificial materials, enabling the creation of parts with hollow portions or overhangs. The mixture preferably has a high loading of particles, for example between 70 wt % and 90 wt % of the mixture, in order to minimize shrinkage. Curing and pyrolyzing the part can be performed by microwaving. Two such CMC parts can be joined together by using the paste, having the same or a different concentration of particles, as an adhesive.
Ceramic armor and other structures manufactured using ceramic nano-pastes
GOODMAN WILLIAM A (author) / GHASEMI-NEJHAD MOHAMMAD NAGHI (author) / MINEI BRENDEN MASAO (author)
2022-03-15
Patent
Electronic Resource
English
| British Library Online Contents | 2007
CERAMIC BASED ARMOR AND PROCESS FOR PRODUCING SAID ARMOR
| European Patent Office | 2018