US 11,945,749 B2
High temperature sealant and methods thereof
Melinda Ann Drake, Corning, NY (US); and Robert Michael Morena, Lindley, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Appl. No. 16/612,897
Filed by Corning Incorporated, Corning, NY (US)
PCT Filed May 8, 2018, PCT No. PCT/US2018/031613
§ 371(c)(1), (2) Date Nov. 12, 2019,
PCT Pub. No. WO2018/208785, PCT Pub. Date Nov. 15, 2018.
Claims priority of provisional application 62/505,211, filed on May 12, 2017.
Prior Publication US 2020/0062637 A1, Feb. 27, 2020
Int. Cl. C04B 37/00 (2006.01); C01B 25/37 (2006.01); C03B 23/207 (2006.01); C03C 3/16 (2006.01); C03C 8/08 (2006.01); C03C 8/24 (2006.01); C04B 37/02 (2006.01)
CPC C03C 8/24 (2013.01) [C01B 25/37 (2013.01); C03B 23/207 (2013.01); C03C 3/16 (2013.01); C03C 8/08 (2013.01); C04B 37/003 (2013.01); C04B 37/023 (2013.01); C03C 2207/00 (2013.01); C04B 2237/10 (2013.01); C04B 2237/343 (2013.01); C04B 2237/365 (2013.01); C04B 2237/403 (2013.01); C04B 2237/765 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of joining and sealing two objects, comprising:
contacting a first object and a second object with a sealing composition comprising a mixture of La-phosphate glass frit and a lanthanum source;
a first heating of the contacted first object, the contacted second object, and the sealing composition at from 1200° C. to 1500° C., and holding at this temperature to densify the sealing composition for from 2 hours to 8 hours; and
a second heating of the contacted first object, the contacted second object, and the sealing composition at from 1500° C. to 1600° C., and holding at this temperature for from 2 hours to 8 hours.