US 11,987,877 B2
Chromium-enriched diffused aluminide coating
Mark A. Livings, East Windsor, CT (US); and Chelsea Brown, Middletown, NY (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by United Technologies Corporation, Farmington, CT (US)
Filed on Jan. 16, 2020, as Appl. No. 16/744,583.
Application 16/744,583 is a continuation of application No. 14/792,721, filed on Jul. 7, 2015, granted, now 10,584,411.
Claims priority of provisional application 62/026,143, filed on Jul. 18, 2014.
Prior Publication US 2020/0149154 A1, May 14, 2020
Int. Cl. C23C 28/02 (2006.01); B32B 15/01 (2006.01); B32B 15/04 (2006.01); B32B 15/20 (2006.01); C23C 10/02 (2006.01); C23C 10/06 (2006.01); C23C 10/08 (2006.01); C23C 10/10 (2006.01); C23C 10/14 (2006.01); C23C 10/16 (2006.01); C23C 10/18 (2006.01); C23C 10/20 (2006.01); C23C 10/24 (2006.01); C23C 10/28 (2006.01); C23C 10/30 (2006.01); C23C 10/32 (2006.01); C23C 10/34 (2006.01); C23C 10/36 (2006.01); C23C 10/38 (2006.01); C23C 10/48 (2006.01); C23C 10/52 (2006.01); C23C 10/54 (2006.01); C23C 10/56 (2006.01); C23C 10/60 (2006.01); C23C 16/00 (2006.01); C23C 16/02 (2006.01); C23C 16/06 (2006.01); C23C 16/08 (2006.01); C23C 16/10 (2006.01); C23C 16/12 (2006.01); C23C 16/46 (2006.01); C23C 16/56 (2006.01); C23C 28/00 (2006.01); C23C 30/00 (2006.01); F01D 5/18 (2006.01); F01D 5/28 (2006.01)
CPC C23C 16/06 (2013.01) [B32B 15/01 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/20 (2013.01); C23C 10/02 (2013.01); C23C 10/06 (2013.01); C23C 10/08 (2013.01); C23C 10/10 (2013.01); C23C 10/14 (2013.01); C23C 10/16 (2013.01); C23C 10/18 (2013.01); C23C 10/20 (2013.01); C23C 10/24 (2013.01); C23C 10/28 (2013.01); C23C 10/30 (2013.01); C23C 10/32 (2013.01); C23C 10/34 (2013.01); C23C 10/36 (2013.01); C23C 10/38 (2013.01); C23C 10/48 (2013.01); C23C 10/52 (2013.01); C23C 10/54 (2013.01); C23C 10/56 (2013.01); C23C 10/60 (2013.01); C23C 16/00 (2013.01); C23C 16/0272 (2013.01); C23C 16/0281 (2013.01); C23C 16/08 (2013.01); C23C 16/10 (2013.01); C23C 16/12 (2013.01); C23C 16/46 (2013.01); C23C 16/56 (2013.01); C23C 28/00 (2013.01); C23C 28/02 (2013.01); C23C 28/021 (2013.01); C23C 28/022 (2013.01); C23C 28/023 (2013.01); C23C 28/028 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); F01D 5/187 (2013.01); F01D 5/28 (2013.01); F01D 5/288 (2013.01); F05D 2230/314 (2013.01); F05D 2230/90 (2013.01); F05D 2300/121 (2013.01); F05D 2300/132 (2013.01); F05D 2300/175 (2013.01); Y10T 428/1275 (2015.01); Y10T 428/12764 (2015.01); Y10T 428/12847 (2015.01); Y10T 428/12854 (2015.01); Y10T 428/12931 (2015.01); Y10T 428/12937 (2015.01); Y10T 428/12944 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/26 (2015.01); Y10T 428/263 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01)] 10 Claims
OG exemplary drawing
 
1. An article, comprising:
a base alloy;
a corrosion-resistant coating on the base alloy, the corrosion-resistant coating containing a first region of approximately 20%-40% by weight chromium;
an aluminum diffusion zone disposed between the base alloy and the corrosion-resistant coating wherein the aluminum diffusion zone comprises less than approximately 20% chromium by weight; and
a second region immediately adjacent to the first region and extending from the first region to the aluminum diffusion zone, the second region comprising less than approximately 10% chromium by weight.