Patent · US Active

Slip and process for producing an oxidation- and corrosion-resistant diffusion layer

US10316198B2 · kind B2 · utility

0Cited by

13References

20Claims

0Family size

Assignee

MTU Aero Engines AG · DE

Inventors

Natividad Lopez Lavernia · Munich, DE
Michael Hillen · Olching, DE
Horst Pillhoefer · Weingarten, DE
Anja Kliewe · Fürstenfeldbruck, DE

Key dates

Filing date	Oct 19, 2015
Grant date	Jun 11, 2019
Priority date	—
Expiry date	Jul 8, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C10/26
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for producing a diffusion layer for protecting temperature-stressed components, in particular of turbomachines, against oxidation and corrosion. The process comprises application of at least one slip to a component surface on which the diffusion layer is to be produced, and drying and/or hardening of the at least one slip by a heat treatment at a first temperature and diffusion heat treatment at a second temperature. The slip comprises Al-containing powder, Si-containing powder and a binder and also a Cr-containing powder which does not comprise any hexavalent chromium. In addition, the invention provides a corresponding slip.

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