Ceramic microsphere thermal barrier coating
US-2018037510-A1 · Feb 8, 2018 · US
Heat shield component and manufacturing method thereof
US12151982B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12151982-B2 |
| Application number | US-202318232174-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 9, 2023 |
| Priority date | Aug 14, 2017 |
| Publication date | Nov 26, 2024 |
| Grant date | Nov 26, 2024 |
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Abstract
Official abstract text for this publication.
A manufacturing method of a heat shield component includes a mixing step of mixing sol including a ceramic precursor with heat-expandable microspheres having an outer shell formed of thermoplastic resin and encapsulating a foaming agent so as to obtain a mixed solution, a coating step of applying the mixed solution to a substrate to obtain a coated product, and a heating step of heating the coated product to form a base body including a ceramic from the ceramic precursor, and leading the heat-expandable microspheres to foam so as to form a ceramic porous layer including closed pores in the base body. The ceramic porous layer has a porosity in a range of 40% to 70%.
First claim
Opening claim text (preview).
What is claimed is: 1. A manufacturing method of a heat shield component, the manufacturing method comprising: a mixing step of mixing sol including a ceramic precursor with heat-expandable microspheres having an outer shell formed of thermoplastic resin and encapsulating a foaming agent so as to obtain a mixed solution; a coating step of applying the mixed solution to a substrate to obtain a coated product; and a heating step of heating the coated product to form a base body including a ceramic from the ceramic precursor, and leading the heat-expandable microspheres to foam so as to form a ceramic porous layer including closed pores in the base body, the ceramic porous layer having a porosity in a range of 40% to 70%. 2. The manufacturing method of a heat shield component according to claim 1 , wherein a temperature for heating the coated product is 280° C. or lower. 3. The manufacturing method of a heat shield component according to claim 1 , wherein the heat-expandable microspheres are formed of a single layer of the outer shell. 4. The manufacturing method of a heat shield component according to claim 1 , wherein the ceramic precursor includes zirconium. 5. The manufacturing method of a heat shield component according to claim 1 , wherein the ceramic precursor includes aluminum. 6. The manufacturing method of a heat shield component according to claim 1 , wherein the foaming agent includes at least one selected from a group consisting of hydrocarbon, chlorofluorocarbon, and tetraalkylsilane. 7. The manufacturing method of a heat shield component according to claim 1 , wherein a film thickness of the outer shell of the heat-expandable microspheres before foaming is in a range of 0.1 μm to 20 μm. 8. The manufacturing method of a heat shield component according to claim 1 , wherein an average particle diameter of the heat-expandable microspheres before foaming is in a range of 1 μm to 50 μm. 9. The manufacturing method of a heat shield component according to claim 1 , wherein a content of the heat-expandable microspheres is in a range of 10% to 30% by mass with respect to 100% by mass of a total amount of the sol and the heat-expandable microspheres excluding an organic solvent.
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Classifications
Thermal or acoustic insulation · CPC title
including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides · CPC title
involving a foaming step of the burnable material · CPC title
based on aluminium nitride · CPC title
based on zirconium or hafnium oxides, zirconates, {zircon} or hafnates · CPC title
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- What does patent US12151982B2 cover?
- A manufacturing method of a heat shield component includes a mixing step of mixing sol including a ceramic precursor with heat-expandable microspheres having an outer shell formed of thermoplastic resin and encapsulating a foaming agent so as to obtain a mixed solution, a coating step of applying the mixed solution to a substrate to obtain a coated product, and a heating step of heating the coa…
- Who is the assignee on this patent?
- Nissan Motor
- What technology area does this patent fall under?
- Primary CPC classification C04B38/0074. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 26 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).