12-07-2018 дата публикации
Номер: US20180194694A1
Принадлежит:
A coated substrate is provided that comprises: a substrate; and a barrier coating comprising a compound having the formula: LnABO, where Ln comprises scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, or mixtures thereof; A comprises Si, Ti, Ge, Sn, Ce, Hf, Zr, or a combination thereof; and B comprises Mo, W, or a combination thereof. In one embodiment, B comprises Mo. 1. A coated substrate , comprising:a substrate; and {'br': None, 'i': 'n', 'sub': 2', '8, 'LABO'}, 'a barrier coating comprising a compound having the formulawhere Ln comprises scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, or mixtures thereof;A comprises Si, Ti, Ge, Sn, Ce, Hf, Zr, or a combination thereof; andB comprises Mo, W, or a combination thereof.2. The coated substrate as in claim 1 , wherein Ln is selected from the group consisting of scandium (Sc) claim 1 , yttrium (Y) claim 1 , lanthanum (La) claim 1 , cerium (Ce) claim 1 , praseodymium (Pr) claim 1 , neodymium (Nd) claim 1 , promethium (Pm) claim 1 , samarium (Sm) claim 1 , europium (Eu) claim 1 , gadolinium (Gd) claim 1 , terbium (Tb) claim 1 , dysprosium (Dy) claim 1 , holmium (Ho) claim 1 , erbium (Er) claim 1 , thulium (Tm) claim 1 , ytterbium (Yb) claim 1 , lutetium (Lu) claim 1 , and mixtures thereof.3. The coated substrate as in claim 1 , wherein Ln comprises yttrium.4. The coated substrate as in claim 1 , wherein B comprises Mo.5. The coated substrate as in claim 4 , wherein the compound has the formula:{'br': None, 'i': 'n', 'sub': 2', 'x', '1-x', '8, 'LAMoWO,'}where 0≤x≤about 0.5.6. The coated substrate as in claim 1 , wherein B comprises W or a combination of Mo and W.7. The coated substrate as in claim 6 , wherein the compound has the formula:{'br': None, 'i': 'n', 'sub': 2', 'x ...
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