Porous Titanium by Electro-chemical Dissolution of Steel Space-holders

Titanium powders are densified together with steel spheres, wires or wire meshes which are subsequently removed by electrochemical dissolution, creating porosity that replicates the steel space‐holders. Interdiffusion between steel and titanium is prevented by formation of a TiC diffusion barrier. Without this barrier, a Fe‐containing titanium zone adjacent to the space‐holder is formed which can be removed electrochemically, thus increasing the size and volume fraction of the pores.