Patent · US Active

Method for producing a ceramic layer on a surface formed from an Ni base alloy

US9920414B2 · kind B2 · utility

0Cited by

8References

13Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Karl Thomas Fehr · Munich, DE
Yaping Ye · Zhejiang, CN
Gerhard Wolf · Mannheim, DE

Key dates

Filing date	Jan 14, 2013
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Jan 28, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/249987
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method for producing a ceramic layer on a surface formed from a Ni base alloy, includes the following steps: producing on the surface a ceramic layer containing ZrO2 as a main constituent; producing a gas phase having a temperature in the range from 400 to 900° C., in which a vapor formed from a salt melt with the components alkali chloride, alkali sulphate and ZnCl2 is contained in a carrier gas formed from an inert gas with an addition from 0.5 to 10% by weight HCl; and bringing the ceramic layer into contact with the gas phase for a period of time that is sufficient for an intermediate layer having a thickness of at least 0.1 μm to form between the ceramic layer and the surface.

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