Commissariat a L'energie Atomique

Institut De Recherches De La Siderurgie Francaise (irsid)

Janine Lenoir

Alain Y Roche

Charles Eyraud

Gerard Duperray

Eric Sahakian

Maurice Romand

Gerard Lecayon

Jean-Claude Charbonnier

This process for treating surfaces of products dip-coated in a bath of molten zinc and aluminum, and intended to be phosphated, involves pickling, preceding the phosphating, with a highly alkaline solution of high pH and containing zinc in solution. The process applies chiefly to products whose coating contains a high proportion of aluminum, particularly in the case of galvanized sheet metal, which it makes easier to phosphate. It is used for painted sheet metal for motor vehicles.

Process for the chemical surface treatment of an aluminous product with

The energy converter utilizes the products of radiolysis of an aqueous solution of an oxidation-reduction pair and comprises a leak-tight jacket initially filled with a pure gas which is identical with the gas evolved as a result of radiolysis. A porous electrode impregnated with the aqueous solution of the oxidation-reduction pair and specific to the reaction of this latter is placed within the jacket. The converter also comprises a gas electrode which is specific to the gas evolved as a result of radiolysis, a porous diaphragm for effecting the ionic junction between the two electrodes by gas/liquid surface conductivity and means for connecting the electrodes to an external circuit.

Radioelectrochemical energy converter

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Chaponost, France

Janine Lenoir