| 摘要 |
The present invention is related to a method for manufacturing a high ductility Ti-, Ti-alloy or NiTi-foam, meaning a compression strain higher than 10%, comprising the steps of: Preparing a powder suspension of a Ti-, NiTi- or Ti-alloy powder, Bring said powder suspension into a desired form by gelcasting to form a green artefact, A calcination step wherein said green artefact is calcined, and Sintering said artefact, characterised in that said calcination step comprises a slow heating step wherein said green artefact is heated at a rate lower or equal to 20~C/hour to a temperature between 400~C and 600~C and that the Ti-, NiTi- or Ti-alloy powder has a particle size less than 100 ~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~m can be obtained with such a method. |
