Vlaamse Instelling Voor Technologisch Onderzoek (vito)

Vlaamse Instelling Voor Technologisch Onderzoek

Vlaamse Instelling Voor Technologisch Onderzoek, Afgekort V.i.t.o., Onderneming Van Openbaar Nut Onder De Vorm Van Een N.v.

Jozef Cooymans

Steven Mullens

Jan Luyten

Ivo Thijs

Carina Smolders

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.

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Mol, Belgium

Jozef Cooymans