US2009088038A1PendingUtilityA1
Multilayered boron nitride/silicon nitride fiber coatings
Est. expiryNov 18, 2025(expired)· nominal 20-yr term from priority
Inventors:Michael A. Kmetz
C03C 25/22C03C 25/00C23C 16/345C23C 16/45576C04B 35/62868Y10T442/2557C04B 35/62871C04B 2235/5252C04B 35/62897Y10T442/2549C04B 2235/5244C23C 16/45523C23C 28/42C04B 35/62894C04B 35/62863C23C 16/342Y10T442/2975Y10T442/2926Y10T442/2984C23C 28/04C04B 35/62884
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Claims
Abstract
A composite is described which has particular utility in the formation of components for gas turbine engines. The composite broadly comprises a substrate having a surface and at least one layer of a BN/Si 3 N 4 coating on the substrate surface. The coating preferably is formed by alternative layers of a BN material and a Si 3 N 4 material. The substrate may be a cloth material with fibers, such as SiC fibers, woven therein.
Claims
exact text as granted — not AI-modified1 - 15 . (canceled)
16 . A composite comprising:
a substrate having a surface; and at least one layer of a BN/Si 3 N 4 coating on said substrate surface.
17 . The composite according to claim 16 , wherein said coating comprises alternating layers of BN and Si 3 N 4 .
18 . The composite according to claim 16 , wherein said substrate is formed from a cloth material having fibers woven therein.
19 . The composite according to claim 18 , wherein said fibers are SiC fibers.Cited by (0)
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