Loading patent…
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsFabien Pilon, Philippe Belleville, Sébastien Lambert, Olivier Rondeau, Sandrine Thomas
Estimating the term…
The present invention relates to a method for treating a surface of an object which comprises the steps consisting of bringing the surface to be treated in contact with a diffusion intermediate and then maintaining said surface to be treated in contact with said diffusion intermediate without any movement relatively to each other, said diffusion intermediate being impregnated with a corrosive solution prior to contacting or during said contacting. The present invention also relates to a device implemented during such a method.
A method for treating a surface of an object, comprising
A device comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
Surface treatment of glass, not in the form of fibres or filaments, by etching: for making a smooth surface
Other surface treatment of glass not in the form of fibres or filaments: cleaning of glass
Etching, surface-brightening or pickling compositions: containing an alkali metal hydroxide
Etching, surface-brightening or pickling compositions: containing an inorganic acid
Term end not estimated
The present invention relates to the field of treatment of surfaces and more particularly, the field for treating surfaces using corrosive solutions.
Indeed, the present invention proposes a method and a device for corrosive treatment of surfaces such as glassy, ceramic or metal surfaces, said method and said device implementing a diffusion intermediate for applying the corrosive solution on the surface, without any relative movement of the surface to be treated relatively to the diffusion intermediate, once the 1st has been brought into contact with the 2nd.
The lifetime in the ultraviolet of optics in silica glass used in large installations using strong power lasers such as the megajoule laser (MJL) has been the subject of many studies. From these studies, it is now clearly established that the lifetime of optics in silica glass at 351 nm depends on the surface damages and their growth.
The single FIGURE is a schematization as seen from the side of a device according to the present invention.
In each example, the device, the principle of which is described in the single FIGURE, is used.
An optical silica part of 400 cm×400 cm×1 cm is put into contact with a mixture of nitric acid (80%) and of hydrofluoric acid (20%) via a fabric.
A metal plate of 400 cm×400 cm×1 cm is put into contact with concentrated hydrochloric acid, via a fabric.