Corrosion resistant and low embrittlement aluminum alloy coatings on steel by magnetron sputtering

US10577686B2 · kind B2 · utility

Assignee

• The Boeing Company · US

Inventors

• Stephen P. Gaydos · Chesterfield, US
• Vijaykumar S. Ijeri · Mumbai, IN
• Om Prakash · Kanchinakote, IN
• Suman Mishra · Bachra, IN
• Raghuvir Singh · Diemelstraße, US
• Sharma Paswan · Jamshedpur, IN
• Lokesh C. Pathak · Jamshedpur, IN

Key dates

• Filing date: Aug 16, 2017
• Grant date: Mar 3, 2020
• Expiry date: Aug 16, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12757
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present disclosure provides alloys for coating a steel substrate, the alloys comprising aluminum and one or more of zinc, magnesium, and zirconium. The alloy coatings have a percent total pore volume of about 5% or less and an average pore diameter about 10 microns or less. The present disclosure further provides methods of depositing aluminum alloy onto a substrate, magnetron sputtering targets, and methods for making coated steel.