US 11,255,641 B2Granted

Compositionally-graded metal-ceramic structure and method for manufacturing the same

AssigneeThe Boeing Company

InventorsBruno Zamorano Senderos, Dennis Lynn Coad, James Ross Dobbs, Ali Yousefiani

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Abstract

A compositionally-graded structure including a body having a first major surface and a second major surface opposed from the first major surface along a thickness axis, the body including a metallic component and a ceramic component, wherein a concentration of the ceramic component in the body is a function of location within the body along the thickness axis, wherein transitions of the concentration of the ceramic component in the body are continuous such that distinct interfaces are not macroscopically established within the body, and wherein the concentration of the ceramic component is at least 95 percent by volume at at least one location within the body along the thickness axis.

Claims20

Dependent claims

A method for manufacturing a compositionally-graded structure comprising:

assembling a powder layup comprising at least a first powdered material and a second powdered material, said first powdered material comprising a ceramic component and said second powdered material comprising a metallic component, said powder layup comprising:
a first layer comprising a first concentration of said ceramic component, said first concentration of said ceramic component being at least 80 percent by weight;
a second layer comprising a second concentration of said ceramic component and a first concentration of said metallic component;
and
a third layer comprising a third concentration of said ceramic component and a second concentration of said metallic component, said second concentration of said metallic component being at least 60 percent by weight;
pressing said powder layup to yield a compact;
heat treating said compact;
and
providing an anti-spalling layer adjacent to said compositionally-graded structure, wherein the anti-spalling layer comprises at least one of a polymer and a fiber.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/892,366Filed 4 Jun 2020 · division
Priority: 5 Sep 2017
Published: US 2020/0326160 A115 Oct 2020
Granted: 22 Feb 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

F41H 5/0421
Layered armour containing ceramic material: ceramic layers in combination with metal layers
C22C 29/10
Based on carbides, but not containing other metal compounds: based on titanium carbide
C22C 29/14
Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides: based on…
B22F 3/15
Simultaneously: hot isostatic pressing