A method for coating substrates with calcium phosphate. The aim of the
method is to be able to carry out a simple coating for all materials as
well as for particles. To this end, the substrate to be coated is placed
in a calcium phosphate gel, whereupon this substrate that is coated with
the gel is dried. Afterwards, the calcium phosphate particles not
adhering to the substrate are removed. The substrate can also be placed
inside a colloidal solution of SiO.sub.2 containing a calcium phosphate,
whereupon the mixture is constantly set in motion, the solvent is
removed, and the substrate is provided with a calcium phosphate layer by
condensing the colloidal SiO.sub.2 on the surface of the substrate. The
coated substrates can, particularly when it concerns coated particles, be
used as a bone substitute material.