Vlaamse Instelling Voor Technologisch Onderzoek (vito)

Vlaamse Instelling Voor Technologisch Onderzoek N.v. (vito)

Vlaamse Instelling Voor Technologisch Onderzoek

Steven Mullens

Jan Luyten

Ivo Thijs

Jozef Cooymans

Kristien De Sitter

Lieven Gevers

A method for manufacturing a high ductility Ti-, Ti-alloy or NiTi-foam, meaning a compression strain higher than 10%, includes: preparing a powder suspension of a Ti-, NiTi- or Ti-alloy powder, bringing the said powder suspension into a desired form by gelcasting to form a green artifact. The method also includes a calcination step wherein the green artifact is calcined, and sintering the artifact. The calcination step includes a slow heating step wherein said green artifact is heated at a rate lower or equal to 20&#xb0; C./hour to a temperature between 400&#xb0; C. and 600&#xb0; C. and the Ti-, NiTi- or Ti-alloy powder has a particle size less than 100 &#x3bc;m. A high ductility Ti-, Ti-alloy or NiTi foam, with a compression higher than 10%, with a theoretical density less than 30%, pore size (cell size) between 50 to 1000 &#x3bc;m can be obtained with such a method.

Titanium, titanium alloy and NiTi foams with high ductility

A method of manufacturing a filled polymeric membrane includes a first step of preparing a filler suspension having a solvent for a glassy polymer and nanometer-sized particles. The nanometer-sized particles in the filler suspension are aggregated in aggregates having an average aggregate size in the range between 50 nm and smaller than 200 nm. In a following step, the glassy polymer is added to the filler suspension to obtain a polymer suspension. Next, the glassy polymer is dissolved in the polymer suspension. In a next step, the polymer suspension is cast on a substrate, followed by a step of removing the solvent. A filled polymeric membrane includes aggregates of nanometer-sized filler particles. The membrane is used in pervaporation and nanofiltration.

Filled polymeric membranes, use and method of manufacturing

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Zichem, Belgium

Steven Mullens