METHOD OF PRODUCING A COATING WHICH ABSORBS LASER RADIATION AND A COMPOSITION FOR APPLYING IT Russian patent published in 2019 - IPC C23C28/00 G02B1/10 

Abstract RU 2708720 C1

FIELD: technological processes.

SUBSTANCE: invention can be used in laser processing of materials, including ceramic, particularly in forming holes and cutting. Surface is cleaned by boiling in a chromium mixture. Absorbing laser radiation is applied on the cleaned surface in the form of a suspension which is obtained by mixing alumina and acrylic varnish with one layer by centrifugation. Composition is dried in furnace with gradual increase of temperature. Absorbent substance of the said composition is represented by alumina which is ground to finely dispersed state, and the binding component is acrylic lacquer preliminarily brought to working viscosity by a solvent mixed in ratio of 1:2 volume parts.

EFFECT: improved quality of laser formation of precision holes in polished materials.

2 cl, 1 tbl

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RU 2 708 720 C1

Authors

Gudina Tatyana Linovna

Sergeev Vyacheslav Evgenevich

Dates

2019-12-11Published

2019-03-11Filed