Porous titanium coatings on dense Ti6Al4V substrates were made by electrophoretic deposition (EPD) of titanium particle stabilized Pickering emulsions. The samples were consecutively dried and microwave sintered in helium to prevent oxidation. The obtained coatings have a thickness ranging from 50 to 250 μm with open spherical macropores in the 20 to 200 μm range.
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Neirinck et al. (2008) studied this question.