	US 12,134,829 B2
	Sealing process for an anodized aluminum-alloy surface
Bart Antonie van Hassel, Weatogue, CT (US); Georgios S. Zafiris, Glastonbury, CT (US); Zhongfen Ding, South Windsor, CT (US); Michael A. Kryzman, West Hartford, CT (US); Mark R. Jaworowski, Glastonbury, CT (US); Weina Li, South Glastonbury, CT (US); Blair A. Smith, South Windsor, CT (US); Weilong Zhang, Glastonbury, CT (US); and Promila Bhaatia, Farmington, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on Oct. 29, 2019, as Appl. No. 16/666,693.
Application 16/666,693 is a division of application No. 15/593,873, filed on May 12, 2017, granted, now 10,480,093.
Prior Publication US 2020/0063284 A1, Feb. 27, 2020
Int. Cl. C23C 22/73 (2006.01); B32B 15/04 (2006.01); B32B 15/20 (2006.01); C23C 22/83 (2006.01); C23C 28/04 (2006.01); C25D 11/24 (2006.01)

CPC C25D 11/246 (2013.01) [B32B 15/04 (2013.01); B32B 15/20 (2013.01); C23C 22/73 (2013.01); C23C 22/83 (2013.01); C23C 28/048 (2013.01); B32B 2311/24 (2013.01); C23C 2222/10 (2013.01)]

13 Claims

1. A substrate, comprising:

an anodized layer disposed on the substrate; where the anodized layer has a porous structure that comprises pores filled with a trivalent chromium corrosion inhibitor; and

a physical barrier disposed over the anodized layer that seals the trivalent chromium corrosion inhibitor within the pores; wherein the physical barrier comprises a crystalline structure with chromium, a transition metal element, a rare earth element and an alkaline earth element; and where the transition metal element is derived from Ti(OC₃H₇)₄.