Patent ID: 11969796
Assignee: THE BOEING COMPANY
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C  Y | IPC B

Claim 16:
17. A graded multilayered composite comprising:
a sintered metal matrix material having a first edge on a first side of the sintered metal matrix material and a second edge on a second side of the sintered metal matrix material opposite the first side, the sintered metal matrix material having a sintered metal matrix throughout the sintered metal matrix material from the first edge to the second edge;
a first layer of hollow microspheres dispersed on the first side of the metal matrix material, each hollow microsphere having a void therein defining a void volume; and
a second layer of hollow microspheres dispersed on the second side of the metal matrix material, each hollow microsphere having a void therein defining a void volume; and
one or more cooling channels in the sintered metal matrix material between the first edge and the second edge,
wherein a total void volume fraction of the second layer is less than a total void volume fraction of the first layer.