Patent · US Active

Erosion resistant coatings and methods thereof

US7431566B2 · kind B2 · utility

9Cited by

16References

8Claims

0Family size

Assignee

General Electric Company · US

Inventors

Dennis Michael Gray · Delanson, US
Krishnamurthy Anand · Bengaluru, IN
Warren Arthur Nelson · Schenectady, US
Hans Aunemo · Oslo, NO
Alain Demers · Suncook, US
Olav Rommetveit · Sarpsborg, NO

Key dates

Filing date	Oct 12, 2006
Grant date	Oct 7, 2008
Priority date	—
Expiry date	Oct 12, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/263
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded into a cobalt chromium (CoCr) binder matrix. A high velocity air fuel thermal spray process (HVAF) is used to create thick coatings in excess of about 500 microns with high percentages of primary carbide for longer life better erosion resistant coatings. These materials and processes are especially suited for hydroelectric turbine components.

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