US 11,655,544 B2
PVD barrier coating for superalloy substrates
Jürgen Ramm, Maienfeld (CH); Beno Widrig, Bad Ragaz (CH); and Malko Gindrat, Chur (CH)
Assigned to Oerlikon Surface Solutions AG, Pfäffikon, Pfäffikon (CH)
Appl. No. 17/284,635
Filed by Oerlikon Surface Solutions AG, Pfäffikon (CH)
PCT Filed Oct. 16, 2019, PCT No. PCT/EP2019/078091
§ 371(c)(1), (2) Date Apr. 12, 2021,
PCT Pub. No. WO2020/079084, PCT Pub. Date Apr. 23, 2020.
Claims priority of provisional application 62/746,732, filed on Oct. 17, 2018.
Prior Publication US 2021/0395897 A1, Dec. 23, 2021
Int. Cl. C22C 19/05 (2006.01); C22C 19/07 (2006.01); C23C 28/00 (2006.01); C23C 14/08 (2006.01); C23C 14/16 (2006.01); C23C 14/32 (2006.01); F01D 5/28 (2006.01)
CPC C23C 28/3455 (2013.01) [C22C 19/056 (2013.01); C22C 19/07 (2013.01); C23C 14/081 (2013.01); C23C 14/16 (2013.01); C23C 14/325 (2013.01); C23C 28/321 (2013.01); F01D 5/288 (2013.01); Y10T 428/12458 (2015.01); Y10T 428/12639 (2015.01)] 8 Claims
OG exemplary drawing
 
1. A multilayered structure comprising:
a. a metallic substrate; and
b. a multilayer coating disposed on the metallic substrate comprising:
i. a discrete first layer disposed on the metallic substrate, the discrete first layer comprising a Ni-, Co-, Ni—Co-, or Ni-aluminide based material;
ii. a discrete second layer disposed on the discrete first layer, the discrete second layer comprising Al, Cr, O, and further comprising a Ni-, Co-, Ni—Co, or Ni-aluminide based material; and
iii. a discrete third layer disposed on the discrete second layer, the discrete third layer comprising Al, Cr, and O.