Patent · US Active

Ceramic coating for foundry core

US11752541B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignees

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR
SAFRAN · FR

Inventors

Mirna Bechelany · Courbevoie, FR
Virginie Jaquet · Moissy-Cramayel, FR
Amar SABOUNDJI · Moissy-Cramayel, FR
Mathieu SOULIER · Le Saix, FR
Mathieu Boidot · Gières, FR
Richard Laucournet · La Buisse, FR

Key dates

Filing date	Aug 7, 2019
Grant date	Sep 12, 2023
Priority date	—
Expiry date	Oct 25, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2111/00568
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for coating a refractory alloy part is provided and includes coating an area of a refractory alloy part by means of a treatment composition including a type of preceramic polymer and a solvent, and heat treating the part coated with the treatment composition. The heat treating partially converts the preceramic polymer and forms a ceramic coating obtained by conversion, the ceramic coating protecting the refractory alloy from oxidation. The treatment composition also includes active fillers to form an alloy coating on a surface of the part by solid diffusion in addition to the ceramic coating obtained by conversion, and the alloy coating generates a protective oxide layer when subjected to oxidizing conditions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.