Ugine Sa

Joelle Pontet

Pierre De Gelis

Gerard Piet

Gerard Pacqueau

A device for low-temperature plasma surface treatment of a stationary metallic material (8) in plate or sheet form, comprising a sealed enclosure (1) into which a plasma-forming gas is introduced, and a suction device (6) for adjusting the pressure of the gas. The enclosure (1) incorporates a support (7) in contact with the material (8) and at least one fixed or movable electrode (10) having an 'active' surface (13) facing the material (8) and defining a space (12) between itself and the surface (9) of the material. The electrode (10) is held at an adjustable distance between its active surface and the surface of the material. A potential difference of given sign and given absolute value is created between the material (8) and the electrode (10), and a low-temperature plasma is generated in the space (12).

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Gueugnon, France

Joelle Pontet