摘要:
A process for forming a ceramic matrix composite component, for example, a turbine component, includes (a) applying a fiber coating to a fiber tow by chemical vapor deposition; (b) pulling the fiber tow through an aqueous slurry composed of high and low temperature binders, silicon carbide powder, carbon black and water to thereby form a prepreg tape; and (c) winding the prepreg tape on a drum.
摘要:
A method of forming a ceramic matrix composite (CMC) includes the steps of (a) providing a woven or braided cloth reinforced with fibers; (b) coating the fibers with a ceramics material; (c) immersing the preform into a colloidal suspension of carbon black in water; (d) removing the preform from the suspension, placing the preform in a vacuum chamber and evacuating the chamber until the slurry begins to boil or foam; and (e) releasing the vacuum and withdrawing the preform.
摘要:
A system for reinforcing a substrate includes a rotary device, a first guide connected to the rotary device, and a form positioned against the first guide. A reinforcement is supplied to wind around the form and against the first guide. A method for reinforcing a substrate includes connecting a first guide to a rotary device and positioning a form on a first side of the first guide. The method further includes winding a reinforcement around the form and against the first side of the first guide.
摘要:
A method of infiltrating a porous fiber preform with ceramic particulates includes (a) flowing a slurry having a first predetermined percent solids by weight of ceramic particulates through the porous fiber preform; (b) increasing the percent solids by weight of ceramic particulates in said slurry to a second predetermined percent and otherwise repeating step (a); and (c) increasing the percent solids by weight of ceramic particulates in the slurry to a third predetermined percent solids by weight of ceramic particulates and otherwise repeating step (a).