Commonwealth Scientific and Industrial Research Organisation

Shiqin Yan

Daniel Liang

Trevor Brown

David Alan Devenish

Leigh Gesthuizen

Kun Yang

Kwesi Kurentsir Sagoe-Crentsil

Genrietta Shapiro

Andrew Yob

A method for friction stir forming a metal matrix composite (MMC) structure (). The method includes the step of providing a substrate () comprising a metallic material and securing a preformed MMC layer () comprising an MMC material in a position overlying at least a portion of the substrate (). The method further includes the step of friction stirring the preformed MMC layer () with a friction stirring tool () which includes a rotating probe (), including locating the probe () at a stirring depth at which the probe () extends through the preformed MMC layer () into a portion of the substrate () and passing the tool () through the preformed MMC layer () at the stirring depth to friction stir the preformed MMC layer () and integrate the preformed MMC layer () with the substrate ().

Method for forming a metal matrix composite structure

A method for manufacturing a cellular geopolymer product, which method comprises the steps: (a) forming an activated geopolymer premix by addition to a geopolymer premix of an activator compound that initiates a condensation reaction in the geopolymer premix; (b) casting the activated geopolymer premix in a desired configuration; and (c) generating gas bubbles in the activated geopolymer premix as the condensation reaction proceeds and the activated geopolymer premix stiffens to produce a self-supporting cellular structure; and (d) curing the self-supporting cellular structure to produce the cellular geopolymer product, wherein in step (c) the characteristics of the activated geopolymer premix and the reaction kinetics of the condensation reaction are controlled to achieve formation of the self-supporting cellular structure.

Cellular geopolymer product

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Mulgrave, Australia

Shiqin Yan