GLASS PLATE HAVING HIGH FRACTURE TOUGHNESS AND METHOD OF MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a glass plate having strength and fracture toughness improved by forming a modified phase on the surface of the glass plate.

SOLUTION: Nitrogen ion or silicon ion is implanted into the surface of the glass plate in a depth of 10 nm to 10μm from the surface in the implantation amount of 1×1012-1×1018ions/cm2. The number of layers to be ion-implanted is one or more layers. The ion-implantation is carried out at 0.05-50 μA/cm2ion current and the thickness of the ion implanted layer is changed by continuously changing the acceleration voltage in the ion-implantation.

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