Agence Nationale De Valorisation De La Recherche (Anvar)

Societe Europeene De Propulsion

Georges Constant

Roland Morancho

Bernard Buttazzoni

Etienne Diloy

Albert Lebugle

Philippe Pouvreau

Aref Zaouk

Raymond Haran

Josette Ghommidh

The present invention relates to a process for making bioactive coatings on osseous prostheses, wherein, from solutions, a mist of particles containing calcium ions and orthophosphate ions is made and said mist is brought into contact with an implant made of inert material under such operational conditions that at least one desired calcium phosphate is formed by reaction on the hot surface of said inert implant, and to the osseous implants obtained by this process.

Process for making bioactive coatings on osseous prostheses, and

A process for depositing a layer of a semiconductor composition comprising elements M(III) and M'(V) selected from group III and group V elements, respectively onto a substrate. The process comprises: contacting the substrate with a coordination compound in the gaseous phase, the compound having the formula: ##STR1## wherein M(III) and M'(V) are bonded to one another by a donor/acceptor bond and wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 are chemical radicals other than hydrogen with at least one of the radicals R.sub.1, R.sub.2, and R.sub.3 being an electron donor serving to stabilize the donor/acceptor bond between elements M(III) and M'(V). The process further comprises decomposing the coordination compound so as to break the chemical bonds between the radicals and the elements M(III) and M'(V) without breaking the donor/acceptor bond, so as to cause the semi-conductor composition to deposit onto the substrate. Substrates having a semi-conductor layer comprising elements selected from groups III and V deposited by the process of the invention are also disclosed.

Process for depositing a III-V semi-conductor layer on a substrate

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Ramonville Saint Agne, France

Georges Constant