Metal-based thermal insulation structures
Embodiments of the disclosure include a thermal insulation structure, comprising a plurality of stacked layers that include a first layer and a second layer. The first layer includes a first surface, a second surface, disposed opposite of the first surface, and a plurality of perforations extending between the first surface and the second surface, wherein the plurality of perforations comprise a first pattern of two or more perforations that form a patterned in a first direction that is parallel to the first surface. The second layer includes a third surface, wherein the third surface is in contact with the second surface of the first layer, a fourth surface, disposed opposite of the third surface, and a plurality of perforations extending between the third surface and the fourth surface, wherein the plurality of perforations comprise a second pattern of two or more perforations that form a pattern in the first direction that is parallel to the third surface.
1 . A thermal insulation structure, comprising a plurality of stacked layers, wherein the plurality of stacked layers comprise:
a first layer comprising:
a first surface;
a second surface, disposed opposite of the first surface; and
a plurality of perforations extending between the first surface and the second surface, wherein the plurality of perforations comprise a first pattern of two or more perforations that form a pattern in a first direction that is parallel to the first surface; and
a second layer comprising:
a third surface, wherein the third surface is in direct contact with the second surface of the first layer;
a fourth surface, disposed opposite of the third surface; and
a plurality of perforations extending between the third surface and the fourth surface, wherein the plurality of perforations comprise a second pattern of two or more perforations that form a pattern in the first direction that is parallel to the third surface; wherein
the plurality of perforations in the first layer and the plurality of perforations in the second layer each comprise an open area percentage that is between 10% and 60%, wherein the open area percentage is measured by a sum of the open areas of the plurality of perforations measured at a plane that is aligned parallel to a surface of the first layer and the second layer wherein the first layer and the second layer each comprise an insulation material selected from a group consisting of zirconium and zirconium alloys, titanium-based alloys and superalloys.
2 . The thermal insulation structure of claim 1 , wherein the perforations in the first pattern are spaced a distance in the first direction from the perforations in the second pattern.
3 . The thermal insulation structure of claim 1 , wherein the perforations in the first pattern and the perforations in the second pattern each extend in a second direction that is perpendicular to the first direction, and the perforations in the first pattern are not aligned in the second direction with the perforations in the second pattern.
4 . The thermal insulation structure of claim 1 , wherein the first layer and the second layer each comprise a material that has a thermal conductivity below about 25 watts per meter-kelvin (W/m-K).
5 . The thermal insulation structure of claim 1 , wherein the perforations in the first pattern and the perforations in the second pattern each extend in a second direction that is perpendicular to the first direction, and the first layer and the second layer have a thickness in the second direction that is about 0.025 millimeters (mm) to about 10 mm.
6 . The thermal insulation structure of claim 5 , wherein the first pattern and the second pattern each comprise a circular array of perforations, the circular array further comprising:
one or more rows, wherein:
each row of the one or more rows is spaced radially from a center of the thermal insulation structure, and
each row of the one or more rows includes at least one perforation.
7 . The thermal insulation structure of claim 5 , wherein the first pattern and the second pattern each comprise a two-dimensional linear pattern.
8 . The thermal insulation structure of claim 1 , wherein at least one of the first surface, the second surface, the third surface and the fourth surface have a roughness average (Ra) of about 0.5 micrometers (μm) to about 5 μm.
9 . The thermal insulation structure of claim 1 , wherein at least one of the first surface and the fourth surface include a coating.
10 . The thermal insulation structure of claim 9 , wherein the coating comprises a ceramic material, a glass material, a metal oxide, or any combination thereof.
11 . The thermal insulation structure of claim 1 , wherein the first pattern and the second pattern comprise a vertically alternating pattern.
12 . The thermal insulation structure of claim 1 , wherein at least one of the first layer and the second layer comprise a mesh.
13 . The thermal insulation structure of claim 1 , wherein the plurality of stacked layers include a first region of one or more layers of a first material having a first compressive strength and first thermal conductivity and a second region of one or more layers of a second material having a second compressive strength and second thermal conductivity, and the first compressive strength is greater than the second compressive strength and the first thermal conductivity is less than the second thermal conductivity.
14 . The thermal insulation structure of claim 13 , wherein the first material is a superalloy and the second material is a titanium-based alloy.
15 . A thermal insulation structure, comprising a plurality of stacked layers, wherein the plurality of stacked layers comprise:
a first layer comprising:
a first surface;
a second surface, disposed opposite of the first surface; and
a plurality of perforations extending between the first surface and the second surface, wherein the plurality of perforations comprise a first pattern of two or more perforations that form a pattern in a first direction that is parallel to the first surface; and
a second layer comprising:
a third surface, wherein the third surface is in direct contact with the second surface of the first layer;
a fourth surface, disposed opposite of the third surface; and
a plurality of perforations extending between the third surface and the fourth surface, wherein the plurality of perforations comprise a second pattern of two or more perforations that form a pattern in the first direction that is parallel to the third surface: wherein
the first layer and the second layer each comprise an insulation material selected from a group consisting of zirconium and zirconium alloys, titanium-based alloys, and superalloys,
the perforations in the first pattern and the perforations in the second pattern each extend in a second direction that is perpendicular to the first direction, and the first layer and the second layer have a thickness in the second direction that is about 0.025 millimeters (mm) to about 10 mm,
the first pattern and the second pattern each comprise a circular array of perforations, the circular array further comprising:
one or more rows, wherein:
each row of the one or more rows is spaced radially from a center of the thermal insulation structure, and
each row of the one or more rows includes at least one perforation.
16 . A thermal insulation structure, comprising a plurality of stacked layers, wherein the plurality of stacked layers comprise:
a first layer comprising:
a first surface;
a second surface, disposed opposite of the first surface; and
a plurality of perforations extending between the first surface and the second surface, wherein the plurality of perforations comprise a first pattern of two or more perforations that form a pattern in a first direction that is parallel to the first surface; and
a second layer comprising:
a third surface, wherein the third surface is in direct contact with the second surface of the first layer;
a fourth surface, disposed opposite of the third surface; and
a plurality of perforations extending between the third surface and the fourth surface, wherein the plurality of perforations comprise a second pattern of two or more perforations that form a pattern in the first direction that is parallel to the third surface; wherein
the perforations in the first pattern and the perforations in the second pattern each extend in a second direction that is perpendicular to the first direction; wherein
the perforations in the first pattern are not aligned in the second direction with the perforations in the second pattern; wherein
the first layer and the second layer each comprise an insulation material selected from a group consisting of zirconium and zirconium alloys, titanium-based alloys, and superalloys.