US 12,391,603 B2
Dense glass-ceramic articles via additive manufacture of glass frit
Bairu Chen, Shicheng (CN); and Marie Jacqueline Monique Comte, Fontenay aux Roses (FR)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Feb. 25, 2022, as Appl. No. 17/680,537.
Prior Publication US 2022/0274867 A1, Sep. 1, 2022
Int. Cl. C03B 19/01 (2006.01); B33Y 10/00 (2015.01); B33Y 40/10 (2020.01); B33Y 40/20 (2020.01); B33Y 70/00 (2020.01); C03B 32/02 (2006.01); C03C 1/02 (2006.01); C03C 8/02 (2006.01); C03C 8/14 (2006.01); C03C 10/00 (2006.01)
CPC C03C 8/02 (2013.01) [B33Y 10/00 (2014.12); B33Y 40/10 (2020.01); B33Y 40/20 (2020.01); B33Y 70/00 (2014.12); C03B 19/01 (2013.01); C03B 32/02 (2013.01); C03C 1/026 (2013.01); C03C 8/14 (2013.01); C03C 10/00 (2013.01); C03C 2204/00 (2013.01); C03C 2205/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An additive manufacturing process, comprising:
building a 3D structure from a printing material, the printing material comprising a binder composition and a glass frit comprising at least 50 wt. % SiO2, at least 30 wt. % CaO, and at least 10 wt. % ZrO2, the building comprising:
printing a layer of the printing material on a substrate to form a cross-section of the 3D structure;
curing selected portions of the layer of printing material to form printed regions, the cross-section further including unprinted regions comprising uncured portions of the layer of printing material; and
repeatedly printing a subsequent layers of the printing material to form a plurality of cross-sections of the 3D structure, each cross section of the plurality of cross-sections comprising printed regions and unprinted regions, each cross-section of the plurality of cross-sections being formed on a previously formed one of the plurality of cross-sections;
cleaning the 3D structure to remove uncured resin from the 3D structure;
debinding the 3D structure to form a porous 3D structure;
sintering the porous 3D structure to form a sintered 3D structure; and
forming a glass-ceramic article from the sintered 3D structure.