US 12,351,520 B2
High-entropy oxides for thermal barrier coating (TBC) top coats
Jianhong He, Bethpage, NY (US); Heidi Lynette Lovelock, Rhoenblick (DE); Naixie Zhou, Westbury, NY (US); Tyler Harrington, New York, NY (US); and Timothy Sharobem, Brooklyn, NY (US)
Assigned to OERLIKON METCO (US) INC., Westbury, NY (US)
Appl. No. 17/278,590
Filed by OERLIKON METCO (US) INC., Westbury, NY (US)
PCT Filed Oct. 9, 2019, PCT No. PCT/US2019/055423
§ 371(c)(1), (2) Date Mar. 22, 2021,
PCT Pub. No. WO2020/142125, PCT Pub. Date Jul. 9, 2020.
Claims priority of provisional application 62/743,392, filed on Oct. 9, 2018.
Prior Publication US 2021/0347699 A1, Nov. 11, 2021
Int. Cl. C04B 35/50 (2006.01); C04B 35/622 (2006.01); C04B 35/626 (2006.01); C04B 35/64 (2006.01)
CPC C04B 35/50 (2013.01) [C04B 35/62222 (2013.01); C04B 35/62695 (2013.01); C04B 35/64 (2013.01); C04B 2235/3208 (2013.01); C04B 2235/3224 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/3227 (2013.01); C04B 2235/3229 (2013.01); C04B 2235/3232 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/9669 (2013.01)] 35 Claims
OG exemplary drawing
 
1. A thermal barrier coating material comprising:
a high entropy oxide (HEO) having a high configurational entropy, the HEO having a formula of MxOy, where M represents a group of at least five different oxide-forming metallic cations, x represents the number of metal cations (M) or atoms, and y represents the number of oxygen anions (O) or atoms,
wherein the HEO is a single phase across an operating temperature range from room temperature to 2,000° F., and
the at least five different oxide-forming metallic cations (M) comprise:
a) at least one of the transition metals Sc, Y, Ti, Zr, V, Nb, Ta, Cr, Mo, W, Mn, Re, Fe, Ru, Co, Ni, Cu, or Zn, and/or
b) at least one of the lanthanides La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, or Lu, and,
further comprising at least five different metal oxides, which comprise the at least five different oxide-forming metallic cations (M), and which are selected from the group:
a) Y2O3 in an amount of from 5% by weight to 20% by weight,
b) ZrO2 in an amount of from 12% by weight to 55% by weight,
c) CaO in an amount of greater than 0% by weight up to 15% by weight,
d) Gd2O3 in an amount of greater than 0% by weight up to 30% by weight,
e) La2O3 in an amount of greater than 0% by weight up to 26% by weight,
f) Yb2O3 in an amount of greater than 0% by weight up to 32% by weight,
g) TiO2 in an amount of greater than 0% by weight up to 10% by weight, and
h) CeO2 in an amount of greater than 0% by weight up to 18% by weight,
wherein amount percentages of the at least five of the metal oxides add up to at least 97% by weight.