Method for manufacturing a porous abradable coating made of ceramic material
US12065387B2 · kind B2 · utility
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Key dates
| Filing date | Oct 9, 2019 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Jun 16, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/606
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for manufacturing a porous abradable coating includes: filling a mold with hollow glass or thermosetting polymer beads and a slurry; and sintering heat treatment to obtain a ceramic layer with pores. A maximum sintering temperature of the green body of the ceramic part is either higher than the melting temperature of the hollow glass beads so that at the end of the sintering heat treatment the hollow glass beads are melted, or higher than the decomposition temperature of the hollow thermosetting polymer beads so that at the end of the sintering heat treatment the hollow thermosetting polymer beads are decomposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.