04-01-2018 дата публикации
Номер: US20180002242A1
The present disclosure includes carbon-carbon composite articles having multiphase glass oxidation protection coatings for limiting thermal and/or catalytic oxidation reactions and methods for applying multiphase glass oxidation protection coatings to carbon-carbon composite articles. 1. An article comprising:a carbon-carbon composite structure; and wherein the first glass phase comprises a phosphate glass composition having a first transition temperature,', 'wherein the second glass phase comprises a second transition temperature higher than the first transition temperature, and', 'wherein the second transition temperature is at least 100° C. higher than the first transition temperature., 'a multiphase oxidation protection composition including a first glass phase and a second glass phase on an outer surface of the carbon-carbon composite structure,'}2. The article of claim 1 , wherein the second glass phase comprises a sealing glass.3. The article of wherein the first glass phase is represented by the formula a(A′O)(PO)b(GO)c(A″O):A′ is selected from: lithium, sodium, potassium, rubidium, cesium, and mixtures thereof;{'sub': 'f', 'Gis selected from: boron, silicon, sulfur, germanium, arsenic, antimony, and mixtures thereof;'}A″ is selected from: vanadium, aluminum, tin, titanium, chromium, manganese, iron, cobalt, nickel, copper, mercury, zinc, thulium, lead, zirconium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, actinium, thorium, uranium, yttrium, gallium, magnesium, calcium, strontium, barium, tin, bismuth, cadmium, and mixtures thereof;a is a number in the range from 1 to about 5;b is a number in the range from 0 to about 10;c is a number in the range from 0 to about 30;x is a number in the range from about 0.050 to about 0.500;{'sub': '1', 'yis a number in the range from about 0.040 to about 0.950;'}{'sub': '2', 'yis a number in the range from 0 to about 0.20; and'}z is ...
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