Ion beam treatment method for producing superhydrophilic glass materials
AssigneeQuertech
InventorsDenis Busardo, Frédéric Guernalec
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Abstract
Process for treatment by an ion beam of a glass material where: the acceleration voltage of the ions is between 5 kV and 1000 kV; the temperature of the glass material is less than or equal to the glass transition temperature; the dose of nitrogen (N) or oxygen (O) ions per unit of surface area is chosen within a range of between 1012 ions/cm2 and 1018 ions/cm2 so as to reduce the contact angle of a drop of water below 20°; a prior pretreatment is carried out with argon (Ar), krypton (Kr) or xenon (Xe) ions in order to stengthen the durability of the superhydrophilic treatment. Superhydrophilic glass materials of long duration are thus advantageously obtained.
Claims15
A treatment process for enhancing the hydrophilic properties of a glass material, wherein it consists of an ion bombardment where:
- the ions of the ion beam are selected from the ions of the elements of the list consisting of nitrogen (N) and oxygen (O);
- - the acceleration voltage, AV, of the ions is greater than or equal to 5 kV and less than or equal to 1000 kV , in particular greater than or equal to 5 kV and less than or equal to 200 kV, indeed even greater than or equal to 10 kV and less than or equal to 100 kV;
- the temperature of the glass material is less than or equal to the glass transition temperature;
- the dose of ions per unit of surface area is located within a range of between 1012 ions/cm2 and 1018 ions/cm2, in particular of greater than or equal to 1015 ions/cm2, indeed even of greater than or equal to 1015 ions/cm2 and less than or equal to 1017 ions/cm2.
Dependencies are inferred from the claim text.