摘要:
A ceramic matrix composite (CMC) airfoil segment (82) for a gas turbine engine (20) includes a box-shape fiber geometry (98A) which defines a rectilinear pressure side bond line (100P) and a rectilinear suction side bond line (100S). A corresponding structure and method of assembling are also provided.
摘要:
An oxidation resistant structure is taught comprising a Ti alloy substrate and a uniform coating of a Cu alloy deposited on the substrate, wherein the Cu alloy comprises Cu and from 0 to 10 wt% Al and from 0 to 6 wt% Si and the percentages of Al and Si are not simultaneously zero, the structure having substantially no intermetallic compound formation and substantially no diffusion of coating constituents in the substrate.
摘要:
A high temperature die casting system (10) includes a die casting tool (12) that has dies (14,16) that are adapted for forming a component (15). The die casting tool (12) is operable to heat and maintain a temperature of the dies (14,16) above 500°F (260°C). At least a portion of the die casting tool (12) that is exposed for contact with molten die casting material has a substrate (42) and barrier coating (40) on the substrate (42) to protect from the molten die casting material.
摘要:
A die casting system (50) includes a die (52) comprising of a plurality of die components (54, 56) that define a die cavity (60) configured to receive a molten metal. One of the die components (54, 56) comprises a material that is not reactive with the molten metal and has a melting temperature above 815 degrees Celsius.
摘要:
A ceramic matrix composite (CMC) airfoil (66) for a gas turbine engine (20) includes a first multiple of CMC plies (88) which define a suction side (84), a first airfoil portion (88A) of the first multiple of CMC plies (88) at least partially parallel to an airfoil axis (B). A second multiple of CMC plies (86) define a pressure side (82), a second airfoil portion (86A) of the second multiple of CMC plies (86) at least partially parallel to the airfoil axis (B) and bonded to the first airfoil portion (88A). A corresponding method of forming is also provided.
摘要:
A coated article includes an article (30) having at least one surface and composed of a molybdenum based refractory metal alloy base substrate, a niobium based refractory metal alloy base substrate or a silicon base substrate. A bond coat layer (32) is disposed upon the surface. The bond coat layer (32) includes a molybdenum disilicide base compound and at least one of the following: silicon nitride, silicon carbide or tantalum oxide. A process for coating the article includes the steps of applying upon the article's surface the aforementioned bond coat layer (32). A functionally graded material layer (34) is applied upon the bond coat layer (32). The functionally graded material layer (34) comprises molybdenum disilicide, mullite and at least one of the following: silicon nitride, silicon carbide or tantalum oxide. A thermal barrier coating layer (36) is then applied upon the functionally graded material layer (34).
摘要:
A die casting system (50) includes a die (52) comprising of a plurality of die components (54, 56) that define a die cavity (60) configured to receive a molten metal. One of the die components (54, 56) comprises a material that is not reactive with the molten metal and has a melting temperature above 815 degrees Celsius.
摘要:
A ceramic matrix composite (CMC) airfoil segment (82) for a gas turbine engine (20) includes a box-shape fiber geometry (98A) which defines a rectilinear pressure side bond line (100P) and a rectilinear suction side bond line (100S). A corresponding structure and method of assembling are also provided.