Sealing process for an anodized aluminum-alloy surface

US12134829B2 · kind B2 · utility

Assignee

• RTX CORPORATION · US

Inventors

• Bart Antonie van Hassel · Getzville, US
• Georgios S. Zafiris · Glastonbury, US
• Zhongfen Ding · South Windsor, US
• Michael A. Kryzman · Town of West Hartford, US
• Mark R. Jaworowski · Sarasota, US
• Weina Li · South Glastonbury, US
• Blair A. Smith · South Windsor, US
• Weilong Zhang · Glastonbury, US
• Promila Bhaatia · Farmington, US

Key dates

• Filing date: Oct 29, 2019
• Grant date: Nov 5, 2024
• Expiry date: Mar 4, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C2222/10
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A sealing process includes applying a first reactant to a substrate having a porous structure, the first reactant comprising a chromium (III) precursor and a transition metal precursor and applying a second reactant to the first reactant, the second reactant comprising a rare earth element precursor and an alkaline earth element precursor to form reservoirs of trivalent chromium in pore space of the porous structure, and a physical barrier over the substrate and the reservoirs.