METHOD AND APPARATUS FOR FORMING HOLES IN BRITTLE MATERIALS ASSISTED BY STRESS REDUCTION THROUGH HEATING

• Main Authors: BECKER, Alejandro Antonio, ABRAMOV, Anatoli Anatolyevich
• Format: Patent
• Language: English; French
• Published: 04.03.2021
• Subjects: CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; GLASS; MACHINE TOOLS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; MINERAL OR SLAG WOOL; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A method of making a brittle substrate comprising the steps of: (i)heating at least a portion of the substrate at least to the depth d to a temperature Tp that is above 500 oC, but below 1500 oC, to form a heated area of the substrate; and (ii) irradiating at least a portion of the heated area of th...